Nortel Networks Circuit Card Manual De Usuario

 NT1R20 Off-Premise Station Analog Line card

The OPS analog line card brings the eight analog telephone lines to the IPE 
backplane through a 160-pin connector shroud. The backplane is cabled to the 
input/output (I/O) panel on the rear of the module, which is then connected to 
the Main Distribution Frame (MDF) by 25-pair cables. 

Telephone lines from station equipment cross connect to the OPS analog line 
card at the MDF using a wiring plan similar to that used for trunk cards. A 
typical connection example is shown in Figure 23 on 

, and a list of 

the connections to the analog line card is shown in Table 70. See 
Communication Server 1000M and Meridian 1: Large System Installation 
and Configuration (553-3021-210) for more detailed I/O panel connector 
information and wire assignments for each tip/ring pair.

12A

Unit 0, Ring

12B

Unit 0, Tip

13A

Unit 1, Ring

13B

Unit 1, Tip

14A

Unit 2, Ring

14B

Unit 2, Tip

15A

Unit 3, Ring

15B

Unit 3, Tip

16A

Unit 4, Ring

16B

Unit 4, Tip

17A

Unit 5, Ring

17B

Unit 5, Tip

18A

Unit 6, Ring

18B

Unit 6, Tip

19A

Unit 7, Ring

19B

Unit 7, Tip