Aeta Audio Systems | Scoop Studio | User manual | Aeta Audio Systems Scoop Studio User manual

SCOOP STUDIO
User Manual
AETA AUDIO SYSTEMS S.A.S.
Parc technologique - Kepler 4
18-22, avenue Edouard Herriot - 92350 Le Plessis Robinson – FRANCE
Tél. +33 (0)1 41361200 – Fax +33 (0)1 41361269
Web : http://www.aeta-audio.com
55 000 033 – Ed. D
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March 2006
Table of contents
1.
2.
SCOOP STUDIO – Easy quick Start ...............................1
Introduction ........................................................................2
2.1. Functions..............................................................................................2
2.2. Applications .........................................................................................3
3.
Setting up the SCOOP STUDIO .......................................4
3.1. Power ...................................................................................................4
3.2. Connection to the ISDN .......................................................................4
3.3. Connection to the POTS.......................................................................4
4.
SCOOP STUDIO STRUCTURE ......................................6
4.1. Front view ............................................................................................6
4.2. Scoop Studio status ..............................................................................6
4.3. General synoptic diagram.....................................................................7
5.
Audio section.......................................................................8
5.1. Encoding and decoding ........................................................................8
5.2. Audio Interfaces .................................................................................11
5.3. Audio performance.............................................................................12
5.4. Audio monitoring ...............................................................................14
6.
SCOOP STUDIO OPERATION: How it works. ..........15
6.1. Introduction ........................................................................................15
6.2. User interface .....................................................................................15
6.3. Scoop Studio Menu ............................................................................16
7.
How to Set-Up Profiles on the Scoop Studio..................21
7.1. What is a profile ? ..............................................................................21
7.2. How to manage profiles on the Scoop Studio ....................................21
8.
Connecting 2 SCOOP STUDIO. .....................................24
8.1. Initiating a call....................................................................................24
8.2. Disconnecting a call ...........................................................................26
8.3. Auto Answering .................................................................................26
8.4. Entering local Numbers......................................................................26
8.5. Entering SPID Numbers ( USA ) .......................................................27
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9.
POTS Information ........................................................... 28
9.1. Factory default configuration............................................................. 28
9.2. POTS modes ...................................................................................... 29
9.3. Network parameters........................................................................... 29
9.4. Error protection.................................................................................. 30
10. Troubleshooting ............................................................... 32
11. Tests................................................................................... 33
11.1. Audio section testing ....................................................................... 33
11.2. Network test..................................................................................... 34
12. ISDN modem information ............................................... 35
12.1. ISDN Protocols................................................................................ 35
12.2. ISDN CLEARING CAUSES........................................................... 35
13. How to open a SCOOP STUDIO ready for servicing... 38
14. Connectors layout ............................................................ 39
14.1. Remote Connector ........................................................................... 39
14.2. AUX Connector ............................................................................... 39
14.3. POTS Interface ................................................................................ 40
14.4. ISDN Interface Network.................................................................. 41
14.5. External DC connector..................................................................... 42
14.6. Environment .................................................................................... 42
SCOOP STUDIO - User manual
This document is the property of AETA AUDIO SYSTEMS and can not be duplicated without authorisation
55 000 033 – Ed. D
March 2006
1. SCOOP STUDIO – Easy quick Start
1.
Plug ISDN or POTS line to the appropriate socket on rear of unit
2.
Plug in audio connections.
3.
Power on the Scoop Studio via switch On/Off on rear panel of unit.
4.
Select the appropriate network via the network menu
5.
-
To use direct dial “Number” mode , enter a number
-
To dial one of 5 last numbers press
-
To use a profile number, enter a letter
“green phone” key once.
For 2 last modes, select the profile number via keypad ( left and right key )
6.
Press
7.
If busy or bad connection Press
"red phone" then press the
key twice to redial the last number dialled.
8.
Connection status will be displayed in LCD screen once connected.
“green phone” key again for dialling.
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“green phone”
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2. Introduction
2.1. Functions
The Scoop Studio is designed to enable radio broadcasters to conduct high quality live
two-way remote broadcasts, or two way commentaries with return cue, via ISDN or
POTS lines.1
2.1.1. Algorithms
The Scoop Studio contains a mono audio compressor/de-compressor (Codec) that
performs all necessary ISDN and POTS algorithms.
In ISDN mode, the user can select one of four operational audio standards:
1. Phone mode (G.711, 3,5kHz)
2. Live speech ( G.722, 7kHz, low delay )
3.
Music CD quality (Layer II, 20kHz)2
4. Live concert (4SB-ADPCM,15kHz, proprietary low delay ) 2
In POTS mode, the user has only live speech mode ( CELP , 7kHz )
One outstanding feature of Scoopy codec is the 5A System® on receiving an incoming
ISDN call, the unit can automatically detect the coding algorithm and parameters of the
calling codec, and then adjust itself in a compatible configuration so that the connection
succeeds regardless of the initial configuration and that of the remote unit.
2.1.2. Audio interfaces
The Scoop Studio contains one audio input, one audio output and one headphone for
monitoring
2.1.3. Transmission
Using an ISDN line, transmission bit-rate is either 64kbps or 128kbps2. Using a POTS
line, transmission bit rate depends on the telecommunication network quality with a
maximum bit-rate of 33.6 kbps. The Scoop Studio transmits data at a minimum rate of
12.000 bits and at a maximum of 24.000 bits of information a second
1 Depending on configuration version
2 On the 15kHz ISDN version
® 5AS = Aeta Audio Advanced Automatic Adjustment System
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The Scoop Studio can work in many countries using various ISDN standards.
As ISDN protocol may vary from country to country, consult
your AETA dealer before carrying your Scoop Studio abroad.
2.2. Applications
News remotes.
Live sport commentaries with local contributors.
Remote two-way interviews.
Remote contributions into studio discussions.
Live music concerts.
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3. Setting up the SCOOP STUDIO
3.1. Power
3.1.1. Optional DC supply
The Scoop Studio will also work on any external 8 to 15-volts DC source. A typical
source will be a car cigarette adapter. Connect your DC power cord to the socket at the
back panel of the unit ( labeled DC In 8-15 V 2A), and plug the other end into your DC
power source.
Note : See the chapter 14 for the connection.
3.2. Connection to the ISDN
Connect the (RJ45) connector of the ISDN cable into the socket on the back panel
marked "ISDN", and connect the other end of the cable into the ISDN wall socket.
The ISDN modem of the scoop is a S/T or a U interface depending on the unit type.
You can select the correct ISDN protocol for a given country from the menu.
Given the various kinds of ISDN protocols used in different countries or inside PBXs,
ISDN compatibility problems may occur. Please be sure to select the right protocol for
the country you are in. In case oftrouble please contact your AETA dealer for advice.
3.3. Connection to the POTS
Connect the (RJ11) connector of the telephone cable into the socket on the back panel
marked "ANALOG", and then connect the other end of the cable into the telephone wall
socket.
The Scoop Studio's RJ11 connector will accept 4 or 6 conductor modular plug, but only
the 2 center conductors, ( typically Red & Green ) are used.
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Caution: Every country has its own style of telephone connector. Consult your
engineers, your local AETA dealer for further advice.
Dialing methods
Telephones dial numbers either by pulsing the line, (you will hear a "clicking" sound
similar to that heard when dialing from a rotary dial telephone) or by sending audio
tones ( DTMF ) The Scoop Studio can dial using either pulse or DTMF tones.
Caution:
Do not connect the Scoop Studio to a telephone jack that provides power for
lighting a telephone's dial.
Do not connect the Scoop Studio to a party line or coin-operated telephone line.
Not suitable as an extension to a pay phone or use with a shared service line or
1+1 carrier system line.
You should disable call waiting if in use.
PBX and PABX applications
The internal modem of the Scoop Studio is only approved for use as an extension
instrument to compatible PBXs.
Contact AETA AUDIO S.A. or your local dealer for an up-to-date list of PBXs with
which the internal modem is compatible.
AETA AUDIO S.A can not guarantee that the Scoop Studio will operate correctly under
all possible conditions of connections to compatible PBXs. Any cases of difficulty
should be referred in the first instance to AETA AUDIO S.A.
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4. SCOOP STUDIO STRUCTURE
4.1. Front view
Figure 1 - Front panel
1 - LCD display
2 - Function keys
3 - Status LED’s
4 – Keypad
5 – Bargraph
6 – Monitoring selection
7 – Headphone socket
8 - Headphone volume adjustment
4.2. Scoop Studio status
There are 28 LED’s on the front panel providing the following information :
-
Info ( 2 yellow LED’s ) : Relay status
-
Alarm (red) : When “on”, indicates a network problem.
-
Dec (green) : When "on" indicates that a successful connection exists and the
Scoop Studio is decoding the POTS or ISDN signal.
-
Tx Level meter : 11 LED’s ( scale –20 to + 5 VU ) + an Overload led
-
Rx Level meter : 11 LED’s ( scale –20 to + 5 VU ) + an Overload led
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4.3. General synoptic diagram
DSP board
Optional DC
Board
Interfaces
board
Motherboard
Microprocessor
board
Power board
LCD
Monitoring Board
Figure 2 – Scoop Studio synoptic
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5. Audio section
5.1. Encoding and decoding
Scoop Studio use includes a wide range of coding algorithms. First, one can select
among algorithms compliant with ISO and ITU-T1 recommendations :
•
G711;
•
ITU-T G722 (mono at 64 kbit/s);
•
MPEG Audio Layer II at 48, 32, 24 or 16 kHz, with programmable channel
mode and bit rate ;
MPEG Audio and G722 algorithms comply with ITU-T J52 recommendation for ISDN
transmission. Besides, other algorithms are available, that are so-called “proprietary”
because they do not comply with enforced standards :
•
Proprietary MPEG Layer II at 64 kbit/s or 128 kbit/s (for compatibility with
ISDN codecs that are not compliant with the J52 recommendation) ;
•
4SB ADPCM, running in mono at a 128 kbit/s bit rate; the bandwidth with this
algorithm is 15 kHz ;
•
TDAC mono, running at 64 kbit/s, with a 15 kHz bandwidth ; available as an
option.
The following describes some important features of the various available algorithms and
protocols.
5.1.1. Notes about G711
G711 is the standard coding used for voice transmission on public telephone networks.
This algorithm is used for links (via ISDN) with telephones or hybrid devices.
1 former CCITT
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5.1.2. Notes about G722
With G722 coding, two synchronisation modes are available:
•
“Statistical recovery” byte synchronisation method (alias SRT) ;
•
H221 synchronisation; in this case, 1.6 kbit/s from the compressed data are used
for this.
•
H221 synchronisation and H242 protocol
H221 synchronisation is highly recommend when possible, as it features higher
reliability and faster recovery time, while degradation ( because of the bit rate used for
framing) is minimal.
H242 synchronisation is recommended by ITU-T, and is included in J52. However, the
mode with H221 synchronisation but without H242 protocol can be useful for
compatibility with old generation codecs which did not use this protocol.
5.1.3. Notes about J52 and MPEG coding
The ITU-T J52 recommendation was defined in order to allow the interoperability of
various equipment over the ISDN1, using common coding standards. It includes the
following features:
•
Interoperation procedures as per ITU-T H242 recommendation ;
•
In the case of MPEG encoding, optional protection against transmission errors
(Reed-Solomon error correction codes).
It must be noted that, thanks to the interoperation protocol, J52 codecs, when setting up a
link, can negotiate automatically and agree on a configuration that is compatible with the
capability of both units (regarding bit rate, channel mode, etc.). In this way, when the
units differ in their capability (or make), the resulting configuration may be different
from expected beforehand, but in most cases the link will work and audio will be
transmitted.
As another useful consequence, this also gives users more tolerance to mistakes when
configuring the units on the two sides of the transmission links, as the codecs will adapt
automatically even with differences in the initial settings of the two units.
1 J52 is not needed nor applicable to leased line connections
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5.1.4. Notes about TDAC
As an option, the codec can also include the TDAC algorithm. TDAC is for Time
Domain Aliasing Cancellation ; this is a transform coding based on an MDCT (Modified
Discrete Cosine Transform), encoding a 15 kHz bandwidth mono signal at a 64 kbit/s bit
rate. When the option is installed, three modes are available :
•
TDAC mono full-duplex, running at 64 kbit/s, with a 15 kHz bandwidth ;
•
G722/TDAC : G722 encoding, TDAC decoding, running both in mono at
64 kbit/s ;
•
TDAC/G722 : TDAC encoding, G722 decoding (with SRT), running both in
mono at 64 kbit/s ; this mode is symmetric to the previous one.
5.1.5. Symmetric or asymmetric codec modes
The codec allows two communication modes:
Symmetric communication: in this mode, the encoder and decoder both use the same
coding algorithm with the same configuration (channel mode, etc.). In this case, the
communication is strictly symmetric full-duplex, with exactly the same coding
configuration used in both directions (local to remote and remote to local). This is
usually required when using proprietary algorithms.
Asymmetric communication: this mode is used for applications requiring different
coding configurations in the two directions. The J52 protocol allows such mode. To give
some examples, it is possible to transmit MPEG in one direction and G722 in the other
one.
With the TDAC option, asymmetric modes are also available wherein one direction is
G722 coded while the other one is TDAC coded. Such mode is useful e.g. in order to get
a low delay return path encoded in G722 while the send path is encoded with higher
quality but a higher delay.
5.1.6. Relays
In ISDN mode with MPEG L2 J52 or 4SB ADPCM and in PSTN mode ( Secured mode
must be disable ) you have access to the relays.
•
You can activate remote relays by pressing key “F1” for the first relay and “F3” for
the second relay : Option “Relays(Keys)”, “On”
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•
You can do the same thing with the 2 optos : Option “Relays(Optos) ”, “On”
•
When you press one of these keys or enable an opto input :
-
On the LCD of the local unit, we display “C1” or “C3” “ON” depend on the key
pressed.
-
On the remote unite, we activate relay(s) 1 or/and 2 and the LED “INFO 1”
or/and “INFO 2” light(s) on .
Note :
In PSTN mode you have only access to the first relay.
5.2. Audio Interfaces
5.2.1. Analogue audio Input
Audio characteristic are measured over a 20 to 20kHz bandwidth except when diffently
stated.
Format
Connector
Maximum input level
Input impedance
Common mode rejection ratio
balanced
3-pin female XLR socket
+0 to +22 dBu by step pf 1dB ( menu )
10 kΩ
>60dB @ 1kHz
Table 1 – Input interface
5.2.2. analogue audio Outputs
The audio signal output is available on the line level output.
The monitoring source can be changed with the headphone key.
- If the led in the extension of the Tx bargraph is light, you have the local audio
signal on the headphone.
- If the led in the extension of the Rx bargraph is light, you have the return audio
signal on the headphone.
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-
If the same both leds are light, you have the local audio signal on the left ear
and the return on the right ear.
Line Out Interface :
Format
Connector
Maximum output level
Balanced
3-pin male XLR socket
+0dBu to +22dBu by steps of 1dB (
software selection )
≤ 50 Ω
> 60 dB
Output impedance
Output symmetry
Headphone Interface :
Connector
Maximum output level
Load impedance
6.35mm jack socket
+20dBu
≥ 16 Ω
5.3. Audio performance
A ) Analog performance
Measurement condition:
-
AD/DA Loop
-
Sample frequency : 48kHz
Maximum Gain ( Input to Output )
Signal to Noise ratio
Bandwidth
Distortion ( THD+N)
+22dB
84dBrms
20Hz – 20 000 Hz ± 0.5dB
< 80 dB (0.01%) @ 950Hz
Table 2 – Audio performance
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B) In ISDN mode
Data rate
128 kbit/s
Sample
frequency
48kHz
128 kbit/s
128 kbit/s
128 kbit/s
128 kbit/s
64 kbit/s
64 kbit/s
64 kbit/s
64 kbit/s
64 kbit/s
64 kbit/s
64 kbit/s
32kHz
24kHz
16kHz
32kHz
48kHz
32kHz
24kHz
16kHz
32kHZ
16kHz
16kHz
Bandwidth
Delay
Algorithm
20Hz - 20kHz
137ms
MPEG II (- / J52 )
20Hz – 15kHz
20Hz – 10.4 kHz
20Hz – 7.2 kHz
20Hz – 15 kHz
20Hz – 20kHz
20Hz – 13.4kHz
20Hz – 10.4 kHz
20Hz – 7.2 kHz
20Hz – 15kHz
20Hz - 7kHz
300Hz – 3.5kHz
202ms
268ms
398ms
7ms
163ms
202ms
268ms
400ms
80ms
11ms
17ms
MPEG II (- / J52 )
MPEG II (- / J52 )
MPEG II (- / J52 )
4SB ADPCM
MPEG II (- / J52 )
MPEG II (- / J52 )
MPEG II (- / J52 )
MPEG II (- / J52 )
TDAC
G722 SRT/H242
G711- phone
Table 3 – ISDN mode
Note : In MPEG II without J52, Scoop Studio is compatible with other manufacturer
codecs.
C) POTS mode - CELP Algorithm
Data rate
12Kbit/s
14.4Kbit/s
16.8Kbit/s
19.2 Kbit/s
21.6 Kbit/s
24.0 Kbit/s
Audio quality
3.6kHz
4.3kHz
5.1 kHz
5.7 kHz
6.3 kHz
7.2 kHz
Bandwidth : 40 Hz to 7 kHz (@ 24 kbps data rate)
24 kbit/s can typically be achieved in all countries
that support V.34 modems on their public
switched networks.
Higher rate depends on line quality.
The CELP algorithm is optimised running at 24
kbit/s.
Table 4 – CELP
Note : CELP is a proprietary algorithm of France Telecom CNET
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5.4. Audio monitoring
The 12 LED's labeled “Tx” on the front side of the Scoop Studio indicate the peak level
of the sending audio signal. The level display reference (0 dB) is 8 dB below the
clipping level.
The 12 LED's labeled “Rx” on the front side of the Scoop Studio indicate the peak level
of the receiving audio signal. The level display reference (0 dB) is 8 dB below the
clipping level.
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6. SCOOP STUDIO OPERATION: How it works.
6.1. Introduction
Incoming audio into the Scoop Studio is digitized by a state-of-the-art A/D converter and
processed through the Scoop Studio's codec. The data is then sent via the internal ISDN
or POTS synchronous modem to the telephone network ( ISDN or POTS ) to a remote
Scoop Studio or another compatible ISDN Audio Codec. Operating with a very fast
DSP, the codec runs an algorithm modeling the digital audio signal, in order to reduce
the digitized audio data rate.
At the other end of the telephone network, the answering Scoop Studio reconstructs the
original audio signal with very little loss or induced artefacts and at an extremely low
audio delay time.
6.2. User interface
The user interface consists of a lexan matrix keypad and a LCD display. The keypad has
two sections.
- The first section is a 4x3 matrix including the numbers from 0 to 9,“*”, “#”.
Some keys have many functions :
2, 3, 4, 5, 6, 7, 8, 9, 0: for accessing to letters display on the key, press the key
several times.
Note : Space character is available on the “1” key.
- The second section is the Extended Keypad functions under the display.
There are 3 function keys not labeled. The key function depends of the menu, the
function label appears over the key on the second line of the display
- The third section is the special Keypad functions.
“OK” key to validate a choice.
“Esc” key to escape from a menu.
“Green phone” key to make a call.
“Red phone” key to on hook a call.
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6.3. Scoop Studio Menu
1) Main menu
TOOLS
SETUP
To scroll in the sub-menus use the keys under the word
If a second sub-menu exists, you can enter by pressing again the key under the word
At any time you can return to the main menu by pressing the Esc key.
Note : the symbol between “TOOLS” and “SETUP” means :
“DIRECTORY”
If you press “green phone” key, you access to the 5 last called number.
If you enter a letter, you access to the remote directory.
If you enter a number, you can make a direct call.
Note : If you have a restricted menu, you can disable it by pressing
the directory key and this following sequence: “1”,”6”,”4”,”3”
6.3.1. Scoop Studio default configuration
The Scoop Studio's “General reset” set default configuration is useful to configure the
modem in case communication difficulties are encountered.
Note : The stored calling numbers are not erased when you make a General reset.
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17
MISC
Aux Functions
Relays(Keys)
OK
Relays(Optos)
Off
GENERAL RESET
CONFIRM : OK
CURRENT CONFIG
PMPEG L2 24K 1B
TOOLS
Status
MISC
General reset
TOOLS
Misc
SETUP
English
OK
English
French
KEYBOARD LOCK
Off
On
MISC
Keyboard lock
Off
Net
5A SYSTEM
On
USER ACCESS
Full
Reduced
Menu 3
SETUP ISDN
Audio Cod
MAINTENANCE
U.access
MISC
5A System
ABOUT
V3.06 Dual 20K
O : SSGW2-1.22
SW SN :809
LOOP2-network
OK
None
Loop2-network
Loop3-codec
AD/DA
Analog loop
Test tone
Coding test
Reinit
MISC
Language
MAINTENANCE
About
Menu 2
DIRECTORY
Remote
Local
MAINTENANCE
Tests
TOOLS
Maintenance
TOOLS
NETWORK
ANALOG
ISDN
Or
Menu 4
SETUP ANALOG
Net Audio Cod
Menu 1
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NETWORK : ANALOG
ToISDN
OK
>Number 2
Replace
>Number 1
Replace
ASSOCIATED COD
Current
Current
None
>Name_
Replace
NETWORK : ISDN
ToAnalog
OK
REMOTE PROFILES
New
N>Name
LOCAL SETUP
Load
N>Name
Delete
>Name_
Replace
LOCAL SETUP
Save as
N>Name
LOCAL SETUP
Delete
Menu 2
N>Name
Delete
REMOTE PROFILES
Edit
DIRECTORY
Local
Remote
REMOTE PROFILES
Delete
N>Name
Load
REMOTE PROFILES
Load
Menu 1
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19
PARAMETERS
Protocol
For U interface
Nortel DMS
NI-2
AT&T 5E10
Australia
OK
For S interface
Australia
Belgium
Euro ISDN
France VN2
France Vn3
France Vn6
Germany 1TR6
Japan NTT
Japan KDD
Menu 4
NETWORK : ISDN
ToAnalog Param
Menu 1
>_
+22dBu
OK
+22dBu
OK
Replace
PMPEG L2 24K 1B
OK
PMEG L2 24K 1B
G722 SRT
4SB ADPCM 2B
Other
CODING ALGORITHM
P-MPEG L2
MPEG L2 J52
P-MPEG L2
G711 (phone)
G722 H242
G722
OK
4SB ADPCM
TDAC
SRT
H221
SETUP ISDN
Audio Cod
LDN
AUDIO
Max Input lvl
>_
ADDRESS
Sub-Address
AUDIO
Max Output lvl
Replace
ADDRESS
Local number
SPID
PARAMETERS
Address
Net
ERROR CORRECTION
Mode 0
Mode 0
Mode 1
Mode 2
Mode 3
SAMPLING RATE
48 kHz
48 kHz
32 kHz
24 kHz
16 kHz
BIT RATE
64 kb/s (1B)
64 kb/s (1B)
128 kb/s (2B)
Menu 3
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+22dBu
OK
+2dBu
OK
DIAL TONE
Detect
Undetect
DIALING METHOD
Tone
Pulse
AUDIO
Max Input lvl
PARAMETERS
Dial tone
PARAMETERS
Clock mode
CLOCK MODE
Standard
Free
SETUP ANALOG
Net Audio Cod
PARAMETERS
Dialing method
AUDIO
Max Output lvl
Menu 3
NETWORK : ANALOG
ToISDN
Param
Menu 1
SPEED
Fixed
SECURED MODE
P0
P1
P2
Auto
MAX LINE SPEED
24 Kb/s
24 Kb/s
21.6 Kb/s
19.2 Kb/s
16.8 Kb/s
14.4 Kb/s
12 Kb/s
0dBm
-3dBm
-6dBm
-9dBm
-10dBm
-16dBm
-10dBm
OK
PARAMETERS
Ligne level
AUTO 24Kb/s P0
OK
AUTO 24Kb/s P0
AUTO 12Kb/s P1
FIX 16.8Kb/s P2
Other
ANALOG MODE
Codec
Hybrid
PARAMETERS
Analog mode
Menu 4
7. How to Set-Up Profiles on the Scoop Studio
You can access and edit memory locations and Profiles directly from the front panel
keypad and menus of the Scoop Studio. The Scoop Studio has the ability to allow you to
pre-program the 100 Profile locations.
7.1.
What is a profile ?
A profile is a non-volatile, pre-programmed memory location stored within the
Scoop Studio which functions very similar to the auto dial memory locations on an
average telephone.
A remote profile can contain an ISDN or POTS number with specific parameters
associated with that number. The remote profile can contain the name of the location
to be dialled and its specific algorithm. You can create up to 50 unique remote
profiles on the Scoop Studio. If the remote profile is an ISDN type, you can have two
numbers stored ( one number for each B channel ).
A local profile ( named local setup for making the difference ) can contain ISDN
or POTS local parameters. The local setup can contain the name and all network
parameters like local address in ISDN. You can create up to 50 local setups on the
Scoop Studio
7.2.
How to manage profiles on the Scoop Studio
Note: All remote profile can be a POTS profile or an ISDN profile.
7.2.1. How to manage remote Profiles
From the Main Function Menu, select “DIRECTORY” symbol, and press the key under
it. After having selected “REMOTE” choice, you can select different actions :
-
“Load” for loading in memory a profile.
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-
“Delete” for deleting a profile.
-
“Edit” for looking each elements of the profile.
-
“New” for creating a new profile.
“Load”
With the left and right extended display key, you can scroll the remote profiles. If you
enter a letter on the keypad, the profile list scroll to the profile whose the name begin
with this letter.
With the centre extended display key, you scroll each profile items.
For calling with the display profile, you have just to press the “green phone” key.
For loading in memory the profiles, press the “OK” key.
“Delete”
With the left and right extended display key, you can scroll the remote profiles. If you
enter a letter on the keypad, the profile list scroll to the profile whose the name begin
with this letter.
With the centre extended display key, you delete the display profile
“Edit”
With the left and right extended display key, you can scroll the remote profiles. If you
enter a letter on the keypad, the profile list scroll to the profile whose the name begin
with this letter.
With the centre extended display key, you scroll each profile items.
Press “OK” key to modify one or many items of the display profile.
“New”
At first you should select the network : Analogue/POTS or ISDN.
After that, you have the choice to associate an algorithm ( current algorithm
configuration) or not to your profile. If you don’t associate an algorithm to your profile,
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when you will make a call with this profile, Scoop Studio will use the current algorithm
configuration.
The next stage is to enter a name for your profile, and press “OK” to valid.
Now, Scoop Studio ask the user to enter one or two numbers ( depend of algorithm
configuration ). If you don’t enter numbers, when you will make a call with this profile,
Scoop Studio will ask you to enter the numbers.
7.2.2. How to manage local setups
From the Main Function Menu, select “DIRECTORY” symbol, and press the key under
it. After having selected “LOCAL” choice, you can select different actions :
-
“Load” for loading in memory a local setup.
-
“Save as” for creating a new local setup.
-
“Delete” for deleting a local setup.
In a local setup memory we save the current network configuration.
For example : If you are in ISDN, we save the ISDN protocol, the local address and the
local sub-address.
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8. Connecting 2 SCOOP STUDIO.
Note: The following is valid for both POTS and ISDN mode.
Warning: In ISDN mode with some PBX’s, you must enter your local number and
your SPID number prior making a call.
8.1. Initiating a call
There are 3 ways to initiate a call :
ƒ Dialing with a profile
ƒ Direct Dialing
ƒ Re-dialing the previous number.
8.1.1. Dialling Using a Profile Number
From the Main Function Menu, select “DIRECTORY” symbol, and press
the key under it. After having selected “REMOTE” choice, press the key
under “Load”.
Note : You arrive directly in the remote profile list, when you enter a letter
under the main menu.
Select the profile number and press “Green phone” key.
"Call XXXXXXXX" appears on the screen and is dialed automatically.
8.1.2. Direct Dialling
Enter the telephone number and press the “green phone“ key. If you call
two numbers ( In ISDN ), you need to press again the same key.
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Note : In the case that you have 2 numbers, if you don’t enter the second
number, we call twice the first number.
A message to indicate that the call is in progress is displayed on the
screen.
Note :
- The number length is limited to 23 digits and may be displayed on 2
lines.
- Insert a “*” between number and sub-number in ISDN mode.
- Insert a “*” for wait in POTS mode
8.1.3. Re-Dialling the Previous Number
From the main menu, press “green phone” key, The last called number
appears on the screen, press again the “green phone” key. Actually, your
are in a short list of the five last called numbers.
"Call in progress" along with the redialed number is displayed on the
screen.
Note : We don’t re-load configuration, we use the last configuration used
( current now).
Note :
In case of mistake you may come back at the beginning of the menu by
pressing the "Esc" key.
Note :
As soon as the local and remote Scoop Studio are connected, the
CONNECT result code is displayed.
If a connection can not be established, the NO CARRIER result code will
be displayed.
The bit rate is displayed in POTS mode.
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8.2. Disconnecting a call
To end a call press the "red phone" key.
"Wait..." is displayed, after awhile, the Scoop Studio is reset and ready for the next call.
The main menu appears on the screen.
8.3. Auto Answering
As soon as the "Power On Initialization" phase is completed, the Scoop Studio is ready
to receive an ISDN call or a POTS call. You have just to adjust the levels in such a way
that the audio level green and yellow LED's indicate a normal operating range.
When a call is received the Scoop Studio will recognize ISDN or POTS and establish a
connection. Adjust your headphone level and your local feed back with the local/return
mix balance if needed.
Then the Scoop Studio is ready for full duplex audio communication.
8.4. Entering local Numbers
From the Main Function Menu, go to “SETUP”, “NET”,”PARAM”. Using the down
arrow key scroll right to "Address" screen. Press the center key to enter in address
configuration
You have two address configuration with each sub-address. You have a specific address
and sub-address for each B ISDN channel.
A series of AT commands will be displayed and automatically return you to the main
menu
Note : In many cases, the sub-address is not necessary.
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8.5. Entering SPID Numbers ( USA )
In the USA, some ISDN circuits require two SPID numbers and two LDN ( Local
directory number ), one SPID for each B channel, in addition to the local dialing number.
The Scoop Studio can be manually programmed using the keypad.
From the Main Function Menu, go to “SETUP”, “NET”,”PARAM”. Using the down
arrow key scroll right to "Address" screen. Press the center key to enter in address
configuration
Note :
- You should enter SPID 1 and LDN 1 local number and before SPID 2 number and
LDN 2
- Generally, the LDN is the 4 last digits of the SPID number.
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9. POTS Information
9.1. Factory default configuration
The Scoop's factory-set default configuration is suitable for most Scoop Studio
transmission applications and are reloaded by the selected function :
“TOOLS”, “Misc”, ”General reset”.
Your Scoop Studio is designed to operate over dial-up phone circuits with the following
dialling and call monitor features :
ƒ Multi-frequency signalling (Tone dialling method) or
Loop-disconnect signalling (Pulse dialling method)
Rem
:
By issuing the configuration procedure the user can change the
<dialling method> : Pulse or Tone
The selection of the dialling method will be stored until the user has to modify his
choice again even when the Scoop Studio is power off.
ƒ Operation in the absence of proceed operation (waiting for dial tone)
ƒ Automatic answering
ƒ Originating and answering handshake negotiations begin at the highest DCE line
speed configured in the factory (24 kbps) or at lower speed selected by the menu
with the current configuration.
Automatic speed selection : Handshake negotiations fall back to a lower speed if
necessary.
ƒ Full dial progress detection ( Dial tone detect).
Rem :This parameter must be "disable" for calls originated from Switzerland and
Italy.
Additional setting
ƒ Fall back if negotiation fails at the highest speed ( speed automatic )
ƒ Maximum DCE Line speed = 24000 bps. (Default Config.)
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9.2. POTS modes
9.2.1. Phone / Codec Mode
The telephone mode or the codec mode is selected by the menu “ANALOG MODE”. If
you select Hybrid parameter, you select the phone mode.
The change of the initial mode can’t be done during the communication.
When the high speed connection is broken the Scoop Studio doesn't fall back to the
regular POTS mode (3.4 kHz). The voice communication is interrupted and a new call
has to be made.
9.3. Network parameters
9.3.1. Setting the optimal rate
The Scoop Studio with the lowest max line speed setting will determine the maximum
connect rate.
a)
When the speed mode function is set on "Automatic" adaptation ( general reset
Configuration. ) both modems will negotiate the highest transmission rate according
to the quality of their current respective networks.
This rate is also limited at the lowest speed of the two max speed selected on the 2
units.
If the line quality is changing during the audio-transmission the modems will try to
adapt consequently the data rate by fall back at a lower data rate and fall forward to
the higher selected speed. During each re-negotiation the audio signal may be
interrupted. If these "break down" appear, it is highly recommended to set the max
line speed selection of one of the Scoop Studio at one level or two below the used
connect rate.
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b) When the speed function is set on "Fixed" at ONE of the both Scoop Studio unit, the
2 modems will be allowed to negotiate at only the lowest speed of the two max
speeds selected.
They will neither "fall forward" nor "fall back".
If this select speed is too high for the possibility of one of the local network
capacity, the modem will "NOT CONNECT" and a lower has to be selected by the
user to obtain a solid connection at a reliable data rate.
Rem : By setting Speed fixed, the user has the ability to select the max/min connect rate
for the modems before a call is placed. So the fall back to a lower speed cannot
occur during the communication.
9.3.2. Clock Mode
For long distance transmission, it is better to set on free this parameter. The reason is
: in this mode, each modem generates the transmit clock and generate receive clock from
receive carrier signal. In this case, each way is separated.
In standard mode, each modem works with only one clock. The local Scoop Studio
generate the clock and the remote generate its clock from receive carrier signal.
9.3.3. Line level
The phone line level depending of country where you are. You can adjust the phone
line level between 0dBm to –16dBm. The most popular level is –10dBm ( default value
).
9.4. Error protection
This function reduces the short and occasional transmission errors causing glitches and
drop-out in the audio. Those errors can be founded particularly on long distance circuits
and when connected to an in-house phone systems.
The audio quality could be slightly affected.
The user will only hear a short additional delay.
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9.4.1. Secured modes
Three protection modes are available :
Protected 0 ( Unprotected ) is set by default ( Factory Configuration )
•
Is compatible with all Scoop Studio units.
•
Keep the smallest transmission delay ( coding : decoding ) of 80 ms.
Protected 1
Ought to be selected manually and recovers errors of 100 ms.
Protected 2
Ought to be selected manually and recovers errors of 250 ms.
Delay :
Protection 24K
\ Data
rate
21.6K
19.2K
16.8K
14.4K
12K
Coding
Test
P0
88ms
90ms
105ms
114ms
131ms
138ms
55.5ms
P1
293ms
320ms
348ms
394ms
456ms
535ms
255ms
P2
581ms
647ms
723ms
823ms
961ms
1146ms
553ms
Note : If errors still exist in protected mode 2, set the max line speed at the next lower
speed.
Caution : The
same protection level configuration must be
selected at the both end units.
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10. Troubleshooting
Network Indication:
- Alarm (red)
When “on” indicates a network problem.
Check your network.
- Dec (green)
When "on" indicates that the signal is decoded by the Scoop
Studio.
Unable to establish a connection:
Check the RJ connection between the Scoop Studio and the telephone network. (RJ 11,
identified as Tel on the rear panel of Scoop Studio for POTS, and RJ45, identified as
ISDN on the rear panel of the Scoop Studio for ISDN)
Connection In ISDN mode
To test your ISDN line, you may connect an ISDN phone or other suitable ISDN
verification device into the RJ45 connector instead of the Scoop Studio and call an ISDN
number to verify a working ISDN line. Check the ISDN protocol, check the number, and
check appropriate setting if going through a PBX.
Connection In POTS mode
To test your POTS line, you may connect a normal phone to the wall connector instead
of the Scoop Studio unit and call a normal phone number. Check for proper POTS line
settings: Dialing method, " Pulse/Tone", dial tone "Detect/Undetected". Check proper
setting if going through a PBX ( you may need to dial to get an outside line, Ex 9* ).
If the Scoop Studio disconnects while on-line, check for loose connections between the
Scoop Studio and the telephone connection. Line noise or interference may be interfering
with the modem signals. Retry the connection by dialing the number again.
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11. Tests
11.1. Audio section testing
1- Analogue section test
a ) Connect an audio signal to one of the audio inputs. That signal is available on the
headphones (Potentiometer turns that feedback feature off when fully counterclockwise).
b ) Select the menu < TOOLS > , < MAINTENANCE > , < Test > : AD/DA
Loop.
The test is OK if you get the audio signal either on the headphones, or
Aux. Out.
To end the test go back to the test menu, disable the AD/DA Loop by
pressing the “none” choice ( The star appears on None configuration).
2- Digital and analogue parts
The encoder may be connected to the decoder locally to test digital circuits.
Connect and select an audio signal to any of the inputs.
Select the menu < TOOLS > , < MAINTENANCE > , < Test > : Coding test.
The message "Coding process" appears on the screen.
The test is OK if you get the audio signal either on the headphones, or
Aux. Out.
To end the test press the "Esc" key, wait signal “……” is displayed on
the screen, then the unit returns to standby.
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11.2. Network test
These allows checking the network and the remote codec.
1- The unit can be configured to loop back to the network the received data.
Select the main menu < TOOLS > , < MAINTENANCE > , < Test > : Loop 2 Network.
The loop is enabled as soon as the unit is connected.
2- The unit can be configured to loop back to the network the sent data.
Select the main menu < TOOLS > , < MAINTENANCE > , < Test > : Loop 3 codec.
The loop is enabled as soon as the unit is connected.
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12. ISDN modem information
12.1. ISDN Protocols
ISDN modem supports worldwide ISDN signaling (CCITT I.430, Q.921, Q.931) for
voice/audio and data including the following network operator variants :
With USA software
• AT&T 5E5, 5E9, 5E10
• Northern Telecom (DMS-100),
• National ISDN-1 and 2 (North America),
•
•
•
•
•
With other countries software
France Telecom EuroNumeris (Vnx) with supplementary services,
Deutsche Telekom 1TR6 and EuroISDN,
NTT INS-64 (Japan),
KDD ISDN (Japan),
Telecom Australia Austel TS-013,
• All EuroISDN carriers (Austria, Denmark, Holland, Ireland, Italy,
Norway, Portugal, Spain, Switzerland, United Kingdom,...).
12.2. ISDN CLEARING CAUSES
The following table lists the call clearing causes (returned for example in a
CLEARED: message). Call clearing cause is in hexadecimal. Message meaning
are given for an ETSI ISDN. Causes with values greater than 80 hex are
generated internally.
Example : CLEARED 18: 12 means for the 18 reference system call
there are no user responding.
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01
unallocated (unassigned) number
02
no route to specified transit network
03
no route to destination
06
channel unacceptable
07
call awarded and being delivered in an established channel
10
normal call clearing
11
user busy
12
no user responding
13
no answer from user (user alerted)
15
call rejected
16
number changed
1A
non-selected user clearing
1B
destination out of order
1C
invalid number format
1D
facility rejected
1E
response to STATUS ENQUIRY
1F
normal, unspecified
22
no circuit/channel available
26
network out of order
29
temporary failure
2A
switching equipment congestion
2B
access information discarded
2C
requested circuit/channel not available
2F
resources unavailable, unspecified
31
quality of service unavailable
32
requested facility not subscribed
39
bearer capability not authorized
3A
bearer capability not presently available
3F
service or option not available, unspecified
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41
bearer capability not implemented
42
channel type not implemented
45
requested facility not implemented
46
only restricted digital information bearer capability is available
4F
service or option not implemented, unspecified
51
invalid call reference value
52
identified channel does not exist
53
a suspended call exists, but this call identity does not
54
call identity in use
55
no call suspended
56
call having the requested call identity has been cleared
58
incompatible destination
5B
invalid transit network selection
5F
invalid message, unspecified
60
mandatory information element is missing
61
message type non-existent or not implemented
62
message not compatible with call state or message type non-existent
or not
or not implemented
63
information element non-existent or not implemented
64
invalid information element contents
65
message not compatible with call state
66
recovery on timer expiry
6F
protocol error, unspecified
7F
interworking, unspecified
91
no signaling data link establishment
A2
no line activation
FF
call clearing, unspecified
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13. How to open a SCOOP STUDIO ready for
servicing
Tools required:
Philips Screw Driver (medium-sized)
The Scoop Studio will be now separated into three Sections :
1) The top metal panel
2) The casing lid
Steps :
-
Switch to off Scoop Studio
Remove the external mains power cable if you use it
Undo screws at the top
Remove the top panel
Now, you have access to all internal boards.
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14. Connectors layout
14.1. Remote Connector
This interface uses a 9-pin female Sub-D connector on the rear panel. This is a
V24/RS-232 type interface with only Tx and Rx signals (no flow control). The
following table indicates its pin out (DCE type pin out)
Pin
2
3
7
8
5
Description
TX , To the PC
RX, From the PC
CTS, From the PC
RTS , To the PC
Signal ground
14.2. AUX Connector
Pin
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
Name
DGND
STOR1STOR1+
STOR2STOR2+
STOR3STOR3+
N.C.
+5V
ETOR1ETOR1+
ETOR2ETOR2+
ETOR3ETOR3+
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Description
Ground
Relay 1
Relay 2
Relay 3
Power
Opto 1
Opto 2
Opto 3
Function and remarks
Direction
Relay contact 1
Corresponds to “INFO 1”
Relay contact 2
Corresponds to “INFO 2”
Decoder status;
follows the status of the “DEC” LED.
O
Opto input 1
choose resistor to allow for 10 to 20mA
Opto input 2
choose resistor to allow for 10 to 20mA
Not used
I
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O
O
I
I
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March 2006
Remarks:
•
•
•
Direction: I = input, O = output
Relay/Opto 1 and relay / Opto 2 are the transparent contacts (relay
transmission)
Relays and opto inputs are bi-directional, i.e. the polarity does not care
Input loop control current : 6mA ( max 100mA )
Resistance of input loop : 470Ohms ( current limiting series resistor )
Maximum switching voltage ( output ) : 400V peak
Maximum switching current ( output ) : 250mA
Resistance of output loop : 8 Ohms Max
A +5V power supply is available on the connector, with 100mA capacity, witch
can be used e.g. to power the input loops.
A +5V or +12V source may be connected directly on an input loop, because the
internal series resistor is dimensioned for this purpose. For a higher voltage
source, it may be necessary to limit the input current.
14.3. POTS Interface
The telephone network connection on Scoop Studio is a RJ 11 connector. ( Labeled
Analog )
Connector :
Pin
1
2
3
4
40
Description
TIP
RING
-
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Impedance adaptation ( Internal rear panel switches ):
Country
RZDC
ZZNT
US
8.2 Ω
600 Ω
CTR-21
22.1 Ω
600 Ω//0.0047µF
Country \ Switch
US
CTR-21
1
ON
OFF
2
OFF
ON
14.4. ISDN Interface Network
The ISDN connector is an RJ45 – 4 wires into 8 wires.
S0/T0 Network:
Pin
1
2
3
4
5
6
7
8
Description
N.C.
N.C.
TX A, To the network
RX A, From the network
RX B, From the network
TX , To the network
N.C.
N.C.
Pin
1
2
3
4
5
6
7
8
N.C.
N.C.
N.C.
RING
TIP
N.C.
N.C.
N.C.
U0 NETWORK:
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14.5. External DC connector
Pin 1 : Minus
Pin 4 : Plus
14.6. Environment
Operating temp. Range:
Humidity:
Storage temp. :
Dimensions:
Weight:
42
0°C to 45°C ( 41°F to 113°F )
0 to 90% non -condensing
- 20°C to 60°C ( -4°F to 140°F )
(D x W x H) 270 x 482 x 45 mm
3.43 kg,
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