Nortel Circuit Card 311 Reference page 936

936 NTAK79 2.0 Mb PRI card
PAD SET 0
Offset
5
6
7
8
9
10
11
12
13
14
15
Software selects A-law or Mu-Law and one of 32 possible PAD values
for each channel. These values are provided in a PROM through which
the data is routed. The idle code for A-law is 54H and for Mu-law is 7FH.
The unequipped code is FFH for both A-law and Mu-law. As the idle code
and unequipped code may be country dependent, the software instructs
the NTAK79 to use different codes for each direction. The 32 digital pads
available are illustrated below. The values shown are attenuation levels, that
is 1.0dB is 1dB of loss and -1.0dB is 1db of gain.
Table 388
Digital Pad - values and offset allocations
PAD SET 0
Offset
0
1
2
3
4
5
6
7
8
9
Copyright © 2003-2008, Nortel Networks
.
PAD
5.0 dB
6.1 dB
7.0 dB
8.0 dB
9.0 dB
10.0 dB
11.0 dB
12.0 dB
13.0 dB
14.0 dB
spare
PAD
0.6 dB
1.0 dB
2.0 dB
3.0 dB
4.0 dB
5.0 dB
6.1 dB
7.0 dB
8.0 dB
9.0 dB
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
PAD SET 1
Offset
5
6
7
8
9
10
11
12
13
14
15 Unassigned Code
PAD SET 1
Offset
0
1
2
3
4
5
6
7
8
9
PAD
–5.0 dB
–6.0 dB
–7.0 dB
–8.0 dB
–9.0 dB
–10.0 dB
spare
spare
spare
Idle Code
PAD
0.0 dB
-1.0 dB
-2.0 dB
-3.0 dB
-4.0 dB
-5.0 dB
-6.0 dB
-7.0 dB
-8.0 dB
-9.0 dB