5.37.2.10. Deactivation/Activation of Voice Compression 
In case of VC activated, one VCM-B15 offers 15 B-channels (only voice)
and occupies 4 B-channels (data & voice). Therefore the capacity
of B-channels for data transfer will decrease.
With the function "deactivation/activation of VC" the relation
of voice channels to data/voice channels can be adapted when required.
It's possible to switch each VCSU separately.
|
Activated VCSUs (occupied Partner B-channels)
|
S2 B-channels (data & voice)
|
VCM B-channels (only voice)
|
required VCMs
|
|
30
|
0
|
112
|
7 VCM-B15, 1 VCM-B7
|
|
29
|
1
|
108
|
7 VCM-B15, 1 VCM-B7
|
|
28
|
2
|
105
|
7 VCM-B15
|
|
27
|
3
|
101
|
7 VCM-B15
|
|
26
|
4
|
97
|
7 VCM-B15
|
|
25
|
5
|
93
|
7 VCM-B15
|
|
24
|
6
|
90
|
6 VCM-B15
|
|
20
|
10
|
75
|
5 VCM-B15
|
|
16
|
14
|
60
|
4 VCM-B15
|
|
12
|
18
|
45
|
3 VCM-B15
|
|
8
|
22
|
30
|
2 VCM-B15
|
|
4
|
26
|
15
|
1 VCM-B15
|
|
3
|
27
|
11
|
1 VCM-B15
|
|
2
|
28
|
7
|
1 VCM-B15
|
|
1
|
29
|
3
|
1 VCM-B15
|
|
0
|
30
|
0
|
none
|
The deactivation/activation of VC requires deactivated circuits of
VCM- and its Partner board. See detailed description in Section 57.2.7,
"Activation/Deactivation of Boards and Circuits", on page 720.
Deactivate Voice Compression:
DEACTIVATE-DSSU:OFFTYPE=DC,TYPE=PEN,PEN1=<partner line>; DEACTIVATE-VOICO:PEN1=<vcm line>[,VCSU=<?>]; ACTIVATE-DSSU:ONTYPE=ANL,TYPE=PEN,PEN1=<partner line>;
The NCs to all or oneVCSU of a VCM will be deactivated. Afterwards the Partner B-channels
are available again as normal S0/S2 B-channel (data&voice); the VCM B-channels (only
for
voice) remain blocked.
Activate Voice Compression:
DEACTIVATE-DSSU:OFFTYPE=DC,TYPE=PEN,PEN1=<partner-circuit>; ACTIVATE-VOICO:PEN1=<vcm-circuit>[,VCSU=<?>]; ACTIVATE-DSSU:ONTYPE=ANL,TYPE=PEN,PEN1=<partner-circuit>;
The NCs to all or oneVCSU of a VCM will be activated. Afterwards the affected Partner
B-channels (data & voice) remain blocked; the VCM B-channels (only for voice) are
ready
again.
INFO:
The NCs at both nodes have to be switched symmetric. See figure in Section 57.1.4.1, "Figures of
Symmetric Voice Compression Configuration", on page 714.