Nortel Networks Circuit Card - Manual (Page 834)

Page 834 of 906 NTRB21 DTI/PRI/DCH TMDI card
553-3001-211 Standard 3.00 August 2005
D-channel interface
The D-channel interface is a 64 kbps, full-duplex, serial bit-stream configured
as a Data Circuit-terminating Equipment (DCE) device. The data signals
include:
• receive data output
• transmit data input
Table 263
Digital pad values and offset allocations
Offset PAD set 0 PAD set 1
0 0dB –7db
1 2dB –8db
2 3dB –9db
3 4dB –10db
4 5dB 0.6db
5 6.1dB 7db
6 8dB 9db
7 –1dB 10db
8 –3dB 11db
9 –4dB 12db
A idle code, 7F 3db
B unassigned code, FF 14db
C 1dB spare
D –2dB spare
E –5db spare
F –6db spare