ATEUS ® - VoiceBlue
User Manual
Version: 1.0
Dear customer,
Let us congratulate you on having purchased the ATEUS ® - VoiceBlue system. This
new product has been developed and manufactured to provide the maximum utility
value, quality and reliability. We hope you will be fully satisfied with our ISDN GSM
gateway satisfied for a long time.
! Important !
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The manufacturer constantly improves the firmware contained in the product. The ISP
technology (In System Programming) used therein helps you load the latest version into the
VoiceBlue gateway using a common PC anytime. For the latest firmware version including
all necessary details see www.2n.cz and for instructions see the “Firmware Upgrade“
section hereof. We recommend you to apply the latest version to avoid problems that have
been eliminated and acquire new functions free of charge.
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To set the VoiceBlue parameters using your PC, you need the “VoiceBlue – Software“. For the
latest version of this programming tool see www.2n.cz.
You also find the latest PDF version of this manual on www.2n.cz. You are recommended
to use it especially for firmware upgrade, which provides explanations of new functions.
•
Check your delivery for completeness according to the packing list mentioned below and
study this manual carefully before installing this product. The manufacturer shall not be
responsible for damage caused by using this product in contradiction with this manual. The
warranty terms and conditions do not apply to damage incurred as a result of gross handling
and/or undue storing of the product or violation of the technical parameters included herein.
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This manual is very much detailed and includes subsections that are irrelevant for basic
installation purposes. Therefore, pay attention to information which subsections are
necessary for you and which are not in order to save time.
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Preliminary information on functions that are not yet available are highlighted or printed in
grey instead of black.
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Packing List
ATEUS ® - VoiceBlue including accessories contains the following components:
Number of
Pieces
Item
VoIP GSM gateway – model according to the order number,
see the type label on the GSM gateway back side
1
Mains adapter
1
Serial laplink cable
1
Ethernet cable 4-wire (RJ-45)
1
Antenna with SMA connector
1
Wall mounting rack
1
Dowels
2
Bolts
2
Warranty certificate
1
Software on a CD-ROM
1
Notes:
1) According to the particular type
2) Enclosed software:
• Configuration software
• Driver for USB connection
• User Manual
• CE and EMC certificates
3
Note
1)
2)
CONTENTS
Introduction ..........................................................................................................................................5
1.1. Purpose ............................................................................................................................................5
1.2. Basic Description of ATEUS ® - VoiceBlue ..................................................................................5
1.3. Further Advantages and Applications ..........................................................................................6
1.4. Safety Precautions Related to rf Radiation.................................................................................6
Presentation of ATEUS ® - VOICEBLUE..................................................................................................7
2.1. Quick Installation.............................................................................................................................8
3. Basic ATEUS® - VoiceBlue Installation Instructions .....................................................................9
3.1. Proper Mounting ..............................................................................................................................9
External Antenna Connection ............................................................................................................ 10
3.3. SIM Card Setting and Installation.............................................................................................. 10
3.4. SIM Card Insertion in ATEUS ® - VoiceBlue ............................................................................. 11
3.5. Power Supply Connection .......................................................................................................... 12
3.6. PC Connection ............................................................................................................................. 12
3.7. Ethernet Connection.................................................................................................................... 13
3.8. LED Indicators .............................................................................................................................. 14
4. Voice Transmission via IP .............................................................................................................. 15
4.1. Voice Coding................................................................................................................................. 15
4.2. Establishing Connection ............................................................................................................. 15
4.3. SIP and H.323 Interconnection.................................................................................................. 18
5. VoiceBlue Connection Options ...................................................................................................... 19
5.1. Point-to-Point Mode ..................................................................................................................... 19
5.2. Point-to-Multipoint Mode ............................................................................................................. 20
6. Routing Principle .............................................................................................................................. 20
6.1. Outgoing Call via VoIP GSM Gateway..................................................................................... 21
6.2. Incoming Call from GSM Network to VoiceBlue Gateway..................................................... 22
6.3. DISA Message Recording .......................................................................................................... 22
7. Antenna Splitter ................................................................................................................................ 23
7.1. Splitter Description....................................................................................................................... 23
7.2. Technical Parameters of Antenna Splitters ............................................................................. 23
7.3. Discreet Antenna .......................................................................................................................... 23
8. Installation......................................................................................................................................... 24
8.1. Firmware Version and Limitation............................................................................................... 24
8.2. Installation Conditions ................................................................................................................. 25
8.3. Potential GSM Network Problems ............................................................................................. 25
8.4. Main Installation ........................................................................................................................... 26
9. VoiceBlue Software User Manual.................................................................................................. 28
9.1. VoiceBlue Program Installation.................................................................................................. 29
9.2. VoiceBlue Program Running ...................................................................................................... 29
9.3. Connection with VoiceBlue ......................................................................................................... 29
9.4. Main Menu and Button Bar......................................................................................................... 29
9.5. Configuration................................................................................................................................. 35
10. Configuration and Communication Using a Standard Terminal........................................... 40
10.1. Terminal Commands .............................................................................................................. 41
10.2. Work with SMS ........................................................................................................................ 45
10.3. Operational Records (LOG)................................................................................................... 46
10.4. Call Records – Description .................................................................................................... 46
10.5. Statistics - Description ............................................................................................................ 47
11. Technical Parameters ................................................................................................................. 49
1.
4
1. INTRODUCTION
1.1. Purpose
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ATEUS ® - VoiceBlue is designed for any VoIP networks supporting the SIP signalling
protocol. It allows for direct calling into the GSM network.
The voice mode, i.e. outgoing and incoming calls, is the basic function. The gateway is
equipped with all functions required for this use and provides the highest comfort in this
mode.
In addition, it enables to receive and send SMS messages.
No additional equipment is needed for operation. The system can be installed by a layman
too (the main parameters can be set comfortably using the configuration software according
to the installation instructions included in section 8.4.3, page 26). Default values are set for
all programmable parameters. You can make calls the moment you connect the gateway to
the Ethernet, connect antennas and the power supply, and install the SIM cards (your VoIP
interface configuration must correspond to your VoIP PBX requirements).
1.2. Basic Description of ATEUS® - VoiceBlue
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By connecting the ATEUS ® VoiceBlue to your VoIP PBX you can make outgoing calls to a
mobile network directly, thus eliminating the cost of the PTSN – GSM connection. Mobile
telephone calls from your field staff will be cheaper too.
You can use the most advantageous rate of your GSM provider for the GSM gateway
because the calls of all your GSM gateway users are added together.
You can use SIM cards of different providers and select the LCR (Least Cost Routing) in your
gateway thanks to the intelligent routing feature.
If you have SIM cards, the GSM gateway can use free minutes of your free SIM cards first.
If you use an answering machine, you have to pay for the GSM message delivery but if you
use your VoIP PBX VoiceMail, you pay nothing for voice message listening and message
reading.
You can bar selected numbers in your GSM gateway. You will not pay for the call you have
barred.
You can get time and duration records for selected calls. This helps you identify why your call
costs are higher than you expected.
You get an almost unlimited storage capacity for your call records thanks to a replaceable
Compact Flash memory.
The GSM gateway also generates statistics on incoming and outgoing calls automatically.
You can use both VoIP and GSM network services conveniently.
The intelligent routing of incoming calls accelerates connection of incoming calls and
provides a higher calling comfort.
The Intelligent callback function enables your staff to call at the account of the GSM gateway
SIM cards.
Voice DISA message including simple recording and editing of invitation message.
Web interface for SMS sending.
Optional use of conditioned and unconditioned call forwarding.
CLIP option.
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1.3. Further Advantages and Applications
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You are not exposed to the direct effect of the RF electromagnetic field as the case is with
mobile phones.
You need not use a serial cable for VoiceBlue. All functions are available via Ethernet and USB
interfaces.
You can implement the VoiceBlue gateway into your company‘s unified messaging using the
proper external software (or the internal web server).
1.4. Safety Precautions Related to rf Radiation
! It is prohibited to use any transmitters, i.e. the VoiceBlue gateway too, in
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areas where explosives are used, such as quarries.
It is forbidden to use mobile phones and thus the VoiceBlue gateway too
at petrol stations.
The VoiceBlue gateway may affect sensitive life-saving devices in medical
centers. So it is prohibited to use mobile phones and the VoiceBlue
gateway here.
In general, any prohibition regarding mobile phones based on RF energy
radiation applies to the VoiceBlue gateway.
Where necessary, the GSM gateway may be installed at a safe distance
(in the neighboring building, e.g.) and it must be prohibited to carry an
Ethernet line from the VoiceBlue gateway.
Although the VoiceBlue gateway is not intended for airplanes or cars, all
relevant prohibitions and regulations also apply to the VoiceBlue system.
6
2. PRESENTATION OF ATEUS® - VOICEBLUE
Wall mounting holder
SIM card 1-4 drawers
Antenna connector
USB
10BaseT
RS232 connector
Power supply
connector
Fig.1: Description of external connectors, LEDs and
functional components of the VoiceBlue gateway
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2.1. Quick Installation
•
Proper mounting - ATEUS ® - VoiceBlue is designed for vertical walls. Fit the
included wall-mounting holder and hang the gateway on it. For the prescribed
working position and more details refer to Section 3.1.
•
Cable connection – connect the gateway to your VoIP PBX using the Ethernet
cable. For more details on correct wiring refer to Section 3.7.
•
Antenna connection – connect an internal antenna cable or an external antenna
cable leading from a place with a good GSM signal to the SMA connector (see
3.2).
•
PC connection – connect the gateway to your PC to configure the VoiceBlue
gateway using the configuration software. To do so, use an RS232 crossed cable
(the same as for PC-PC interconnection) (see 3.6), or a USB cable.
•
Power supply – the delivery includes a mains adapter. Plug in the adapter
connector into the gateway and put the power adapter in a mains socket. The
gateway goes on immediately (see 3.5). (This does not apply to the 19´ rack
version where power is fed along a bus).
•
SIM card insertion – to insert a SIM card, press the yellow reader microbutton
with a suitable tool to make the small drawer slide out a little. Remove the drawer,
insert the SIM card and replace the drawer (see 3.3 and 3.4).
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Configuration software installation – run an installation file from the installation
CD on your gateway-connected PC and install the VoiceBlue configuration
software (see 10.1).
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Configuration software – run the VoiceBlue program installed, set the
communication parameters of the serial channel to which the gateway is connected.
Establish communication between your PC and the gateway (see page 26 section 8.4
).
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ATEUS® - VoiceBlue configuration – now set parameters to determine your
gateway‘s behaviour using the configuration software. They include, e.g., VoIP
parameters, basic GSM parameters and tariff metering, routing, restrictions, rates
and system parameters. Select the required function parameters and transfer the
configuration data to the gateway through the serial channel. For more details on
the configuration software refer to Section 10.3, page 29. For the basic installation
instructions see section 8.4.3, page 26.
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3. B ASIC ATEUS® - VOICE BLUE INSTALLATION INSTRUCTIONS
3.1. Proper Mounting
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The ATEUS® - GSM VoiceBlue gateway is
designed for wall mounting. The prescribed
working position is shown in Fig. 2.
•
It is possible to operate the VoiceBlue
gateway in another working position, e.g. on a
desk, for a short time only – for quick testing
purposes in the service centre, for example.
•
The allowed range of working temperatures
and relative humidity values are included in
the "Technical Parameter" section.
•
Any exceeding of the operating temperature
does not affect the VoiceBlue gateway
function immediately but may result in more
rapid ageing and lower reliability.
•
The VoiceBlue gateway is intended for indoor
use. It may not be exposed to rain, flowing water,
condensed moisture, fog, mist, etc..
Fig.2: VoiceBlue working
position
•
The VoiceBlue gateway may not be exposed to aggressive gas, acid vapours,
solvents, etc. or aggressive liquids. During cover cleaning, for example.
•
The VoiceBlue gateway is not designed for environments with high vibrations
such as means of transport, machine rooms, etc..
•
Free space has to be left under and over the VoiceBlue gateway for cables and
agitated air to remove operational heat.
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Install the VoiceBlue gateway on a place with a good GSM signal.
•
It is not recommended to install the VoiceBlue gateway or the antenna near
television, broadcasting or similar RF-sensitive devices because it may affect their
function negatively.
•
As a source of RF energy emission, the VoiceBlue gateway antenna should not
be located close to human bodies. The hazard is higher than with mobile
telephones because the gateway usually radiates energy more often if it is used
by many people.
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3.2. External Antenna Connection
Connect the external antenna cable to the SMA
antenna connector. The antenna should be installed on a
site with a good GSM signal and mounted vertically. For
antenna and cable parameters refer to the Technical
Parameters. Tighten the antenna connector gently with
your hand, never use a wrench. For the signal strength
see page 32, section 10.4.4 .
Antenna
3.3. SIM Card Setting and Installation
GSM provider and SIM card type selection
To use the VoiceBlue gateway you need a SIM
card of any of the GSM providers working in the band of
900 MHz or 1800 MHz. ATEUS® - VoiceBlue works with
all SIM cards that are supported by Siemens mobile
telephones and other mobile equipment. To make sure
that your provider‘s SIM card is supported by your ISDN
GSM gateway, try to use the SIM card in your Siemens
mobile telephone (e.g. C35).
PIN entering disable (optional)
PIN entering is set by default in the ATEUS® - VoiceBlue gateway. You can
disable this setting on your SIM card (insert the SIM card in any common mobile
telephone). If you do so, it is irrelevant how VoiceBlue has been programmed or if
there is a PIN code in the VoiceBlue memory or not. If yo u do not do so, your
VoiceBlue lights a LED requesting the correct PIN, which must be identical for all SIM
cards inserted.
Note: If a PIN-active SIM card is inserted and no PIN code is entered, the LED indicator of
this GSM nodule flashes red in the ratio of 1:1.
GSM network service setting (mailbox, call forwarding)
You have to decide before installing the SIM card whether you want to use the
forwarding of incoming calls function available in GSM networks (call forwarding in
the case of busy line, absence, unavailability…). It is mostly advantageous to disable
all such call forwarding statuses in cooperation with the PBX (especially to the
provider‘s mailbox), or use an answering machine. Where multiple GSM gateways
are connected to one PBX, you can redirect calls in case of busy line from one PBX
to another, and so on. (Call forwarding activation and deactivation are more
advantageous with the SIM card inserted in a standard GSM telephone).
Roaming settings (calling via foreign networks)
Roaming is disabled in the ATEUS® - VoiceBlue gateway by default (can be
set in the configuration program - see section 10.5.1.5, page 37). One usually does
not travel with the VoiceBlue gateway and there is risk of foreign network log-in and
dramatic cost increase in border areas in the case of local GSM network failure. To
select roaming and prefer some networks, complete the list of preferred GSM
networks using a mobile telephone and select the roaming function while
programming.
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3.4. SIM Card Insertion in ATEUS® - VoiceBlue
Insert the SIM card
in the drawer
Replace the SIM card
drawer in VoiceBlue
Remove the drawer (with
a suitable tool) to insert
the SIM card
SIM card 1 -4
To insert the SIM card, press the yellow microbutton
on the reader to slide out the drawer a little. Remove
the drawer, insert the SIM card and replace the
drawer. You can insert the SIM card even if the
gateway is on. It is recommended to insert and
remove the SIM card with the GSM gateway off.
Fig.4: SIM card insertion in VoiceBlue
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3.5. Power Supply Connection
•
Make sure that the mains voltage value is in compliance with the data shown on the
product label.
• Use the mains adapter, which is included in your VoiceBlue gateway delivery.*
• Make sure that you have connected the antenna. Connecting the power supply
with a disconnected antenna may damage the GSM module transmitter!
• Connect the mains adapter connector to the gateway (see the Bottom Face
Connectors – Fig.1). The green "Power" LED must go on in a while.
*This does not apply to the GSM gateway rack version where power is fed along a
bus.
Fig.5: Power supply connection
3.6. PC Connection
For primary setting, you can connect your new GSM gateway to your PC using
a serial crossed cable (laplink), or a USB cable (for controllers see the CD enclosed).
The maximum serial cable length is several metres. In case you plan to use a more
than 5 metres‘ long USB cable, we recommend you to use USB repeaters.
Fig.6: PC connection of VoiceBlue gateway via RS232
USB type B
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3.7. Ethernet Connection
VoiceBlue is connected to your Ethernet network like any other terminal (PC,
VoIP terminal) with a straight Ethernet cable (except for direct interconnection of two
identical units where a crossed cable must be used)..
Fig.9: View of 10BaseT connector
4
5
3
6
1 Tx
2
7
2 Tx
1
8
3 Not Used
4 Rx
5 Not Used
6 Rx
7 Not Used
8 Not Used
Fig.10: Meanings of RJ45 contacts
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3.8. LED Indicators
3.8.1.
Basic Function of LEDs
Fig.12: LED indicators
LED GSM statuses
Each module has a LED of its own to indicate its status.
Module status
Module not available
SIM card not inserted
Module is being initialised
Module is logging in
Module has logged in
Module has an active call
LED GSM 1 - GSM 4
GSM 1 and/or GSM 2
GSM 1 and/or GSM 2
GSM 1 and/or GSM 2
GSM 1 and/or GSM 2
GSM 1 and/or GSM 2
GSM 1 and/or GSM 2
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Colour / Status
Red is on
Red is on
Green flashes slowly 1:3
Green flashes quickly 1:1
No light
Green is on
4. VOICE TRANSMISSION VIA IP
4.1. Voice Coding
Voice and signal communication channels are strictly separated in the VoIP network.
The RTP (Realtime Transport Protocol) is mostly used for voice transmission in
modern VoIP networks. Its task is to transmit data (voice) from the source to the
destination at real time. So-called codecs are used to save the data bandwidth by
reducing the transmission rate using a complex algorithm. The level of compression
used by the codec affects the quality of the transmitted voice. This means that the
wider the data bandwidth (the higher the transmission rate), the higher the voice
transmission quality. The voice transmission quality is measured by the MOS (Mean
Opinion Score) where 1 means the worst and 5 the best quality. For a list of
VoiceBlue-supported codecs see the table below:
Table of VoiceBlue-supported codecs and comparison of MOS with transmission rate requirements:
Standard
Algorithm
G.711
G.726
G.729
G.723.1
PCM
ADPCM
CS-ACELP
ACELP
Transmission Rate
[kbps]
64
32
8
5.3
MOS
4.1
3.85
3.92
3.65
To achieve a high-quality voice transmission, it is important to maintain the required
transmission rate during the whole connection and a short, identical time for
transmission of one data packet.
4.2. Establishing Connection
The codec to be used for voice transmission is selected for call establishing
automatically. ATEUS - VoiceBlue is ready to use codecs included in Section 12,
page 49. It depends on your VoIP network which coding system shall be selected.
ATEUS - VoiceBlue is designed primarily for connection to corporate VoIP networks
and tries to comply with the opposite side‘s codec. If the codec is incompatible with
the VoiceBlue system, the call is rejected.
IETF SIP and ITU-T H.323 protocols are most frequently used for calling and
signalling in the world. The ATEUS - VoiceBlue gateway applies the SIP (Session
Initiation Protocol) for signalling. The SIP uses the following components:
• UAC (User agent client) – client in the terminal that initiates SIP signalling
• UAS (User agent server) – server in the terminal that responds to the SIP
signalling from the UAC
• UA (User Agent) – SIP network terminal (SIP telephones, or gateway to other
networks), contains UAC and UAS
• Proxy server – receives connection requests from the UA and transfers them
to another proxy server if the particular station is not in its administration.
• Redirect server – receives connection requests and sends them back to the
requester including destination data instead of sending them to the calling
party
15
•
Location Server – receives registration requests from the UA and updates the
terminal database with them.
All server sections (Proxy, Redirect, Location) are typically available on a single
physical machine called proxy server, which is responsible for client database
maintenance, connection establishing, maintenance and termination, and call
directing.
The VoIP-GSM Ateus VoiceBlue gateway is ALWAYS UA – has the same
functions as a VoIP telephone – receives call requests and directs calls to the GSM
networks (according to the internal LCR).
There are no SIP -defined server sections in the Ateus VoiceBlue gateway.
Basic messages sent in the SIP environment:
• INVITE – connection establishing request
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ACK – acknowledgement of INVITE by the final message receiver
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BYE – connection termination
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CANCEL – termination of non-established connection
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REGISTER – UA registration in SIP proxy
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OPTIONS – inquiry of server options
Answers to SIP messages are in the digital format like in the http protocol. Here are
the most important ones:
• 1XX – information messages (100 – trying, 180 – ringing, 183 - progress)
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2XX – successful request completion (200 – OK)
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3XX – call forwarding, the inquiry should be directed elsewhere (302 –
temporarily moved, 305 – use proxy)
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4XX – error (403 – forbidden)
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5XX – server error (500 – Server Internal Error, 501 – not implemented)
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6XX – global failure (606 – Not Acceptable)
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Connection establishing and terminating procedures in the SIP proxy server environment:
1
2 3
4
7
5 6
8 9
*
8 #
SIP Phone A
1
2 3
4
5 6
7
8 9
8 #
*
SIP PROXY
SIP/SD P IN VITE
Status: 100 Trying
SIP/SDP INVITE
ion Progress
Status: 183 Sess
sion
Status: 183 Ses
Progress
Status: 200 OK
Status: 200 OK
SIP ACK
SIP A CK
RTP/RTCP stream
SIP: BYE
SIP: BYE
Status : 200 O K
Status: 200 O
K
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SIP Phone B
SIP and H.323 Interconnection
Terminals working with the SIP can communicate with terminals working with
the H.323 protocol using the SIP/H.323 gateway. This gateway transfers signalling
messages of the two protocols. Since both the SIP and H.323 protocols use the RTP
for multimedia data transmission, they can communicate directly with each other
through the gateway once the connection is established. ATEUS - VoiceBlue can be
implemented in the existing H.323 environment using the SIP/H.323 gateway.
H.323 call
manager
VoIP Gateway
(SIP proxy)
H.323
SIP
H.323/SIP
gateway
manager
Call
H.323
SIP
SIP telephones
H.323
telephones
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5. VOICEB LUE CONNECTION O PTIONS
Ateus VoiceBlue can be employed in two modes, either Point-to-Point or Point-toMultipoint, with the SIP Proxy server.
5.1. Point-to-Point Mode
In the Point-to-Point mode, VoiceBlue can communicate with one SIP VoIP telephone
only, which is often used for testing purposes before VoIP implementation or
combination with some other SIP VoIP equipment. In this mode, it is either possible
to set the IP address of the opposite equipment as the proxy server in both units, or,
if an intelligent VoIP gateway is used, resend some calls to the VoiceBlue IP address
directly. The other side‘s IP is always set as the proxy server IP in VoiceBlue in the
P-T-P mode.
Point to Point connection (IP Telephone <> VoiceBlue)
VoIP Gateway
Point to Point connection
(all calls to GSM are directed
to VoiceBlue by the VoIP
gateway)
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5.2. Point-to-Multipoint Mode
Speaking of the Point to Multipoint mode we think of the classic layout of a distributed
VoIP network with one or more SIP Proxy servers (VoIP gateway). The SIP proxy
server is a software version of a PBX (or a standard PBX extended with VoIP
services), which is responsible for all VoIP signalling services. In this mode, multiple
source units (e.g. VoIP telephones) and multiple destination units (e.g. VoiceBlue)
can be used. An internal routing algorithm (LCR) of your SIP proxy is used in this
mode to route calls going to GSM and other networks. GSM calls can be routed via
VoiceBlue gateways connected. All signal communication (SIP) is controlled by the
SIP proxy server here and the subsequent voice stream is executed in the RTP
Point-to-Point mode.
Fixed network
VoIP Gateway
(SIP proxy)
SIP
ISDN Gateway
Call
6. ROUTING PRINCIPLE
An incoming call from the VoIP port is routed according to the internal routing
algorithm (LCR) to an arbitrary GSM port. An incoming call is routed directly to the
defined SIP address or the DISA tone dial-in is activated. Routing can also be made
on the basis of the CLIP (incoming call number).
The internal routing algorithm distinguishes the type of outgoing calls, the
current time rate, day of the week, or free minutes on GSM providers‘ SIM cards, and
routes outgoing calls according to these settings.
If an outgoing call is routed via a busy port, the next available port is used
(depending on the configuration). In case none of the allowed outgoing ports is free,
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the outgoing call is rejected. In the latter case, your SIP proxy can either use another
gateway or terminate the unsuccessful call.
6.1. Outgoing Call via VoIP GSM Gateway
6.1.1. Routing to GSM Network
The moment a VoIP subscriber seizes the line and dials a number, your SIP
proxy routes the call to the VoiceBlue gateway. In case the outgoing route is defined
for the outgoing prefix in the VoiceBlue LCR, the connection request is accepted and
the gateway tries to establish connection through the defined GSM module(s). In
case the call has an unknown prefix or all outgoing routes are occupied, VoiceBlue
rejects the call request. However, it depends on your SIP proxy configuration whether
calls intended for GSM networks shall be directed to VoiceBlue or not.
Note: If the GSM gateway is busy, the SIP proxy can either give the caller the busy
tone - - - -, or the PBX selects another connection type (there may be more gateways
than one connected to the PBX).
6.1.2. LCR (Least Cost Routing)
The LCR function is enabled on the VoIP port. The Network lists include
prefixes (up to 8 prefix groups can be defined). In addition, you can sort out GSM
modules into up to 4 GSM groups using the configuration software. Select the
outgoing GSM group(s) in the LCR (Least Cost Routing) chart to be used if the
outgoing call prefix matches one of the Network lists. You can set a number of free
minutes for each GSM group for each SIM card. In this case, you can give priority to
SIM cards with the highest number of free minutes in the GSM group. An adjustable
accuracy of deduction of free minutes and automatic recovery of the free minute credit
on a defined day (applicable to SMS too) are a matter of course. If there are more
GSM groups defined for one prefix in the LCR chart, the gateway attempts to establish
the call using the highest-priority group and, if unsuccessful (all GSM modules of the
group are occupied), the gateway attempts to establish the call using the next group
automatically. Having exhausted all GSM groups defined, the gateway rejects to
establish the call.
6.1.3. Establishing Connection
You do not pay for your connection until the called party answers the call. The
GSM network signals this moment (connect) and the GSM gateway transfers
this information to the SIP proxy. You can send the so-called connecting tone
to the called party in outgoing GSM calls*.
*GSM modules of the TC35i version can activate/deactivate a connecting tone,
which fills in the silence between the request sent to the GSM network and the
ringing tone.
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6.2. Incoming Call from GSM Network to VoiceBlue Gateway
Below is an incoming call sequence. The actions are arranged as they occur.
All of these services can be enabled and disabled selectively.
1.
CALLBACK
If the CALLBACK function is activated and the incoming call identifies itself with a
CLIP matching the CALLBACK CLIPs, the GSM gateway does not receive the call
and lets it ring. When the ringing is terminated, the GSM gateway calls back to the
GSM network (the CLIP number) and, when the GSM side answers the call, starts to
play back its DISA voice message allowing for the DTMF dial-in.
2.
CLIP Routing
Having find out that the incoming call number (CLIP) matches a number included
in the "Autorouting" chart, the gateway connects this call directly to the VoIP
destination selected.
3.
DISA DTMF Dial-In
If the DISA DTMF dial-in function is enabled and an invitation message (or
another dialtone) has been recorded, this message is played back for every incoming
call except for calls described in items 1 and 2 and the DTMF dial-in is awaited for a
defined timeout. Having received a sufficient number of digits (see the Setting), the
gateway gets through to the SIP proxy inquiring of the defined IP destination.
Should a number with a lower count of digits than defined be accepted, the
dialling should be terminated with a #. If the DISA rejects a pre-programmed number
or the # character, no connection is established. Therefore, enable the operator
service (see below) while activating the DISA service.
4.
Operator
The gateway supports dialling to the operator(s). Hence, you can set different
numbers for the GSM ports to be dialled-in to the VoIP network. There may be
multiple operator numbers for each GSM incoming destination. In case the SIP proxy
designates the first-dialled destination as unavailable, the gateway attempts to
connect the call using the next one. For example, the gateway can work with the
operator service in the incoming mode only. In that case, all incoming calls are
directed to the operator number.
6.3. DISA Message Recording
A DISA message can be recorded in the gateway using the configuration tool
enclosed or a terminal. The voice file must have defined parameters (included in the
table). The file can also be recorded using a terminal with the aid of the XMODEM
transmission protocol.
Acoustic format
Sampling Frequency
Count of channels
Codec
Wav
8kHz
1 (mono)
ISDN Alaw
22
7. ANTENNA S PLITTER
7.1. Splitter Description
The antenna splitter is a passive unit suitable for GSM gateways. It combines 4
antenna inputs into one antenna output. The antenna splitter saves antenna cables,
the number of outdoor antennas and mounting space on the roof.
As a passive unit it inserts loss between the antenna and equipment.
7.2. Technical Parameters of Antenna Splitters
Parameters
Connector type
Output antenna connector
RF parameters
Impedance
Frequency
Insertion loss
Isolation between two channels
Value
Note
SMA type, female
50 OHM
850 – 1900 MHz
< 8 dB
> 20 dB
7.3. Discreet Antenna
Discreet antenna basic parameters:
Type
Frequency
Gain
Cable
Connector
Car antenna
900/1800 MHz
3dB
Small coax cable 174A (5 m)
SMA (male)
Discreet antenna
23
8. INSTALLATION
8.1. Firmware Version
Before installing your VoiceBlue gateway please upload the new firmware into
the gateway. You find the current firmware version and all necessary software on an
enclosed CD or on our website www.2N.cz .
FIRMWARE uploading procedure:
− Connect your PC to VoiceBlue via RS232/USB.
− Prepare the firmware-containing file into a folder selected by you (Pxxxx-Vxx.xx.xx.bin.
− Run the VoiceBlue program.
− Select the “Upload firmware” item in the “Gateway control” menu.
− Select the file containing new firmware (Pxxxx-V-xx.xx.xx.bin).
− The program now automatically uploads your new firmware (it takes about 2
minutes).
− The gateway is reset during this procedure (thus discontinuing all current calls
and SMS). Do not interrupt the program during this procedure to avoid errors
in firmware uploading – otherwise the gateway might stop working!
Should the firmware uploading procedure be terminated, please make cool
reset of the gateway and re-load the VoiceBlue program and try to upload the
firmware again.
24
8.2. Installation Conditions
The following system installation conditions must be met:
- appropriate location (enough free space);
- GSM signal intensity (minimum signal level: –80db); you can use the
NETmonitor on a mobile phone (e.g. Nokia, Siemens) as a GSM signal intensity
meter;
- un-overloadable GSM cells to which the GSM gateway modules are logged-in.
Please keep in mind that full traffic means up to 30 calls at the same time
(according to the gateway configuration!);
- no strong electromagnetic radiation on the system installation site;
- no strong reflections on the antenna installation place;
- the VoIP connection must be configured properly and meet related
recommendations.
8.3. Potential GSM Network Problems
The VoiceBlue works reliably even under a 100% load. GSM networks may cause
the following problems:
1. The GSM modules cannot log in, log in slowly or log out occasionally. This
problem can have two causes:
•
The GSM signal level is low – the recommended minimum signal level is
approximately -80dB, if lower, the GSM antenna location must be
changed.
•
The GSM cell to which the modules try to log in is overloaded – the GSM
antenna location must be changed or decrease number of GSM channels
which are using problem GSM network.
2. One of the GSM modules is permanently logged-out or fails to receive
incoming calls – this problem indicates a GSM network overload due to
heavy traffic. You can eliminate this problem by the above mentioned
solutions or extend the “relaxing time“ – i.e. the delay between two calls via
one GSM module (the recommended value is 2 seconds). In case any of the
GSM modules cannot log in to the network even after reset, your GSM
provider may have located the SIM card but refused to log it in because
either too many calls are made using this card, or the SIM card keeps logged
-in to the same GSM cell and the same GSM module for too long. This
problem can be solved by occasional exchange of SIM cards between
modules.
25
8.4. Main Installation
•
•
•
•
Place the gateway into an environment that corresponds with its working
conditions .
Configure the gateway properly using the configuration software included.
The gateway mains supply must be backed-up and overvoltage-protected (a
line-interactive or on-line UPS is recommended).
For a more comfortable gateway administration, it is advisable to have one of
available remote control tools on site (Ethernet).
8.4.1. Control Ways
The system can be supervised and controlled locally or remotely as follows:
A.
Local control using a PC connected by a standard full crossed serial
cable.
B.
Local control using a PC connected by a USB 1.1 cable.
C.
Remote control over the IP network using a standard Telnet protocol.
8.4.2. Configuration Ways
The system can be configured in any of the following two ways:
A.
using extended AT commands (refer to Appendix A);
B.
using the VoiceBlue program..
A PC can be used for both the ways, either locally (via a serial cable), or remotely
with a modem, using the Telnet protocol over IP, or via the B-channel.
Since VoiceBlue is constantly being upgraded, you are advised to use
the latest VoiceBlue software firmware version.
8.4.3. Your First Installation (Quick Step-by-Step Guide)
1/ Connect the gateway with the PC via an RS232/USB cable.
2/ Install&Run the VoiceBlue program from attached CD.
3/ Open the COMMUNICATION parameters in VoiceBlue program and select the proper
COM port for VoiceBlue connection
4/ PROGRAMMING, SYSTEM Section (for description see page 35, Section 10.5.1.1):
- Add the IP address and IP mask of the VoiceBlue system (in case you
want to make remote control via the IP);
- Enter the PIN code (in case the PIN code is enabled on your SIM cards)
!!! WARNING – IN CASE YOU HAVE PIN-ACTIVE SIM CARDS ALL THE
SIM CARDS MUST HAVE AN IDENTICAL PIN CODE AS DEFINED IN
THE VoiceBlue !!!
5/ PROGRAMMING, ETHERNET Section (for description see page 36, Section 10.5.1.2 ):
- Set right settings of SIP signalization. Please do not remember that for right
function you should modify settings in yo ur SIP.
6/ PROGRAMMING, GSM SETTINGS (for description see page 36, Section 10.5.1.3 ):
- Divide the GSM modules (cards) into outgoing and incoming GSM groups
according to your installation requirements.
26
8/ PROGRAMMING, NETWORK LIST Section (for description see page 39, Section
10.5.1.7):
- In case you use multiple GSM providers please delete all of the eight
Network lists and add GSM provider 1 prefixes to Network list 1, GSM
operator 2 prefixes to Network list 2, etc… Please remember to add the
correct length of the dialled number for each prefix.
9/ PROGRAMMING, LCR TABLE Section (for description see page 39, Section 10.5.1.8):
- Here you have the possibility to define at what time which prefixes (saved
in network lists) are to be routed to which GSM group. You can select more
GSM groups in one line – the gateway attempts to use another GSM group
in case the first GSM group is unavailable or busy. Moreover, you can set
more attempts for one GSM group > for increase ASR…
10/ Open the CONTROL , D ATE AND TIME item in the top menu of the GATEWAY CONTROL
to set time and date in the gateway.
11/ Open the CONTROL , C HANGE USER NAME AND PASSWORD items in the top menu of
the GATEWAY CONTROL to change access rights for remote control via Telnet or PRI
ISDN.
12/ Save the configuration to the PRIGW.
13/ Plug in the SIM cards, connect the antennas and restart the gateway.
If you had a problem with the gateway function please read this manual carefully and
check all parameters. You can also contact us by e -mail (techsupport@2n.cz).
Please describe the problem in detail and attach the gateway configuration file
(config.cfg) in your e-mail message.
27
9. HOW TO CONNECT VOICEB LUE VIA USB
You can make connection between your PC and VoiceBlue via USB 1.1
connection. A Drivers for OS Windows 98SE/ME/2000/XP you find on attached CD.
The main installation procedure is very easy:
- insert the CD to PC
- connect USB cable to PC and then to the VoiceBlue gateway
- the Windows OS automatically recognize new hardware on USB BUS and
ask you for right drivers.
- The drivers you find on the CD in following path:
CDROM:\VoiceBlue\USB drivers
- OS automatically recognize right driver and install it
- OS can ask you for drivers for USB COM port, these drivers are in same
directory on the CD.
Please do not install different USB drivers for the gateway connection
Microsoft does not certify that you are using OS Windows XP, please click to OK in
case of warning that driver.
After successful installation you can communicate with VoiceBlue via virtual serial
port (default number is 3).
28
10. VOICEB LUE SOFTWARE USER MANUAL
10.1. VoiceBlue Program Installation
The ATEUS® - VoiceBlue delivery includes an installation CD containing the
ISDN GSM program installation data. After you insert the CD in your PC CD-ROM,
an introductory page is displayed showing an overview of 2N products. Select
VoiceBlue. Now click on the VoiceBlue program installation in the new window. A
simple installation guide will help you install the software.
10.2. VoiceBlue Program Running
Once the installation is completed, start the program by clicking on the
"VoiceBlue program" in your PC program menu, clicking on the icon on the
desktop, or running the "VoiceBlue program.exe" file, which you find on the
appropriate location installed by you with the aid of any explorer or file browser.
10.3. Connection with VoiceBlue
Once the program has been installed, set the gateway communication. To do this,
select the "Setting > Communication" menu items. The basic setting is shown in the
figure. For more details see section 10.4.5.
The "Gateway > Connect gateway" menu or the "Connect gateway" icon on the
button bar can be used for gateway connection and gateway–PC communication.
Select the "Modem" function only for remote gateway supervision using a connected
modem. You can use a standard RS232* interface or Ethernet 10baseT (Telnet) for
the gateway connection.
In case that you are connected via standard serial cable you have to set transmission
rate to 57600 bps.
Note: If you have more gateways than one, then follow the gateway communication
instructions included in Section 10.4.2.
29
10.4. Description of icons on main window
For easier controlling of VoiceBlue GSM gateway have VoiceBlue program modern
graphical interface. On table below you have description of all icon buttons which you
can find on this start window::
Icon
Description
End of VoiceBlue program
Minimalization of the program
Helo
Settings of VoiceBlue program
Switching of language
On-line control items
Program parameters
On-line monitoring of the gateway
Reset of the gateway
Selection of the gateway from list of gateways
Communication settings
30
10.4.1. Control menu, File
Using this menu, you can work with the config.cfg gateway configuration file or
default configuration file, i.e. load, save, ... It contains an item for program end
too.
•
Load – loads the last-saved configuration file from the VoiceBlue program
directory. Or requires loading of default settings upon the first run.
Save – saves the current settings into a file in the VoiceBlue program directory (or
in a folder defined in the List of gateways – refer to 10.4.2).
Load from – loads a file from a folder selected by you.
Save as – saves a file into a folder selected by you.
Default settings – loads the preset default configuration.
Program end – terminates the program.
•
•
•
•
•
10.4.2. Control menu, Gateway
Used for connecting / disconnecting the gateway. You can select a gateway from
the List of gateways if you use remote control.
•
•
Connect gateway – connects VoiceBlue with your PC and establishes mutual
communication via an RS232 serial interface or using the Telnet protocol.
Note: The gateway must be connected and the "Comm. settings " items have
to be selected properly.
Disconnect gateway – disconnects the gateway and discontinues its
communication with your PC.
If you communicate with more gateways than one, you are advised to have
each configuration file in a different directory to avoid unintentional rewriting of
the configuration file with another gateway configuration. To do this, use the
following menu:
10.4.3.
GATE menu
• Select gateway from list – select a gateway (directory with the configuration file)
to be connected to the PC.
• Connect gateway from list – get connected to the selected gateway.
• List of gateways – edit the list of gateways including directories.
• Terminal – select the command-type control and work with the VoiceBlue (refer
to section 11.1, page 41).
31
10.4.4. Control and Monitor menu
Contains commands for VoiceBlue (available only if the VoiceBlue gateway is
connected).
• Diagnostics – information on boards (GSM modules and PRI board), contains 9
cards whose numbers correspond to those of VoiceBlue positions (00=PRI
board).
Ethernet – contains information on statuses VoIP interface.
GSM – includes information on statuses and types of GSM modules on the GSM
board.
- Layer 2,3 – status of the module communication layers.
- GSM network – name of the network to which the module is currently logged in.
- Network ID – ID code of the network (MCC+MNC) to which the module is currently
logged in.
- GSM cell – identification number of the GSM cell to which the module is currently
logged in.
Description of displayed numbers:
NETCELL: A,BBB,CCC,DDDDD
A = status :
0 - not registered
1 - registered to home network
2 - not registered, but ME is searching for a new operator
3 - registration denied
4 - unknown
5 - registered to roaming network
BBB = first byte of LAC (location area code) in dec format
CCC = second byte of LAC in dec format
DDDDD = cell ID
-
GSM group – number of the current GSM group.
Active SIM – number of the active SIM card on this GSM module.
Module ID - international identification code of the GSM module (IMEI).
Rev ID – GSM module firmware revision number.
SIM Number – SIM card serial number.
ID SIM card– international identification code (IMSI) or SIM serial number (SCID)
of the SIM card.
Signal intensity – the current signal level in the network to which the module is
logged in (minimum value = -113 dB – the module is logged out).
Block button – blocking of the selected GSM module (unavailable for outgoing
and incoming calls).
Down button – used for blocking a module after the current call end.
Reset button – hardware reset of a board or GSM module.
32
•
•
•
•
•
Info on current calls – information on currently made calls. This information can
be arranged according to the GSM module.
Connection status – status of all possible remote/local VoiceBlue control ports.
Buffer status – current buffer status (CDR). The maximum capacity is 511 calls.
Tracing – item for storing traces from IP/GSM layers.
GSM Monitor info – with this feature you can download information to the GSM
cell where the GSM module is connected.
Description of response parameters from a TC35i module:
•
•
•
•
•
Chann
ARFCN (Absolute Frequency Channel Number) of the BCCH (THC)
carrier. If chann is h BTS supports hopping during connection.
Rs
RSSI (Received signal strength) of the BCCH carrier from 0 to 63.
The indicated value is composed of the measured value in dBm plus
an offset. This is in accordance with a formula specified in 3GPP
TS05.08
dBm
Receiving level of the BCCH carrier in dBm
PLMN
PLMN ID code
LAC
Location area code (HEX)
Cell
Cell ID code (HEX)
NCC
PLMN colour mode
BCC
Base station colour mode
PWR
Maximal power level used on RACH channel in dBm or current power
level
RXLev
Minimal receiving level (in dBm) to allow registration
C1
Base station selection coefficient
TS
Timeslot number
timAdv
Timing advance in bits
Q
Receiving quality (0-7)
Chmod
Channel mode (S_HR: Half rate, S_FR: full rate, S_EFR: Enhanced
full rate)
Export statistics – used for storing and clearing of statistic data from the
VoiceBlue gateway connected. For a detailed description of statistic data refer to
page 47.
Data into gateway – sends and saves the configuration file into the gateway, the
program then resets the gateway – for internal configuration updating – and
saves the config.cfg file into the VoiceBlue program folder (or a folder pre-defined
by you if you use the "Multi-gateway menu“ option).
Reset – resets the gateway and initialises all VoiceBlue boards (the gateway
communication is not discontinued but all current calls and ready-to-send SMS
are terminated!).
Factory reset – resets the gateway, selecting the factory (default) settings. The
gateway communication is not discontinued upon this command.
Upload firmware – uploads the firmware into the gateway.
33
FIRMWARE uploading procedure:
− Prepare the firmware-containing file into a folder selected by you (Pxxxx-Vxx.xx.xx.bin).
− Select and open the "Upload firmware" file.
− The program now automatically uploads your new firmware – the gateway is
reset during this procedure (thus discontinuing all current calls and SMS). Do
not interrupt the program during this procedure to avoid errors in firmware
uploading – otherwise the gateway might stop working!
Should the procedure of uploading firm ware be terminated, please reset the gateway,
re-load the PRIGW program and try to upload the firmware again.
CAUTION!: Be sure to use original and undamaged firmware files for firmware
upload to avoid gateway function problems! For the latest firmware ve rsion see our
websites (www.2n.cz).
•
•
•
•
•
Time and date – sets time and date in the gateway.
Change username and password – sets username and password for access to
VoiceBlue via TELNET.
Download trace – saves gateway operation and error records on the disk.
Save call data – saves records on calls on the disk (the records remain in the
VoiceBlue gateway).
Save call data and delete – saves records on calls on the disk and clears the call
memory.
10.4.5. Setting Menu
Contains communication (see Section) and language settings.
Communication
• Direct to COM port – program communication through an RS232 serial interface.
• Modem – communication through a connected modem.
• TCP/IP – communication through the TELNET protocol via Ethernet.
• Transmission rate – the recommended and default value is 57.600 bps.
10.4.6. Help Menu
Contains a help to the PRIGW program, instructions for help use and details on the
program version.
34
10.5. Configuration
As already mentioned, the program includes the "Topics" and "Alphabetical
glossary" folder menus. These menus contain identical items (as shown in the
figures below) and it depends on the user which of them he or she chooses for
easy orientation. You can set ISDN GSM gateway parameters in these menus.
10.5.1.
Programming
10.5.1.1 System Settings
This window allows you to set the basic parameters of VoiceBlue.
• IP address – IP address of the VoiceBlue Ethernet port.
• IP mask – VoiceBlue port IP address mask.
• Init sequence for modem – an AT command sent by VoiceBlue via COM2 when
it detects a connected modem.
• Record calls – records information on calls.
- No calls – the gateway does not record any call information.
- Successful outgoing – the gateway records information on all
successfully connected outgoing calls.
- Successful outgoing+incoming – the gateway records information on
all successfully connected outgoing+incoming calls.
- All outgoing – the gateway records information on all outgoing calls.
- All outgoing+incoming – the gateway records information on all
outgoing and incoming calls.
• Record monitor info – if this feature is activated, the gateway saves the
NETmonitor information too in the CDR line. With this feature activated you have
only a half of the memory for the CDR !!!
• PIN code - the PIN code that the gateway tries to enter if a PIN-active SIM card is
inserted (this item has no meaning if a SIM card without an active PIN is used).
• Gate ID – a code that is added to the call data recording line. With this code you
can identify more easily the VoiceBlue gateway on which the CDR was
generated (in case you collect CDRs from multiple VoiceBlue gateways).
• Dial for far control – number for remote control via the DATA B-channel (this
feature is optional).
• Automatic logout of GSM modules - this function is used for an automatic logout of modules at a defined time. If logged-in modules are occupied by a call,
logged-out modules log in to the network automatically. When the traffic
decreases, the modules log out at random intervals.
• Enable automatic logout – Enable / disable of this function.
• Logout Hour – time when modules start to log out randomly from the
GSM network.
• Login Hour – time when modules start to log in to the GSM network.
• Min. logged-in modules – the minimum number of GSM modules that
remain logged-in.
• Automatically move to summer/winter time – for automatic summer/winter time
switching.
35
10.5.1.2 Ethernet
-
Mode/Protocol – Select signalisation protocol
Day of delete statistics – Day of automatic deleting of the statistics of VoIP
interface
Voice parameters, First and last RTP port – you have to set right range of used
ports for RTP protocol (protocol for voice transmit).
IP addresses – settings for SIP proxy server and for NAT firewall.
SIP registration – additional settings for successful log-in to you SIP proxy server.
10.5.1.3 GSM Basic settings
§
§
§
Number of digits dialled from VoIP – sets outgoing VoIP calls into GSM
networks.
− Maximum – the maximum number of digits to be dialled into a GSM
network. Any dialling longer than or equal to this parameter is dialled
automatically (without waiting time).
− Minimum – the minimum number of digits to be dialled into a GSM
network.
− Waiting for next digit – time (in seconds) for VoiceBlue to wait for the
next dialled digit. After this timeout, the number is dialled automatically
into the GSM network.
Call delay - the minimum timeout between the end of a call and the
beginning of another outgoing call for one GSM module (incoming and
outgoing calls are not rejected during this timeout). The optimum time is 2
seconds. Unless absolutely necessary, do not change the default value to
avoid system instability.
DTMF number – sensitivity of the DTMF receiver from the GSM network.
The “delay” parameter means 10*miliseconds added to the default value of
20ms. The total time is the minimum delay between two DTMF chars.
Example: DTMF number=30 delay=30*10+20=320
10.5.1.4 GSM, Assignment to Groups
The table of GSM module assignments to Outgoing (VoIP>GSM) and
Incoming (GSM>VoIP) GSM groups.
36
10.5.1.5 GSM, Outgoing Groups
Settings for outgoing GSM groups (and SIM cards*). In this section you can
set all parameters for each SIM card for outgoing calls from the ISDN PRI to
GSM networks.
Day of delete statistics in group – the xth day of a month on which the GSM group
statistics is to be deleted.
Delay for send CONNECT (s) – delay for sending the CONNECT message to the
ISDN PRI interface (in case VoiceBlue builds an ISDN-GSM call).
Timeout for send ALERTING(s) – timeout for sending the ALERTING message to
the ISDN PRI interface (in case VoiceBlue builds an ISDN-GSM call); 0= switched
off.
Roaming enabled for network – an international ID of the GSM network
(MCC+MNC) that is enabled for roaming. Please leave it free if you don’t want to
enable roaming.
CLIR – This parameter determines whether a subscriber number on the gateway SIM
card shall be dialled into the GSM network or not. All VoiceBlue outgoing calls
present the calling line numbers as inserted in the VoiceBlue SIM card. Technically, it
is impossible to transfer number information from the ISDN into the GSM network
(the opposite function is supported, i.e. all ISDN subscribers can see the GSM calling
number). Hence, it is mostly purposeful to restrict the calling line identification
(activate CLIR) to avoid problems with backcalls to the gateway in the case of a
missed GSM call, for example. Select this parameter for each GSM group separately.
− Default - settings according your GSM provider’s network.
− Enabled (CLIP-off)** – the CLIR function is activated, no numbers are sent
to the GSM network. CAUTION! Your GSM provider must support and
activate this service! If not, the number will still be sent to the network and
outgoing calls will be impossible with some providers.
− Disabled (CLIP-on) - the CLIR function is disabled, numbers are sent. Your
GSM provider must support and activate this service! If not, the number will
still be sent to the network and outgoing calls will be impossible with some
providers.
**Some GSM networks (SIM cards) do not support CLIR activation via GM22 GSM
modules, in that case you can see: Network: clir-err in the status window.
Max. of called minutes – call time limit for one month for one SIM card.
Number of SMS messages – number of SMS messages sent via a SIM card per
month.
Day of restore limits – day on which the “call time limit” and “SMS” counts are reset
to zero (1 to 31).
First count – length of the first count. After this timeout, VoiceBlue uses the “next
count” parameter to calculate the length of the call (1 to 250 seconds).
Next count – length of the next counts (1 to 250 seconds).
The First count and Next count parameters are used for calculating the real length of the
call from the viewpoint of the GSM provider.
37
Example 1: If your calls are charged on the second basis, set both parameters to 1.
Example 2: If your calls are charged on the minute basis for the first minute after
answering and then by seconds, set the first count to 60 and the next count to 1.
A proper setting of these parameters helps you keep an actual record of minutes
spent and charged for each SIM card. These parameters are used for limit counts
and statistics (not for the CDR).
10.5.1.6 GSM, Incoming groups
Settings for incoming calls from GSM networks to the VoIP interface.
Incoming calls to VoIP– sets how VoiceBlue shall process incoming calls from GSM
networks and route them to the PRI ISDN interface.
Mode – sets how VoiceBlue shall answer incoming calls from GSM networks.
- Reject incoming calls - by selecting this item you bar GSM incoming
calls (the calling subscriber gets the busy tone*).
- Ignore incoming calls – by selecting this item you ignore GSM
incoming calls (but the calling subscriber gets the ringing tone).
- Receive incoming calls + voice message – incoming calls are
routed to the ISDN interface according to the following parameters.
- Receive incoming calls + dialtone – incoming calls are routed to the
ISDN interface.
- After ring callback / Refuse – activated callback (for CLIP it is saved
in the Autorouting/Callback table). Other calls are rejected.
- After ring callback / Ignore - activated callback (for CLIP it is saved
in the Autorouting/Callback table). Other calls are ignored.
- Report to PC + voice message – external callback (for callback
centre) with a saved voice message.
- Report to PC + dial tone - external callback (for callback centre) with
the dialtone.
Minimum digits in DTMF – minimum count of DTMF digits in DTMF dial-in.
Maximum digits in DTMF – maximum count of digits to be DTMF-dialled for
incoming calls. An ISDN call is made automatically with the currently selected DISA
(or DTMF prefix if necessary) after the last DTMF dialling.
Timeout while inputting DTMF digits(s) – time (in seconds) for VoiceBlue to wait
for the first and next DTMF digits. After this timeout, either the DTMF number
received so far is dialled into the ISDN or, if no DTMF digit is dialled, a number is
dialled from the “List of dialled numbers”.
List of called numbers - list of numbers to be dialled automatically gradually (in the
case of unavailability or busy) if no DTMF dialling (DISA) is made.
Prefix before DISA preselection – prefix added before the DTMF dial-in. For
example: the DTFM digits received are 487 and this prefix is 6655. Hence, the
gateway sends number 6655487 to the PRI ISDN interface.
CLIP - with this parameter you can replace the “+“ chars with different digit(s) in the
CLIP. In case you leave this parameter blank, the gateway only removes “+“ from the
CLIP.
38
Looping of DISA message – sets an automatic repetition of the DISA voice
message in case of incoming DTMF dial-in.
10.5.1.7 GSM, Network List
A list of prefixes for GSM providers.
Table of replaced prefixes – prefixes to be replaced (in VoIP – GSM calls) with
other prefixes (e.g. +420 replaced with 0)*.
*make this change before you find the right prefix in the table of prefixes!
Table of prefixes – prefixes called from the VoIP. By filling-in this table you can set
the length of the called number. If you do not complete this parameter, the VoiceBlue
gateway uses the “Default number of digits“ setting.
Network number – ID code of the GSM network for these prefixes*
*this parameter is used in higher firmware versions for pseudotariffication. Please fillin this parameter.
•
10.5.1.8 GSM, LCR
A table of outgoing Least Cost Routing (LCR) options. Every outgoing call VoIP
interface is routed to the GSM according to this table. VoiceBlue checks line by
line during every call and if the called prefix matches any item in the network list
and the current call meets the time limits, the call is routed via the defined GSM
group(s) or PRI 2 interface.
Network list number – number of the “Network list”
Time limitation – validity time of this line
Weekend – determines whether this line is valid on weekends and holidays.
Groups - GSM destination of outgoing calls for GSM group(s) (in case the first GSM
group is unavailable, the call is re-routed via the next GSM group or cancelled)
(without ACK setup).
Limit - maximum call length (in minutes). A call is disconnected after this timeout.
The maximum value is 60 minutes. If you set a “0”, the call length is unlimited (limited
by the GSM network).
10.5.1.9 GSM, Autorouting / Callback Table
A table for the Callback and Autorouting functions.
Callback – in case you activate callback in the GSM incoming group, you can add an
authorised CLIP, which can use the callback function.
Autorouting – you can select a destination in the VoIP for each CLIP; these CLIPs
are then automatically connected with the defined number on the VoIP.
Limit – maximum length of the call.
39
11. CONFIGURATION AND C OMMUNICATION USING A STANDARD
TERMINAL
You can communicate with the GSM gateway via an internal serial link or USB
or TCP/IP connection.
The serial link communication requires a full crossed RS232 cable (laplink). The
following communication parameters have to be selected too:
Communication rate
Bits
Stop bits
Parity
Flow control
File transmission protocol
57600bps
8
1
None
Hardware
XMODEM
The USB communication requires an active controller (enclosed), which
installs a new virtual COM port in the Windows system to be used during
communication.
The gateway only supports the TELNET protocol for TCP/IP communication
(port 23).
The gateway behaves like an ANSI terminal with echo. Commands are text entered and the Xmodem protocol is used for file transmission. An access password
can be selected. The gateway requires the password with the “USER“ and
“PASSWORD“ prompts; if the password has been entered or is not required, the
gateway sends the > prompt. The gateway uses an extended set of AT commands
for configuration (see below).
40
11.1. Terminal Commands
By default, all commands start with AT.
A/
repeat last command (without AT)
I3
I4
&FRES
&V
&VE
&V0
&V1
&V9
&P
&N#
&NALL
&A
&R
&TIN
&TOUT
&G#=atcommand
&GALL=cmd
&G#=cmd
&S
&S=info
&SL
&S#
&QALL
&Q#
&L
&C
&CR
&BSYS=cmd
&X
&X#
&M0
&M1
&M9
&U
copyright & firmware
serial number
factory defaults & reset
view active parameters (system)
view active parameters (ethernet)
view active parameters (common)
view active parameters (groups 1..4)
view active parameters (inc. groups)
view pseudo params
view network params (net 1..8)
view all network params
view autorouting table <SPACEcontinue>
view lcr-routing table <SPACEcontinue>
view lan + groups + modules inc totals
view lan + groups + modules out totals
send at command to gsm 1..4
cmd for gate 1..4 (RESET,BLOCK,OFF)
cmd for gate 1..4 (RESET,BLOCK,OFF,ATBAUD)
view lan + module status
view all modules selected info (by at&S#)
view lan status
view one module status (1..4)
view signal quality on all gsm
view signal quality on gsm 1..4
view logfile from recent <SPACEcontinue>
view buffer (calls) from recent <SPACEcontinue>
read buffer from the oldest <#erase & continue>
cmd for system (RESET)
view conn table/gsm (call states)
view call details/gsm (1..4)
disable ansi colors
enable ansi colors
start matrix
view logged users
extended user commands
&EA
&EA=cmd
view arp table
cmd for arp table (RESET)
disk commands (under development)
&DI
&DC=cmd
&DD[=dirname]
&DF[=filename]
view cfc disk info
cmd for cfc (RESET,FLUSH)
open/close dir ;list directory
open/close file ;view ascii file
41
system params:
%S70=iii.iii.iii.iii
%S71=iii.iii.iii.iii
%S72=iii.iii.iii.iii
IP address
IP mask
IP router
%S91=buf,id
cdr mode (b0=outg, b1=inc, b2=failed, b3=moninfo)
unit id (0=off, 1..255)
%S92=rep
report mode (b0=states, b1=tstamp, b2=smp,
b3=lay2, b4=select)
%S98=pin
sim pin (max 7 digits)
%S99=dd.mm.yy.w/hh.mm.ss set date/time (w=1..7 day of week)
%X20=mmdd,mmdd
%X80=login/pass
date of hour+1,hour-1 time change (0=off,0101..1231)
login name / password (max 15 chars all)
ethernet params:
%E00=xxx
%E01=c1,c2,c3
%E02=exp,rep
%E03=rtp1,rtp2
%E08=bits
%E09=day
protocol (==I00)
codec list (18,8,0)
expire (sec >= 600), reattempt (sec >= 10) for sip.reg.
first (>=1024), last (>=first+10) RTP port, even only !
bit1=ringing
day (0=off,1..31) of clearing stat
%E10=x.x.x.x
%E11=x.x.x.x
%E12=x.x.x.x
%E14=x.x.x.x
%E16=x.x.x.x
SIP proxy for calls IP-->GSM
SIP proxy for calls IP<--GSM
MGCP gateway
SIP registrar
NAT firewall
E80=name/pass
registration name / password (max 31 chars all)
group params:
%G00=xxxx
%G01=0,dspo,dspi
%G02=mode,atms,afms
%G06=mmdd,..mmdd
%G07=mmdd,..mmdd
%G08=delay,min,max,tout
%G09=scn
out.group numbers for g1..g4 (0=off, 1..4=group)
dsp output,input gain (1= -31dB, 32=0dB, 63=+31dB)
tc35 mode (2,4)
atms/afms gain (+5dB=3,+2.5dB=1,0dB=0,-2.5dB=2,-5dB=4)
holiday list (0101=1st jan, 1231=31st dec)
holiday list2
gsm call delay (0..10 sec), dial min/max (0..20)
dial tout (0..20 sec)
sim card number (0=imsi,1=scid)
%G#1=netid,clir,min,sms,day,sec,sec2,pseudo sim #1 params
netid (7 chars), clir (0=netw,1=on,2=off)
min (0=0ff,1..65535 minutes), sms (0=off,1..65535)
day (0=off,1..31), sec/2 (1..250), pseudo (0=off,1..8)
%G#9=ale,conn,disc,day,lim alerting tout (0=off,1..20sec), conn delay (0..20sec)
forced disc (0=off, 1=on sim limit, 2=on sim or time limit)
day (0=off,1..31) of clearing group stat,
42
call durat. limit (0=off, 1..99 min)
%G90=xxxx
inc.group numbers for g1..g4 (0=off, 1..4=group)
%G9#=mode,min,max,tout,day,dial,clip params #=1..4 for inc.groups 1..4
Mode (0=reject,1=ignore,2=ok-message,3=ok-tone)
min(0..20), max(0..20) tout (0..20 sec) dtmf dial-in
day (0=off,1..31) of clearing inc.group stat
dial prefix (max 15 ch), clip prefix (max 7 ch)
%G9#=xxx,xxx,xxx
auto dials (max 63 chars) #=5..8 for inc.groups 1..4
pseudo params:
%P01=uuu/HH:MM,
%P02=uuu/HH:MM,
%P03=uuu/HH:MM,
%P04=uuu/HH:MM,
%P05=uuu/HH:MM,
%P06=uuu/HH:MM,
%P07=uuu/HH:MM,
%P09=mode,sec
pseudo tariff 6x cents/until (cents=1..9999)
(until=00:00first item is all weekend)
(until=24:00last mandatory item)
pseudo tariff extension
pseudo tariff extension
pseudo tariff extension
pseudo tariff extension
pseudo tariff extension
pseudo tariff extension
pseudo mode (0=off,1=cdr,2=cdr+isdn), isdn.sec (1..250)
network params:
%N#0=opx/npx,
%N#1=pref/dig,
%N#2=pref/dig,
%N#3=pref/dig,
%N#4=pref/dig,
%N#5=pref/dig,
%N#6=pref/dig,
%N#7=pref/dig,
%N#9=netid,max
list of old/new main-prefixes (max 47 chars)
list of prefixes/digits-to-end (max 63 chars)
pref. list extension (max 63 chars)
pref. list extension (max 63 chars)
pref. list extension (max 63 chars)
pref. list extension (max 63 chars)
pref. list extension (max 63 chars)
pref. list extension (max 63 chars)
network id (7 chars), default max digits (0..20)
routing params:
%A##=clip/dial
set autorouting item (ix 0..95)
clip (20), dial(20)
%R##=net,hh:mm/hh:mm/w+-,groups,lim set lcr-routing item (ix 0..63)
net (1..8), groups (max 7 chars=1..9)
call limit (0=off, 1..99min)
;
;
;
;
totals
first m,c,s
second m,c,s
ri,ro
%TL=m,c,m,c
%TG#=m,c,ri,ro
inc. minutes,calls,sms
out. minutes,calls,sms
redirected inc,out calls
init minutes,calls in lan (0..65535)
init minutes,calls,rin,rout in group # (0..65535)
43
%TGALL=m,c,ri,ro
%TI#=m,c
%TIALL=m,c
%TM#=m,c,s,m,c,s
%TMALL=m,c,s,m,c,s
init
init
init
init
init
minutes,calls,rin,rout in all groups (0..65535)
minutes,calls in inc.group # (0..65535)
minutes,calls in all inc.groups (0..65535)
minutes,calls,sms in mod # (0..65535)
minutes,calls,sms in all modules (0..65535)
service AT commands:
!V0FB=key
!RE
!RR
!RX
!R#
!L#
!P
!Q
!SB##=ddd,ccc
!M=cmd
set system key
report errors only
start report layer2..4 on COM1 (from COM2)
stop report layer2..4 on COM1 (from COM2)
report messages
1=layer1..4
2=layer2..4
3=layer3..4
4=layer4
report lan
2=ip/arp..telnet
3=tcp/udp..telnet
4=telnet
view process info
view system info
callback to GSM/ccc (0..31,32=by prefix) & PRI/ddd (cyclic)
cmd for message system (ERASE;RECORD;READ;WRITE)
spec gsm commands:
at&g##=at+cnum
view own number
at&g##=at+cpin="####"
at&g##=at+clck="SC",0,"####"
at&g##=at+clck="SC",1,"####"
set pin (before pin checking off !!!)
pin checking off (####=PIN)
pin checking on (####=PIN)
at&g##=at+cpin="****"
set pin (before pin changing pin !!!)
at&g##=at+cpwd="SC","****","####" pin change (****=old, ####=new PIN)
at&g##=at+cacm?
at&g##=at+camm?
at&g##=at+cpuc?
accumulated call meter
maximum call meter
call meter currency/unit
*some of the above mentioned AT commands may not be available in the current firmware version.
44
11.2. Handling with SMS
Commands for SMS sending and receiving
AT!G=A6
AT!G=55
Start low-level control of SMS (can run on one port only)
Stop low-level control on used port
SMS control
AT^SX=ch
AT^SR=ch,ix
AT^SD=ch,ix
AT^SM=ch,len,pdu,csum
AT^SG=grp,len,pdu,csum
…(sms listing) request to list all SMS messages and status
confirmations saved on SIM card. Possible answers:: *smserr
(busy,list) or *smsinc (ix=1..255) for each saved SMS or status SMS ,
end of list or empty SIM card - *smsinc (ix=0).
…(sms read) request to read an SMS message or SMS status saved
on SIM card. Possible answers: *smserr (busy,read) or *smspdu
…(sms delete) request to delete an SMS message (or SMS status
message). Possible answers: *smserr (busy,delete) or *smsdel
…(sms to module) request to send a message via GSM module 0..31
or via any GSM module (ch=32). Possible answers: *smserr
(busy,write) or *smsout
…(sms to group) request to send an SMS message via GSM group
1..8. Possible answers: *smserr (busy,write) or *smsout
Messages from VoiceBlue unit
*smsinc: ch,ix,sts
… SMS received and saved onto SIM card:
• Ch
…GSM module number 0..31
• Ix
…index number of saved SMS messages 0..255
• Sts
…status of SMS message
*smsrep: ch,ix
…SMS status confirmation received and saved to SIM card (this
message is only for GSM modules TC35 and GM47)
*smsout: ch,ix,ref
…SMS message sent and not saved onto SIM card:
Ref
…reference number of sent SMS 0..255 (will be used in SMS
status confirmation message)
*smspdu:
ch,ix,sts,len,pdu,csum
…content of SMS message or status confirmation:
• Len
…length of SMS message (number of bytes in pdu)
• Pdu
…content message in PDU format
•
Csum
…Checksum of all PDU bytes (2 hexa digits)
calculated without carry
*smsdel: ch,ix
SMS message or status confirmation was deleted from position ix
*smserr: ch,ix,req,err
response to error command:
• Req
…required GSM module or GSM group
•
Err
…error code (6=busy, 40=write, 41=read, 42=delete,
43=list)
45
11.3. Operational Records (LOG)
Type
POWER
INIT
Text
[Power on]
[Power off]
[Warm boot]
[Watchdog]
[BKPT code]
[Stack error]
[Divided by zero]
[RETI code]
[NMI intr]
[VOID intr]
[Upgrade reset]
[Software reset]
Eeprom
Flash
HW-ERR
Codec ##,RD/WR
COM2 #####,RD/WR
Duart #####,RD/WR
Hscx #####,RD/WR
SYSERR User stack error!
BRDIN
#08 TYP STS
BRDOU #08 TYP STS
T
BRDRES #08 TYP STS
ALL GSM RESET CMD
SYSTEM RESET CMD
G2-ERR ATD/ERROR init (g##)
GSM Cause 150 (g##)
G3-ERR
C4-ERR
tout sts # (g##)
tout sts # (p##/g##)
Description
System switched on
System switched off
Restart of system, unknown cause
Restart of system by watchdog
CPU error: break code detected
CPU error: stock integrity failure
CPU error: dividing by zero
CPU error: illegal using of instruction reti
CPU error: wrong interrupt
CPU error: wrong interrupt
Start of upgrade firmware procedure
Reset by AT commads (at&fres…)
Initialisation of eeprom (configuration)
Initialisation of flash memory (firmware)
(##…address of chip, RD…read value/WR…expected
value)
Error in initialisation of codec on GSM,AUX board
Error in initialisation of COM2 on AUX board
Error in initialisation of serial controller on GSM board
Error in initialisation of HDLC controller on AUX board
SW error: stock integrity failure
board inserted (number of gsm board, type, status)
board disconnected
Reset of board by AT command
Reset of all GSM boards by AT command
Reset of system by command at&bsys
Error of layer 2 isdn: restart of module g## after rejected
command ATD by GSM network
Error of layer 2 isdn: restart of module g## after cause
150 was received (call barred by GSM network)
Error of Layer 3 isdn: timeout in status # on module g##
Error of Connecting layer 4: timeout in status # on call
between channel p## and GSM module g##
11.4. Call Records – Description
Example of a successfully connected call:
** 31.07.02/11:07:53 O-OK CAU-016 aux/g02 GRP-1 0:23 001:40 00000.00
1 0608218005 45456060
1/8942019636000065750
• 1. column: **
• 2. column: call start date/time
• 3. column: call type
− I-FD : unconnected incoming call attempt(will be implemented in higher
firmware versions)
− I-OK : successfully connected incoming call (will be implemented in higher
firmware versions)
− O-FD : unconnected outgoing call attempt
− O-OK : successfully connected outgoing call
• 4. column: CAUSE sent to VoIP
46
•
•
•
•
•
•
•
•
•
5. column: number of used VoIP -channel/number of used GSM module
6. column: used GSM group (C= callback )
7. column: call establishing time
8. column: call duration mmm:ss (max. 255:59) or error cause for
unconnected calls
8. column: call cost (will be implemented in higher firmware versions)
9. column : gateway id (optional)
10. column: called number
11. column: caller number
12. column: number of slot/IMSI* of used SIM card
11.5. Statistics - Description
[Group call statistics]
gsm
(reset) minutes hhhh:mm:ss calls reject failed c.offs errors
-----------------------------------------------------------------------------#i1 inc (31.12)
0 0:00:00
0
0
0
0
0
#i2 inc (31.12)
0 0:00:00
0
0
0
0
0
#i3 inc (31.12)
0 0:00:00
0
0
0
0
0
#i4 inc (31.12)
0 0:00:00
0
0
0
0
0
gsm
(reset) minutes hhhh:mm:ss calls reject failed red.in redout
-----------------------------------------------------------------------------#g1 out (31.12)
0 0:00:00
0
0
0
0
0
#g2 out (31.12)
0 0:00:00
0
0
0
0
0
#g3 out (31.12)
0 0:00:00
0
0
0
0
0
#g4 out (31.12)
0
0:00:00
0
0
0
0
0
#g5 out (31.12)
0 0:00:00
0
0
0
0
0
#g6 out (31.12)
0 0:00:00
0
0
0
0
0
#g7 out (31.12)
0
0:00:00
0
0
0
0
0
#g8 out (31.12)
0 0:00:00
0
0
0
0
0
[ Statistics of incoming calls on all modules ]
modules brd minutes hhhh:mm:ss calls sms minutes hhhh:mm:ss calls sms
--------------------------------------------------------------------------------------------------------------#00 #01 00
0
0:00:00
0
0
0
0:00:00
0
0
#02 #03 01
0
0:00:44
1
0
16
0:16:37 10
0
#04 #05 02
14
0:14:15
7
0
5
0:05:31
3
0
#06 #07 03
4
0:04:21
3
0
0
0:00:00
0
0
#08 #09 04
0
0:00:00
0
0
0
0:00:00
0
0
#10 #11 05
0
0:00:00
0
0
0
0:00:00
0
0
#12 #13 06
0
0:00:00
0
0
0
0:00:00
0
0
*each line is for two GSM modules
[ Statistics of calls on GSM module #0 ]
sim/dir net/grp minutes hhhh:mm:ss calls reject failed c.offs sms
-----------------------------------------------------------------------------#1 inc
/1
14 0:14:15
7
0
2
9
0
#2 inc
/1
0 0:00:00
0
0
0
0
0
#3 inc
/1
0 0:00:00
0
0
0
0
0
47
#4 inc
/1
0 0:00:00
0
0
0
0
0
-----------------------------------------------------------------------------#1 out
/1
439 7:19:51 177
0
6
44
0
#2 out
/1
0 0:00:00
0
0
0
0
0
#3 out
/1
0 0:00:00
0
0
0
0
0
#4 out
/1
0 0:00:00
0
0
0
0
0
-
Pri/grp : call type
Reset : Last statistic reset date
Minutes : Number of minutes
Hhhh:mm:ss : Same number converted to time
Calls : Number of calls
SMS : Number of sent SMS messages
Reject: number of unconnected calls (no free GSM module available - call rejected with cause
41(42))
Failed: number of unconnected calls (rejected by GSM network)
C.offs: number of unconnected calls (terminated by calling party)
Errors: number of unconnected calls (wrong requests - disallowed prefix etc.)
Red.in: number of connected calls (re-routed to this GSM group)
Redout: number of connected calls (re-routed to another GSM group)
48
12. TECHNICAL PARAMETERS
GSM
Mobile network type
GSM 900 phase II
EGSM 1800 MHz
SIM card
Transmission power
Receiver sensitivity
plug-in 3 V (“small“)
2 W (1W)
-104 dBm
Antenna
Frequency
Impedance
Max. power output
Antenna connector type
Cable length
900 / 1800 MHz
50 Ω
2W
SMA (male)
3-10 m or without cable
Power supply
Adapter
DC power
Supply connector
Lithium battery
230 V±10%, 50/60 Hz / 12V DC
12 V DC / 1.2 A
DC jack, 2.1 mm
CR2032
VoIP
Signalling
Count of channels
Codecs
Echo cancellation
VAD/CNG
(Silence Suppression)
PCM Companding
Interface
RS232
Connector
Transmission rate
USB
Connector
SIP
4
G.711 PCM at 64 kbps
G.726 and G.727 E-ADPCM at 16 to 40 kbps
G.723.1 (optional) MP-MLQ/ACELP at 6.3/5.3 kbps
G.168-2000; max. echo length 25ms (15 ms for
G.729A)
G.729B or G.729A coders
G.723.1A for G.723.1 coders
A-law/u-law (selectable)
D-Sub 9 contacts - slots
57600 bit / s
B type
USB 1.1
Ethernet
RJ45
10BaseT
Remote supervision
Ethernet (telnet)
Others
Dimensions (without connectors)
Operating temperature
Relative humidity
250 x 150 x 50 mm
0°C to 40°C
5 to 95% (non condensing)
49
50
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