Nortel Circuit Card Installation Manual page 718

Page 718 of 906
Table 232
NTAK09 switch settings
Distance to Digital Cross-Connect
0 - 133 feet
133 - 266 feet
266 - 399 feet
399 - 533 feet
533 - 655 feet
Table 233
DS-1 line interface pinout for NTBK04 cable (Part 1 of 2)
From 50-pin MDF
connector
pin 48
pin 23
pin 25
553-3001-211 Standard 3.00
NTAK09 1.5 Mb DTI/PRI card
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.
To DB-15
pin 1
pin 9
pin 2
August 2005
Switch Setting
1 2
DCH F/W (LEN 0)
Off Off
Off On
Off Off
Off On
Off Off
Signal name
T
R
FGND
3
(LEN 1) (LEN 2)
Off On
On Off
On Off
Off Off
Off Off
Description
transmit tip to network
transmit ring to network
frame ground
4