Nortel Networks Circuit Card 311 - Manual (Page 1076)

1076 NTRB21 DTI/PRI/DCH TMDI card
From 50-pin
MDF connector
To DB-15 Signal name Description
pin 23 pin 9 R transmit ring to network
pin 25 pin 2 FGND frame ground
pin 49 pin 3 T1 receive tip from
network
pin 24 pin 11 R1 receive ring from
network
The connection to the external digital carrier is via a 15 position Male D
type connector.
Table 441
DS-1 line interface pinout for NTBK04 cable
From 50-pin
MDF connector
To DB-15
Signal
name
Description
pin 48 pin 1 T transmit tip to network
pin 23 pin 9 R transmit ring to network
pin 25 pin 2 FGND frame ground
pin 49 pin 3 T1 receive tip from
network
pin 24 pin 11 R1 receive ring from
network
The connection to the external digital carrier is through a 15 position Male
D-type connector.
Table 442
DS-1 line interface pinout for NTBK04 cable
From 50-pin
MDF
connector
To DB-15 Signal name Description
pin 48 pin 1 T transmit tip to
network
pin 23 pin 9 R transmit ring to
network
pin 25 pin 2 FGND frame ground
pin 49 pin 3 T1 receive tip from
network
pin 24 pin 11 R1 receive ring from
network
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.