ET100 User Manual

ET100 User Manual
USER MANUAL
ET100
Synchronous WAN Ethernet Bridge
10/100Base-TX Ethernet over
V.35, X.21, RS-232/530/449
CTC Union Technologies Co., Ltd.
NeiHu Hi- Tech Park
9F, No. 60 ZhouZi St.
NeiHu, Taipei, 114
Taiwan
ET100 Ethernet WAN Bridge, User Manual
Version 1.0 June 2003 Release
This manual supports the following models:
ET100 Ethernet WAN Bridge
All specifications subject to change without notice.
Table of Contents
Overview and Features ………………………………………….. 1
Specifications …………………………………………………… 2
Functional Block Diagram ……………………………………… 3
Unit Detail ………………………………………………………. 4
Theory of Operation …………………………………………….. 7
DIP Switch Setting Tables ……………………………………… 10
RS-232 I/F Pin Assignment …………………………………….. 13
V.35 I/F Pin Assignment ………………………………………... 14
RS-530/449 I/F Pin Assignment ………………………………... 15
X.21 I/F Pin Assignment ………………………………….…….. 16
RS-530(232) Cable Pin Out ……………………………………... 17
V.35 Cable Pin Out ……………………………………………… 18
RS-449 Cable Pin Out …………………………………………... 19
X.21 Cable Pin Out ……………………………………………... 20
Sync Mode Clock Settings ……………………………………… 21
Application Examples …………………………………………... 22
Technical Inquiry Form …………………………………………. 25
i
Table of Contents
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ii
ET100 LAN-WAN Bridge
Overview
The ET100 Network Bridge is a high performance, remote,
self- learning Ethernet bridge. Its compact size and low cost make it
ideal for cost-sensitive bridging applications, or as a LAN extender or
segmenter over bit stream type infrastructures. Several selectable data
interfaces, including V.35, RS-530, RS-449, X.21, and RS-232, make
this Ethernet Bridge's connection between 10Base-T and 100Base-TX
LAN and various SYNC data port interfaces convenient.
Features
n
10BASE-T/100BASE-TX, Full Duplex or Half Duplex
n
HP Auto-MDI/MDIX detects and corrects crossed cable
n
IEEE 802.3x flow control
n
Real-time filtering with 256 address tables
n
Automatic address learning, aging and deletion after 5 minutes
n
Up to 340 packet-buffering capacity
n
Forwarding and filtering rate at wire speed with through put latency of 1
frame.
n
Auto padding of undersized packets to meet the minimum Ethernet
packet size requirement
n
Buffering modes can be selected according to the setting of WAN and
LAN line speeds
n
Ethernet interface has automatic Twisted Pair polarity correction
n
Built-in nx64K / nx56K timing clock generator for WAN link
n
Configurable WAN side Tx clock rising / falling clock edge operation
1
ET100 LAN-WAN Bridge
Specifications
n
LAN
Standard
Connector
Speeds
Frames
n
WAN
Interface
Protocol
Connector
Type
Data Rates
Clock Source
n
Fully compliant with IEEE 802.3/802.3u
Shielded RJ-45
10BASE-T/100BASE-TX, Full or Half Duplex
Supports 64 to 1522 byte packet lengths, standard
and extended length frames for VLAN tagging, etc.
Selectable RS-232(SYNC), V.35, RS-449/530, and
X.21
Synchronous HDLC
DB25 Male
DTE port
n x 64(56)Kbps, up to 2048Kbps
Tx/Rx internal or external
General
Power
Environment
Dimensions
Weight
AC Adapter; 100, 110, or 230VAC / 9VDC-1A
Unit; DC9~12V/300mA
o
Temperature: 0~50 C
Humidity: <90% non-condensing
135(L) x 80(W) x 25(H) mm
150g
§ LEDWANINDICATORS
Rx (yellow)
WAN Tx (yellow)
Link (green)
LAN Rx (yellow)
LAN Tx (yellow)
PWR (green)
Error (red)
Full (yellow)
100M (yellow)
ON=WAN receive data
ON=WAN transmit data
ON=LAN link
ON=LAN receive data
ON=LAN transmit data
ON=Power On
ON=LAN error
ON=Full Duplex
ON=100BASE-TX
2
ET100 LAN-WAN Bridge
WAN SIDE
DB25-Male
DTE
Interface
Select
RS-530/449
V.35
X.21
RS-232
Serial Port
Line Drivers
WAN Tx LED
WAN Rx LED
SYNC
HDLC
CONTROLLER
Clock
Source
Ext. clock
Int. clock
Clock
Generator
FILTER
ENGINE
plus 256 MAC Address Table
Full
100
Error
SYNC
SPEED
N56K to
1792K
N64K to
2048K
340 Frame Buffer
Full Duplex
Half Duplex
Link LED
LAN Tx LED
LAN Rx LED
IEEE802.3u I/F
Cable Crossover Switch
LAN Link LED
LAN SIDE
RJ-45
Figure 1: ET100 Functional Block Diagram
3
ET100 LAN-WAN Bridge
Unit Detail
1
2
3
4
6
15
5
14
13
12
8
11
7
10
9
Figure 2. ET100 Unit Detail
4
ET100 LAN-WAN Bridge
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
WAN Rx LED:
Yellow, on or flashing indicates receiving data on the WAN
interface.
WAN Tx LED:
Yellow, on or flashing indicates transmitting data on the WAN
interface.
LAN Link LED:
Green, indicates the Ethernet has a link to an external device.
LAN Rx LED:
Yellow, flashes to indicate reception from the LAN.
LAN Tx LED:
Yellow, flashes to indicate transmission to the LAN.
DB25 Male Connector:
This connector connects to the appropriate adapter cable for
connection to the various supported data interfaces. The ET100
performs in DTE mode and its WAN port connector may be
connected to a DCE device (such as a modem).
SW1:
Configuration setting for the bridge. (Please refer to DIP SW
setting table.) Connection to the Ethernet LAN is made here.
SW2:
Configuration setting for the bridge. (Please refer to DIP SW
setting table.) Connection to the Ethernet LAN is made here.
RJ-45 Ethernet LAN Port:
This is an auto-MDI/MDIX port for connection to the LAN.
5
ET100 LAN-WAN Bridge
(10) LAN Cable Cross Over Switch:
When this pushbutton switch is pressed, the LAN port of the
ET100 can connect to a PC directly; when released, the LAN port
of ET100 can connect to a HUB directly (using a 1:1 UTP cable).
This feature is useful in the event a device cannot get a link using
the auto MDI/MDIX function.
(11) 100M LED:
Yellow on, indicates the LAN connection is 100Base-TX Ethernet.
Off indicates 10Base-T Ethernet.
(12) Full LED:
Yellow on, lights to indicate a Full Duplex Ethernet connection.
Off indicates half duplex Ethernet operation.
(13) Error LED:
Red on, indicates an error has occurred in ET100, for instance a
buffer overrun or underrun.
(14) DC 9~12V
This jack receives power from the external DC 9~12V AC power
adapter.
(15) PWR LED
Green on, when external power adapter is plugged in and AC
power is supplied to it.
6
ET100 LAN-WAN Bridge
Theory of Operation
A bridge is used to connect networks locally or remotely such that they
appear to the user to be the same network. An Ethernet LAN bridge will
connect two LAN segments at the Data Link Layer (ISO Layer 2). At
this layer, the MAC (Media Access Control) addresses, are used for low
level addressing to send information to devices. The bridge builds
tables of MAC addresses for each network segment based on the source
and destination addresses of the packets it receives and forwards, then
filters the traffic not destined for the remote network.
The Ethernet-WAN bridge will connect two remote Ethernet networks
over bit stream interfaces such as that of modems or DSU/CSUs. One
method to do this is to use HDLC, an international standard set by the
ISO, a set of protocols for carrying data over a link with error and flow
control.
The ET100 utilizes both Ethernet Bridging and HDLC encapsulation
to provide a connection between LANs over bit stream architectures.
The LAN side of the ET100 receives an Ethernet packet and examines
its destination MAC address. If it knows the MAC is on the local
network then it simply drops the packet. Otherwise, if it knows the
packet destination is on the remote side, or if it cannot be determined
because its MAC cannot be found in the table, then it forwards it.
During forwarding, the packet is processed for transmission across the
WAN link. Here is where the Ethernet packet in encapsulated in HDLC.
7
ET100 LAN-WAN Bridge
When the HDLC packet is received on the remote side unit's data port,
The packet is checked for transmission errors, then the original
Ethernet packet(s) is recovered and sent out the remote's LAN port
completing the transmission. Here is the typical application of the
ET100.
Typical application of ET100 LAN-WAN Bridge.
Many times the ET100 is commonly referred to as an Ethernet to V.35,
Ethernet to X.21, or Ethernet to Datacom 'converter'. As a
sales/marketing term or non-technical reference, the term is OK.
However, from a technical standpoint, the term is a misnomer. The
Ethernet is not "converted" to V.35, it is run "over" the V.35 link.
Conversion also implies that the interface can work both ways. This is
NOT the case for the LAN-WAN Bridge as the following application
shows.
Application NOT ALLOWED for ET100.
8
ET100 LAN-WAN Bridge
Why does the previous application not work? Because, the application
requires a bit stream to be encapsulated into Ethernet packets, or into
TCP/IP and then Ethernet, for transmission across the LAN. This
requires more than just manipulation at the Data Link layer (ISO Layer
2), it requires programming to include all seven layers including the
Application layer. Transmitting bit stream or TDM (time division
multiplexed) data over Ethernet requires a device such as an IP-MUX.
Please refer to the "Applications" section at the end of this manual for
additional application examples.
9
ET100 LAN-WAN Bridge
DIP Switch Setting Tables:
When the ET100 is set to internal WAN clock, SW1-1 to SW1-6
configure the data rate. If WAN Tclk and Rckl are external, don't care.
SW1-1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
SW1-2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
SW1-3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
DATA RATE
SW1-4 SW1-5
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
SW1-6 ON
56K(1*56K)
112K(2*56K)
168K(3*56K)
224K(4*56K)
280K(5*56K)
336K(6*56K)
392K(7*56K)
448K(8*56K)
504K(9*56K)
560K(10*56K)
616K(11*56K)
672K(12*56K)
728K(13*56K)
784K(14*56K)
840K(15*56K)
896K(16*56K)
952K(17*56K)
1008K(18*56K)
1064K(19*56K)
1120K(20*56K)
1176K(21*56K)
1232K(22*56K)
1288K(23*56K)
1344K(24*56K)
1400K(25*56K)
1456K(26*56K)
1512K(27*56K)
1544K
1544K
1544K
1544K
1544K
Table 1: DIP settings for Data Rate.
10
SW1-6 OFF
64K(1*64K)
128K(2*64K)
192K(3*64K)
256K(4*64K)
320K(5*64K)
384K(6*64K)
448K(7*64K)
512K(8*64K)
576K(9*64K)
640K(10*64K)
704K(11*64K)
768K(12*64K)
832K(13*64K)
896K(14*64K)
960K(15*64K)
1024K(16*64K)
1088K(17*64K)
1152K(18*64K)
1216K(19*64K)
1280K(20*64K)
1344K(21*64K)
1408K(22*64K)
1472K(23*64K)
1536K(24*64K)
1600K(25*64K)
1664K(26*64K)
1728K(27*64K)
1792K(28*64K)
1856K(29*64K)
1920K(30*64K)
1984K(31*64K)
2048K(32*64K)
ET100 LAN-WAN Bridge
DIP SW1
-7
-8
STATE
OFF
ON
OFF
ON
FUNCTION
WAN TCLK: External
WAN TCLK: Internal
WAN RCLK: External
WAN RCLK: Internal
REMARK
Table 2: DIP settings for clock source.
DIP SW1
-9
STATE
OFF
ON
FUNCTION
WAN Port is always in sync
WAN Port is sync if DCD active
REMARK
Table 3: WAN Port SYNC Status
SW2-1
OFF
ON
OFF
ON
SW2-2
OFF
OFF
ON
ON
WAN INTERFACE
TYPE
RS-449/RS-530
X.21
V.35
RS-232
Table 4: WAN interface type settings.
DIP SW2
-3
-4
-5
-6
-7
-8
-9
STATE
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
FUNCTION
Filter Enable (Bridge mode)
Filter Disable (transparent forwarding)
Disable 802.3x flow control
Enable 802.3x flow control
LAN auto-negotiation is enabled
LAN auto-negotiation is disabled
Ethernet Full Duplex
Ethernet Half Duplex
100Base-TX Ethernet speed
10Base-T Ethernet speed
LAN to WAN = WAN to LAN (1:1)
LAN to WAN > WAN to LAN (9:1)
WAN Tx clock polarity normal
WAN Tx clock polarity inverted
Table 5: Miscellaneous settings
11
REMARK
ignore 6,7
(pkt. buffer)
ET100 LAN-WAN Bridge
When the ET100 leaves the factory, all DIP switch settings are set to
the OFF position.
Filter:
When this feature is disabled, all frames are passed transparently.
In this configuration, the ET100 acts as a repeater. When the filter is
enabled, frame destinations are tested against the internal MAC address
table. Filtering enabled is the normal selection for Bridging.
Auto-negotiation:
When this feature is enabled (SW2-5=OFF), the Duplex (SW2-6)
and Speed (SW2-7) settings are ignored and are automatically
determined from the LAN connection. When this feature is disabled,
the Duplex and Speed settings of the LAN follow the settings of SW2-6
and SW2-7.
Packet Buffer Utilization:
The ET100 contains a 340 packet buffering capacity. When
SW2-8 is OFF, this buffer is divided equally between LAN to WAN and
WAN to LAN packet traffic. When the LAN is Fast Ethernet and the
WAN connection is slow, the buffer may be better utilized by applying a
greater portion to the LAN to WAN packet traffic. In this case, set
SW2-8 to ON. This will provide a 9 to 1 buffer division for LAN to
WAN versus WAN to LAN buffer and should increase utilization.
12
ET100 LAN-WAN Bridge
WAN Port Pin Assignment
The following tables give the pin, circuit, function and signal
direction as seen on the ET100's DB25M connector for each of the
selectable interfaces. RS-232 and RS-530 connections may be
made directly. Adapter cables are required to match the physical
connectors for V.35 (MB34), X.21 (DB15) and RS-449 (DB37).
a. V.24/RS-232 INTERFACE PIN ASSIGNMENT
PIN
CIRCUIT
FUNCTION
DIRECTION
EIA
1
2
3
4
5
6
7
8
15
17
20
24
FGND
Protective GND
TD
Transmit data
OUT
RD
Receive data
IN
RTS
Request to send
OUT
CTS
Clear to send
IN
DSR
Data set ready
IN
GND
Signal ground
DCD
Carrier detect
IN
TC
Transmit clock
IN
RC
Receive clock
IN
DTR
Data term ready
OUT
XTC
DTE xmit clock
OUT
Table 7: RS-232 Interface Pin Assignment
SW2-1/2-2 ON/ON
AA
BA
BB
CA
CB
CC
AB
CF
DB
DD
CD
DA
13
ET100 LAN-WAN Bridge
b. V.35 INTERFACE PIN ASSIGNMENT
PIN
CIRCUIT
1
2
3
4
5
6
7
8
9
11
12
14
15
16
17
20
24
FGND
Protective GND
TD(A)
Xmit data A
OUT
RD(A)
Receive data A
IN
RTS
Request to send
OUT
CTS
Clear to send
IN
DSR
Data set ready
IN
GND
Signal ground
DCD
Data carrier detect
IN
RC(B)
Receive clock B
IN
XTC(B)
DTE Xmit clock B
OUT
TC(B)
Xmit clock B
IN
TD(B)
Xmit data B
OUT
TC(A)
Xmit clock A
IN
RD(B)
Receive data B
IN
RC(A)
Receive clock A
IN
DTR
Data terminal ready
OUT
XTC(A)
DTE Xmit clock A
OUT
Table 8: V.35 Interface Pin Assignment
SW2-1/2-2 OFF/ON
FUNCTION
14
DIRECTION
CCITT
101
103
104
105
106
107
102
109
115
113
114
103
114
104
115
108
113
ET100 LAN-WAN Bridge
c. RS-449/RS-530 INTERFACE PIN ASSIGNMENT
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
20
22
23
24
CIRCUIT
FUNCTION
DIRECTION
CCITT
FGND
Protective GND
101
SD(A)
Xmit data A
OUT
103
RD(A)
Receive data A
IN
104
RS(A)
Request to send A
OUT
105
CS(A)
Clear to send A
IN
106
DM(A)
Data set ready A
IN
107
GND
Signal ground
102
RR(A)
Data carrier detect A
IN
109
RT(B)
Receive clock B
IN
115
RR(B)
Data carrier detect B
IN
109
TT(B)
DTE Xmit clock B
OUT
113
ST(B)
Xmit clock B
IN
114
CS(B)
Clear to send B
IN
106
SD(B)
Xmit data B
OUT
103
ST(A)
Xmit clock A
IN
114
RD(B)
Receive data B
IN
104
RT(A)
Receive clock A
IN
115
RS(B)
Request to send B
OUT
105
TR(A)
Data terminal ready A
OUT
108
DM(B)
Data set ready B
IN
107
TR(B)
Data terminal ready B
OUT
108
TT(A)
DTE Xmit clock A
OUT
113
Table 9: RS-449/RS-530 INTERFACE PIN ASSIGNMENT
SW2-1/2-2 OFF/OFF
15
ET100 LAN-WAN Bridge
d. X.21 INTERFACE PIN ASSIGNMENT
PIN
1
2
3
4
7
8
9
10
14
16
17
19
CIRCUIT
FUNCTION
DIRECTION
CCITT
FGND
Protective GND
101
T(A)
Xmit data A
OUT
103
R(A)
Receive data A
IN
104
C(A)
Request to send A
OUT
105
GND
Signal ground
102
I(A)
Data carrier detect A
IN
109
S(B)
Receive clock B
IN
115
I(B)
Data carrier detect B
IN
109
T(B)
Xmit data B
OUT
103
R(B)
Receive data B
IN
104
S(A)
Receive clock A
IN
115
C(B)
Request to send B
OUT
105
Table 10: X.21 INTERFACE PIN ASSIGNMENT
SW2-1/2-2 ON/OFF
16
ET100 LAN-WAN Bridge
Cable Pin Assignments:
RS-530 Cable, 25 conductor round, 1 to 1, 1m.
(Use this cable for RS-232 applications as well.)
Part#:58-D2FD2M007, RS-530 Cable, DB25 Female <=> DB25 Male, 1 Meter
Part#:58-D2FD2F010, RS-530 Cable, DB25 Female <=> DB25 Female, 1 Meter
DB25(Female)
DB25(Male/Female)
PIN
PIN
1 <===========>
1
2 <===========>
2
3 <===========>
3
4 <===========>
4
5 <===========>
5
6 <===========>
6
7 <===========>
7
8 <===========>
8
9 <===========>
9
10 <===========>
10
11 <===========>
11
12 <===========>
12
13 <===========>
13
14 <===========>
14
15 <===========>
15
16 <===========>
16
17 <===========>
17
18 <===========>
18
19 <===========>
19
20 <===========>
20
21 <===========>
21
22 <===========>
22
23 <===========>
23
24 <===========>
24
25 <===========>
25
17
ET100 LAN-WAN Bridge
V.35 Cable, multi-conductor round, 1m.
Part#:58-D2FM3M001, V.35 Cable, DB25 Female – MB34 Male, 1 Meter
Part#:58-D2FM3F000, V.35 Cable, DB25 Female – MB34 Female, 1 Meter
DB25(Female)
MB34(Male/Female)
PIN
PIN
2 <===========>
P
14 <===========>
S
3 <===========>
16 <===========>
R
T
4
5
6
20
8
<===========>
<===========>
<===========>
<===========>
<===========>
C
D
E
H
F
24 <===========>
11 <===========>
U
W
15 <===========>
12 <===========>
Y
AA
17 <===========>
9 <===========>
V
X
1 <===========>
7 <===========>
22 <===========>
A
B
J
NOTE: TWISTED PAIRS;
P,S
R,T
U,W
Y,AA
V,X
18
ET100 LAN-WAN Bridge
RS-449 Cables, multi-conductor round, 1m.
Part#:58-D2FD3M003, RS-449 Cable, DB25 Female – DB37 Male, 1M
Part#:58-D2FD3F000, RS-449 Cable, DB25 Female – DB37 Female, 1M
DB25(Female)
DB37(Male/Female)
PIN
PIN
1 <===========>
1
7 <===========>
19
(the following are all twisted pairs)
2 <===========>
4
14 <===========>
22
3 <===========>
16 <===========>
6
24
4 <===========>
19 <===========>
7
25
5 <===========>
13 <===========>
9
27
6 <===========>
22 <===========>
11
29
20 <===========>
23 <===========>
12
30
8 <===========>
10 <===========>
13
31
24 <===========>
11 <===========>
17
35
15 <===========>
12 <===========>
5
23
17 <===========>
9 <===========>
8
26
19
ET100 LAN-WAN Bridge
X.21 Cables, multi-conductor round, 1m.
Part#:58-D1MD2F003, X.21 Cable, DB25 Female – DB15 Male, 1M
Part#:58-D1FD2F001, X.21 Cable, DB25 Female – DB15 Female, 1M
DB25(Female)
DB15(Male/Female)
PIN
PIN
1 <===========>
1
7 <===========>
8
(the following are all twisted pairs)
2 <===========>
2
14 <===========>
9
3 <===========>
16 <===========>
4
11
4 <===========>
19 <===========>
3
10
8 <===========>
10 <===========>
5
12
17 <===========>
9 <===========>
6
13
20
ET100 LAN-WAN Bridge
Sync Mode Clock Settings
Interface
RS-530/449/232 or V.35
X.21
Signals
TD(103)
RD(104)
TD(103)
RD(104)
WAN TCLK
From
From
External
TC(114)
RC(115),S
WAN TCLK Internal
(Internal)*
Internal
WAN RCLK
From
From
External
RC(115)
RC(115),S
WAN RCLK
Internal
(Internal)*
Internal
Table 11: SYNC Mode Clock Settings
* Because the ET100's WAN port is DTE, the X.21 clock sources for
transmit and receive are always issued from the DCE side S signal.
Setting the ET100's X.21 clock mode to internal is not recommended.
21
ET100 LAN-WAN Bridge
APPLICATIONS
In the following example, the ET100 is configured for bridging
over an E1 (or T1) carrier provider's network. The ET100's interface is
set to V.35 to match the CSU/DSU unit. The CSU/DSU may be set
unframed or may be set to use a fraction (n x 56 or n x 64) of the E1 (or
T1) line. The CSU/DSU timing is received from the carrier provider's
network so the ET100's timings for Tx and Rx clocks should both be
set to external. In this configuration, the rate DIP settings of the ET100
are ignored.
Figure 3: Bridging over E1 services
22
ET100 LAN-WAN Bridge
APPLICATIONS
In the next example, the ET100 is setup to bridge over a PSTN's
leased line. The ET100s speed settings depend upon the speed of the
leased line and the settings of the modems. The timing scheme
recommended is this application is for the Tx and Rx Clocks of each
unit to be set to External while the clocks of the modems are set to
Internal for both or Internal for one and Loop for the other.
Figure 4: Bridging over Synchronous leased line.
23
ET100 LAN-WAN Bridge
APPLICATIONS
In the following example, the ET100 is paired with a G703/64K
interface converter to provide connection over G.703 64Kbps services.
If the G.703 transmit and receive clocks are provided by the central
carrier, each G703/64K converter will be set to centradirectional line
timing. Both ET100's will have their Tx / Rx clocks set external.
Figure 6: ET100 bridge over G.703 64K services.
24
CTC Union Technologies Inc
Fax:(886)2 27991355
Tel:(886)2 26591021
Attn : Technical Support Department
E-mail:[email protected]
From Company:
Name:
Tel: (
)
Fax:(
)
§ MODEL: ¨ ET100
§ ACTIVITY: As attached in DIP switch setting table
§ SYS CONFIGURATION:
§ Question
Technical Inquiry Form
MODEL No.: ¨ ET100
Please fill in the DIP switches configuration with 'ü' marks into the following table.
Send it to us by fax, and we will reply to you immediately.
Your Setting
SW NO. DIP FUNCTION
ON
OFF
SW1
1
WAN Clock Rate (Internal)
2
WAN Clock Rate (Internal)
3
WAN Clock Rate (Internal)
4
WAN Clock Rate (Internal)
5
WAN Clock Rate (Internal)
6
Clock multiplier (n56/64)
7
WAN Tx Clock source
8
WAN Rx Clock source
9
WAN Sync Status
SW2
1
WAN I/F Type
2
WAN I/F Type
3
Bridge / Repeater
4
802.3x Flow Control
5
auto negotiation / manual
6
Full / Half Duplex manual
7
10 / 100Base manual
8
Packet Buffer setting
9
Tx Clock Polarity
Additional comments/questions:
CTC Suggestion
ON
OFF
CTC Union Technologies Co., Ltd.
Nei-Hu HI-TECH Park
9F, No. 60 ZhouZi Street,
Nei-Hu, Taipei, Taiwan
Phone:(886) 2.2659.1021 Fax:(886) 2.2799.1355
E- mail: [email protected] http://www.ctcu.com
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