Nortel Networks Circuit Card - Manual (Page 718)

Page 718 of 906 NTAK09 1.5 Mb DTI/PRI card
553-3001-211 Standard 3.00 August 2005
extend from the card to the DSX-1 or LD-1. Equalizers are switch selectable
through dip-switches. The settings are shown in Table 232.
Receiver
The receiver extracts data and clock from an incoming data stream and
outputs clock and synchronized data. At worst case DSX-1 signal levels, the
line receiver will operate correctly with up to 655 feet of ABAM cable
between the card and the external DS1 signal source.
Connector pinout
The connection to the external digital carrier is through a 15-position male
D-type connector. See Table 233.
Table 232
NTAK09 switch settings
Switch Setting
Distance to Digital Cross-Connect
1
DCH F/W
2
(LEN 0)
3
(LEN 1)
4
(LEN 2)
0 - 133 feet Off Off Off On
133 - 266 feet Off On On Off
266 - 399 feet Off Off On Off
399 - 533 feet Off On Off Off
533 - 655 feet Off Off Off Off
Table 233
DS-1 line interface pinout for NTBK04 cable (Part 1 of 2)
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