Nortel Networks Passport ARN Routers - Manual (Page 151)

Requirements for European Operation
114200-E Rev 00 D-9
Figure D-5. Cable 7224 (X.21 Compliant)
Table D-9. X.21 Interface (Order No. 7224)
Nortel Networks Termination Remote Termination
Pin Signal Pin Signal
2 Send Data+ 2 TD A
16 Send Data- 9 TD B
4 Request to Send+ 3 Control A
18 Request to Send- 10 Control B
3 Receive Data+ 4 RD A
17 Receive Data- 11 RD B
9 Data Carrier Detect+ 5 Indication A
23 Data Carrier Detect- 12 Indication B
10 Send Timing+ 6 Timing A
24 Send Timing- 13 Timing B
7 Signal Ground 8 Signal Ground
1 Frame Ground 1 Frame Ground
Local Wire Connections
Pin 41 > 43
Pin 28 > 30
Pin 14 > 15
Pin 1
Pin 16
Pin 31
Pin 15
Pin 30
Pin 44
15 Feet
Pin 8 Pin 1
Pin 15 Pin 9
15-position D-Sub plug with locking posts
(ground shield connected to backshell)
44-position D-Sub plug with screw locks
(ground shield connected to backshell)
CAB0068A