Appendix A Technical specifications 101
Table 34 X.21 cable pinouts (continued)
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end | Signal name | and conductor | end | Notes |
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28 | pair 13B | 8 | Note 3 | |
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1 | SHIELD | pair 14A | 1 | Note 4,5 |
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7 | SIGNAL GROUND | pair 14B | 8 | Note 3,5 |
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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
2.The term “no conn” means the wire is not connected to a pin in the
3.Wires 13B and 14B connect to pin 8 in the
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.
HSSI WAN interface card
The HSSI WAN interface card has a
Figure 44 HSSI WAN interface card
CS460003A
Included in the accessory box is a cable that maps the T3 signals out to a
Table 35 provides the T3 cable pinouts.
Table 35 T3 cable pinouts
| Signal name | |
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1 | GND | 1 |
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2 | RCB | 2 |
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3 | CAB | 3 |
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