Expansion Stages and System Capacity
53
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
• FoIP
Reliable real-time fax transmissions via an IP network using the T.38 fax protocol
(ITU-T).
FoIP channels can be used without a licence.
• Audio
These voice channels are used to play back and record audio data. Each voice
channel is also assigned a DTMF receiver to allow user inputs during playback.
This requires licences and DSP resources.
The voice channels can be used for voice mail, Auto Attendant or call recording.
The allocation is configurable (see "Reserving audio channels", page 56).
The number of configurable voice channels depends on the type of DSP chip
(see "Configuration of DSP chips", page 56).
Note
With the Aastra 470 communications server G.711 voice channels are
always used for voice mail, Auto Attendant and call recording. The SVM
mode parameter can therefore not be changed for this system.
• GSM
Enhanced functionality is achieved for integrated mobile phones by providing
special DTMF receivers during the call connection. Suffix dialling functions (such
as enquiry calls or setting up a conference with function codes ) can be carried
out as a result. The number of GSM channels – and therefore the number of
DTMF receivers – depends on the number of users with integrated mobile
phones who want to use this functionality simultaneously.
One Mobile Phone Extension licence is required for each integrated mobile
phone.
• FXO
The basic resources (fixed DSP functions on the call manager card) cover 16 FXO
interfaces. For system configurations with more than 16 FXO interfaces this set-
ting provides additional dialling tone and busy tone receivers.
Note: The values of the user-definable FXO channels corresponds to the number
of FXO interfaces, not the number of additional dialling tone and busy tone re-
ceivers.
• CAS
CAS (Channel-associated signaling) is a signalling protocol for PRI network inter-
faces used in certain countries (e.g. Brazil). This setting provides audio transmit-
ters and audio receiver for transmitting the signalling information.
To Next Page
Loading...
Need help?
General