52
E
XPANSION WITH CARDS AND MODULES
CHAPTER 3 EXPANSION STAGES AND SYSTEM CAPACITY
No audio channels are reserved after a first start and they can be used for voice mail, auto attendant, call
recording or announcement.
Configuration of DSP chips
The functions which can be allocated to each DSP chip are determined in the Media resources ( =ym)
view. The DSP modules provide additional functions as indicated in the following table. All the possible
combinations are listed, with the maximum number of channels.
Reserved for call recording Number of audio channels on this node that can
be used exclusively for call recording.
Reserved for announcements Number of audio channels on this node that can
be used exclusively with audio file.
Non-reserved/shared Number of audio channels on this node which
can be used by voice mail, auto attendant, queue
with announcement, call recording,
announcement with audio file or conference
bridge, depending on how they are needed at
that time. Announcement service and music on
hold use their own resources.
Table 3.10:Max. number of channels per DSP chip on SM-DSPX1 or SM-DSPX2 (Sheet 1 of 2)
DECT VoIP
1
FoIP Audio
a
GSM
a
CAS
2
Remarks
8 2
8 8
6 4
6 2 8
4 4/6 8 6 channels if Voice
mail mode =
Expanded (G.729
only)
4 6
4 2 2 8
Table 3.9:Reserving audio channels (Continued) (Sheet 2 of 2)
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