Mitel 470 - Media Resources

Expansion Stages and System Capacity
48
Mitel 470 as of R4.1
syd-0585/1.2 – R4.1 – 08.2016
3. 2. 4 Media resources
Media resources are used for complex signal processing functions, and made availa-
ble by DSP chips. (DSP stands for Digital Signal Processor). They provide functions for
conference circuits, DTMF sender and receiver, compression of voice data, etc. Two
DSP chips are permanently fitted to the call manager card.
A DSP chip on the call manager card is allocated to fixed functions, which can be used
without licences (see Tab. 16
).
The functions of the second DSP chip can be selected to suit requirements. The func-
tions are partly subject to licence (see Tab. 21
).
The basic resources of the communications server can be expanded by fitting DSP
modules (see "DSP modules", page 49
) and IP media modules (see "IP media mod-
ule", page 57). The functions of the DSP chips on the DSP modules can also be config-
ured.
System modules on the call manager card
The table below provides an overview of fixed DSP functions on the call manager card.
Except for the Enterprise Voice Mail channels no licences or additional hardware are
required to be able to use the functions.
Tab. 16 System modules on the call manager card
Max. number of simultaneous ...
Number of
entries
Total circuits for the functions
1)
three-party conference, six-party conference, intrusion and silent
intrusion
2)
1) The functions can all be of the same type or used as a mix.
2) Licence required
10
Circuits for the Call Waiting function 6
DTMF sender 9
DTMF receiver for voice mail or auto attendant 8
DTMF receiver for analogue terminals 8
Dialling tone receiver 2
Busy tone receiver 5
Ring receiver 2
FSK receiver
3)
for CLIP detection on analogue network interfaces
3) One FSK transmitter available per FXS interface for CLIP display on analogue terminals. No media re-
sources are required.
4
CAStransmitter/receiver for PRI network interfaces
4)
4) Of relevance only to certain countries such as Brazil
30
Total audio channels for basic voice mail
5)
or auto attendant
2)
5) Can be used without licence subject to the following restrictions: Voice memory capacity approx. 20 minutes,
no e-mail notification in the event of new voice messages, no forwarding of voice messages, no call record-
ing, restricted voice mail menu by remote retrieval.
2
Total audio channels for Enterprise voice mail
2)
, auto attendant
2)
or call recording
2)
8