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Requirements for European Operation
312410-A Rev 00
D-3
Synchronous Cabling Requirements
through
and
through
for
synchronous interface cabling information.
Note the following compliance requirements:
•
V.28 compliance requires the use of an Order No. 7837 cable
•
V.35 compliance requires the use of an Order No. 7220 cable
•
X.21 compliance requires the use of an Order No. 7224 cable
Figure D-1.
Cable 7837 (V.28 Compliant)
Table D-6.
WAN Interface (Order No. 7837)
Nortel Networks Termination
Remote Termination
Pin
Signal
Pin
Signal
1
Frame Ground
1
Frame Ground
2
Send Data+
2
Send Data
3
Receive Data+
3
Receive Data
4
Request to Send+
4
Request to Send
5
Clear to Send+
5
Clear to Send
6
Data Set Ready+
6
Data Set Ready
8
Data Terminal Ready+
20
Data Terminal Ready
(continued)
Pin 1
Pin 16
Pin 31
Pin 15
Pin 30
Pin 44
15 Feet
Pin 13
Pin 1
Pin 25
Pin 14
44-position D-Sub plug with screw locks
(ground shield connected to backshell)
25-position D-Sub plug receptacle with screw locks
(ground shield connected to backshell)
AN0081A