Nortel Networks 1000 - Manual (Page 696)

696 NT8D15 E and M Trunk card
Connector pin assignments
The E and M Trunk card brings the four analog trunks to the backplane
through a 160-pin connector shroud.The backplane is cabled to the I/O
panel on the rear of the module, which is then connected to the Main
Distribution Frame (MDF) by 25-pair cables.
Telephone trunks connect to the E and M Trunk card at the MDF using a
wiring plan similar to that used for line cards.
A typical connection example is shown in Figure 236 "E and M Trunk card
- typical cross connection example" (page 698) . A list of the connections to
the E and M Trunk card in the various 2-wire modes is shown in Table 271
"E and M Trunk card - backplane pinouts for 2-wire modes" (page 696) .
A list of the connections to the E and M Trunk card in the various 4-wire
modes is shown in
Table 272 "E and M Trunk card - backplane pinouts for
4-wire modes" (page 696) .
See Communication Server 1000M and Meridian 1 Large System
Installation and Configuration (NN43021-310) for complete I/O connector
information and wire assignments for each tip/ring pair.
Table 271
E and M Trunk card - backplane pinouts for 2-wire modes
2-wire Paging Mode 2-wire Type I Mode
Trunk
Number Pin Signal Pin Signal Pin Signal Pin Signal
12B Tip 12A Ring 12B Tip 12A Ring 0
15B A 15A PG 14B E 14A M
16B Tip 16A Ring 16B Tip 16A Ring 1
19B A 19A PG 18B E 18A M
62B Tip 62A Ring 62B Tip 62A Ring 2
65B A 65A PG 64B E 64A M
66B Tip 66A Ring 66B Tip 66A Ring 3
69B A 69A PG 48B E 68A M
Table 272
E and M Trunk card - backplane pinouts for 4-wire modes
4-wire Type I Mode 4-wire Type II Mode
Trunk
Number
Pin Signal Pin Signal Pin Signal Pin Signal
12B TA 12A TB 12B TA 12A TB
13B RA 13A RB 13B RA 13A RB
14B E 14A M 14B EA 14A EB
0
15B ECG 15A ESCG 15B MA 15A MB
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.