
Cabling Requirements for the Link Modules
114948-A Rev. A A-5
Table A-3. X.21 WAN Interface Cable (Order No. 7224) Pin Assignments
Bay Networks Termination Remote Termination
Pin Signal Pin Signal
2 Send Data+ 2 Send Data A
16 Send Data- 9 Send Data B
4 Request to Send+ 3 Control A
18 Request to Send- 10 Control B
3 Receive Data+ 4 Receive Data A
17 Receive Data- 11 Receive Data 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
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