Expansion Stages and System Capacity
49
Mitel SMB Controller
syd-0657/2.0 – R6.0 – 09.2018
3. 2. 2
Power supply
The system is powered as standard with 230 VAC or 115 VAC using the supplied
power supply. The communication server is powered with 19V DC from the power sup-
ply. All other voltages are generated directly on the mainboard. To ensure that its oper-
ation is maintained even in the event of a mains outage, an external uninterruptible
power supply (UPS) must be used. For more details about the power supply see "Pow-
ering the communication server", page 99.
3. 2. 3
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. A DSP
chip is fitted permanently to the mainboard.
Part of these media resources is allocated to fixed functions and can be used without li-
cences (see Tab. 15). Another part is allocated to selectable functions, according to re-
quirements. These functions are partly subject to licence (see Tab. 16).
The basic resources of the communication server can be expanded by fitting DSP
modules . The functions of the DSP chips on the modules can also be configured (see
Tab. 21 and Tab. 1).
Fixed functions of the mainboard DSP
The table below provides an overview of the fixed functions of the mainboard DSP. No
licences or additional hardware is required to use the functions.
Tab. 15
Fixed functions of the mainboard DSP
Max. number of simultaneous ...
SMBC
Total circuits for three-party to six-party conference
10
Call waiting circuits
3
Intrusion and silent intrusion circuits
4
DTMF receiver for voice mail, auto attendant or analogue terminals
10
Dialling tone receiver
4
Busy tone receiver
4
Ring signal receiver
2
FSK receiver for CLIP detection on analogue network interfaces
2
FSK transmitter for CLIP display on analogue terminals
2
Total audio channels for basic voice mail (G.711)
1)
or auto attendant
2)
1) 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) Licence required
2