Ds-1 Carrier Interface - Meridian Nortel 1 Option 11C Technical Reference Manual

DS-1 Carrier interface

Table 141
NTAK09 switch settings
Distance to Digital Cross-Connect
0 - 133 feet
133 - 266 feet
266 - 399 feet
399 - 533 feet
533 - 655 feet
Transmitter
The transmitter takes the binary data (dual unipolar) from the PCM
transceiver and produces bipolar pulses for transmission to the external
digital facility. The DS1 transmit equalizer allows the cabling distance to be
extended from the card to the DSX-1 or LD-1. Equalizers are switch
selectable through dip-switches and the settings are as shown below.
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.
NTAK09 1.5 Mb DTI/PRI card
Switch Setting
1
DCH F/W (LEN 0)
Off Off
Off On
Off Off
Off On
Off Off
Option 11C and 11C Mini
Page 453 of 544
2 3
(LEN 1)
Off
On
On
Off
Off
Technical Reference Guide
4
(LEN 2)
On
Off
Off
Off
Off