Media Resources - Mitel 470 System Manual

Expansion Stages and System Capacity
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 ...
Total circuits for the functions
2)
intrusion
Circuits for the Call Waiting function
DTMF sender
DTMF receiver for voice mail or auto attendant
DTMF receiver for analogue terminals
Dialling tone receiver
Busy tone receiver
Ring receiver
3)
FSK receiver for CLIP detection on analogue network interfaces
CAStransmitter/receiver for PRI network interfaces
Total audio channels for basic voice mail
Total audio channels for Enterprise voice mail
1) The functions can all be of the same type or used as a mix.
2) Licence required
3) One FSK transmitter available per FXS interface for CLIP display on analogue terminals. No media re-
sources are required.
4) Of relevance only to certain countries such as Brazil
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.
48
1)
three-party conference, six-party conference, intrusion and silent
4)
5)
or auto attendant
2)
, auto attendant
2)
2) 2)
or call recording
syd-0585/1.2 – R4.1 – 08.2016
Number of
entries
10
6
9
8
8
2
5
2
4
30
2
8
Mitel 470 as of R4.1