D-Channel Interface - Nortel Enterprise 1000 Reference Manual

Table 31
Digital pad values and offset allocations (Part 2 of 2)
3
4
5
6
7
8
9
A
B
C
D
E
F

D-channel interface

Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
unassigned code, FF
The D-channel interface is a 64 Kbps maximum, full-duplex, serial bit-stream
configured as a DCE device. The data signals include receive data output,
transmit data input, receive clock output, and transmit clock output. The
receive and transmit clocks can vary slightly from each other as determined
by the transmit and receive carrier clocks.
Feature selection through software configuration for the D-channel includes:
• 56 Kbps
• 64 Kbps clear
• 64 Kbps inverted (64 Kbps restricted)
NTAK09 1.5 Mb DTI/PRI card
4dB
5dB
6.1dB
8dB
–1dB
–3dB
–4dB
idle code, 7F
1dB
–2dB
–5db
–6db
Page 141 of 236
–10db
0.6db
7db
9db
10db
11db
12db
3db
14db
spare
spare
spare
spare