60Appendix A Technical specifications

Table 27 X.21 cable pinouts (continued)

Standard-wired

 

Pair number

Standard-wired

 

end 28-pin male

Signal name

and conductor

end 15-pin male

Notes

1

SHIELD

pair 14A

1

Note 4,5

 

 

 

 

 

7

SIGNAL GROUND

pair 14B

8

Note 3,5

 

 

 

 

 

The following notes apply to the single X.21 cable:

1.Wires of pair 4 connect to wires of pair 5, but not to any pins in the DA-15.

2.The term “no conn” means the wire is not connected to a pin in the 15-pin connector.

3.Wires 13B and 14B connect to pin 8 in the 15-pin connector.

4.At each end, the cable shield and connector shell must connect to pin 1 of the connector.

5.Do not interconnect Shield to Signal Ground because these are separate signals.

NN46110-313 02.01

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Nortel Networks 1050, 1100, 1010 manual Appendix a Technical specifications 21 cable pinouts, Pair 14A, Pair 14B

1010, 1050, 1100 specifications

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