Mitel Aastra 470, System Manual, Page: 52 / 284

Expansion Stages and System Capacity
52
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
No voice channels are reserved after a first start and they can be used for voice
mail, auto attendant or call recording.
Configuration of DSP chips
The functions which can be allocated to each DSP chip are determined in the DSP
configuration (
=ym ). The DSP modules provide additional functions as indicated
in the following table. All the possible combinations are listed, with the maximum
number of voice channels.
Tab. 21 Max. number of voice channels per DSP chip on CPU1, SM-DSPX1 or SM-DSPX2
Reserved for Auto-Attendant Number of audio channels on this node that can be used
exclusively for auto attendant.
Reserved for call recording Number of audio channels on this node that can be used
exclusively for call recording.
Non-reserved/shared Number of audio channels on this node that can be used
for voice mail, auto attendant or call recording, depend-
ing on where they happen to be required.
DECT VoIP
1)
1)
Licence(s) required (see also "Licences", page 67 ).
FoIP Audio
1)
GSM
1)
FXO CAS
2)
2)
Of relevance only to certain countries such as Brazil
Remarks
10
8 12
8 5
4 32 5
4 24 10
4 12 20
4 12 150
5...8 Depends on the parameter VoIP mode:
• G.711 : 8 channels
• Secure G.711 : 7 channels
• G.711/G.729 : 6 channels
• Secure G.711/G.729 : 5 channels
4 18 10 Only for VoIP mode = G.711 or G.711/G.729
4 12 150 Only for VoIP mode = G.711 or G.711/G.729
3 3
46 150
64
Parameter Explanation