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Table 77. V.36/RS-449 advanced cable wrap connector wiring (continued)

Signal destination Wrap connector pin to pin

SC-GND to RC-GND 37 to 20

X.21 communications adapter cable

Table 78. X.21 Communications Adapter Cable

Signal designation Adapter connector pin number DCE connector pin number

Transmitted data A, B 2, 4 2, 9

Received data A, B 3, 5 4, 11

Control A, B 20, 23 3, 10

Indication A, B 6, 15 5, 12

Signal element timing A, B 17, 8 6, 13

Cable ID bit 2, common return 7, 10 8

Note: Cable ID 2 is connected to common return pin 7 only at the DTE connector end and is not connected at the

DCE end.

X.21/High speed communications adapter cable

Table 79. X.21/High speed communications adapter cable

Signal designation Adapter connector pin number DCE connector pin number

Transmitted data A, B 18, 34 2, 9

Received data A, B 37, 20 4, 11

Control A, B 36, 35 3, 10

Indication A, B 38, 39 5, 12

Signal element timing A, B 12, 29 6, 13

Cable ID bit 2, common return 49, 7 8

Note: Cable ID 2 is connected to common return pin 7 only at the DTE connector end and is not connected at the

DCE end.

X.21 cable wrap connector wiring

Table 80. X.21 cable wrap connector wiring

Signal designation Wrap connector pin to pin

Transmit data A to receive data A, signal timing A 2 to 4, 6

Transmit data B to receive data B, signal timing B 9 to 11, 13

Control A to indicate A 3 to 5

Control B to indicate B 10 to 12

X.21 advanced PCI communications cable

Table 81. X.21 advanced PCI communications cable

Signal designation Adapter connector pin number DCE connector pin number

Transmitted data A (TD-A) 13 2

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