Nortel Networks 1000 User Manual
Page 878
878
NTBK50 2.0 Mb PRI card
Table 370
Digital Pad - values and offset allocations (cont’d.)
PAD SET 0
PAD SET 1
Offset
PAD
Offset
PAD
14
14.0 dB
14
Idle Code
15
spare
15
Unassigned Code
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 NTBK50 to use different codes for each direction.
The 32 digital pads available are illustrated in
- values and offset allocations" (page 878)
. The values shown are
attenuation levels (1.0dB is 1dB of loss and -1.0dB is 1db of gain).
Table 371
Digital Pad - values and offset allocations
PAD SET 0
PAD SET 1
Offset
PAD
Offset
PAD
0
0.6 dB
0
0.0 dB
1
1.0 dB
1
-1.0 dB
2
2.0 dB
2
-2.0 dB
3
3.0 dB
3
-3.0 dB
4
4.0 dB
4
-4.0 dB
5
5.0 dB
5
-5.0 dB
6
6.1 dB
6
-6.0 dB
7
7.0 dB
7
-7.0 dB
8
8.0 dB
8
-8.0 dB
9
9.0 dB
9
-9.0 dB
10
10.0 dB
10
-10.0 dB
11
11.0 dB
11
spare
12
12.0 dB
12
spare
13
13.0 dB
13
spare
14
14.0 dB
14
Idle Code
15
spare
15
Unassigned Code
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
02.06
Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.