Nortel Networks 311 Benutzerhandbuch
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NTBK50 2.0 Mb PRI card
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.
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
software instructs the NTBK50 to use different codes for each direction. The
32 digital pads available are illustrated in
. The values shown are attenuation levels
(1.0dB is 1dB of loss and -1.0dB is 1db of gain).
Table 406
Digital Pad - values and offset allocations
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
The 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.
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.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.