Expansion Stages and System Capacity
49
Mitel 415/430 as of R4.1
syd-0580/1.2 – R4.1 – 08.2016
Tab. 20 Reserving audio channels
No audio channels are reserved after a first start and they can be used for voice mail,
auto attendant, call recording or announcement.
Voice-mail system modes of operation
The voice mail system mode of operation is set in the Media resources ( =ym) view
using the Voice mail mode parameter. The configured mode is always valid for the en-
tire node.
Tab. 21 Voice-mail system modes of operation
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
Parameter Explanation
Available audio channels Maximum available audio channels on this node. This value
depends on the configuration of the media sources.
Reserved for Auto-Attendant Number of audio channels on this node used for auto atten-
dant and queue with announcement only.
Reserved for voice mail Number of audio channels on this node that can be used
exclusively for voice mail.
Reserved for call recording
1)
1) Note for Voice mail mode = Extended (G.729 only): For each audio channel reserved for call recording, the
number of possible audio channels reserved for voice mail is reduced by 3. The possible combinations of
voice mail/call recoding are as follows: 12/0, 9/1 and 6/2.
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.
Voice mail mode Explanation Licences
Normal (G.711 or G.729) The Normal (G.711 or G.729) hybrid
mode handles both audio formats; how-
ever, the number of audio channels per
node is limited to 4.
Two voice mail channels are available
with the Enterprise Voice Mail licence.
Each additional voice mail channel
requires an additional Audio Record &
Play Channels licence.
Expanded (G.729 only) In Expanded (G.729 only) mode there
are more audio channels available per
node than in hybrid mode. However the
quality of the audio data is somewhat
poorer as a result of the compression.
Two voice mail channels are available
with the Enterprise Voice Mail licence.
Each additional voice mail channel
requires an additional Audio Record &
Play Channels licence.
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