Installing and Operating Passport ARN Routers
D-10
114200-E Rev 00
Figure D-6.
Cable 7936 (X.21 Compliant)
Table D-10.
X.21 Interface (Order No. 7936)
Nortel Networks Termination
Remote Termination
Pin
Signal
Pin
Signal
2
Send Data+
2
Transmitted Data A
27
Send Data-
9
Transmitted Data B
4
Request to Send+
3
Control A
29
Request to Send-
10
Control B
3
Receive Data+
4
Receive Data A
28
Receive Data-
11
Receive Data B
9
Data Carrier
5
Indication A
34
Data Carrier Detect-
12
Indication B
10
6
Timing A
35
Timing-
13
Timing B
1
Frame Ground
1
Frame Ground
7
Signal Ground
8
Signal Ground
Local Wire Connections
Pin 46 > 48 (GRD)
Pin 38 > 40
Pin 14 > 15
15 ft
(4.57 m)
Pin 8
Pin 1
Pin 15
Pin 9
15-position D-sub plug with M-3 jack screws
(ground shield connected to backshell)
Pin 1
Pin 25
Pin 26
Pin 50
50-position 0.8-mm plug
(ground shield connected to internal shell)
CAB0074A
