Expansion Stages and System Capacity
41
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
3. 2. 2
Power supply
The system is powered as standard with 230 VAC or 115 VAC using the supplied
power supply. The communications server is powered with 19V DC from the power
supply. All other voltages are generated directly on the mainboard. To ensure that
its operation is maintained even in the event of a mains outage, an external unin-
terruptible power supply (UPS) must be used. For more details about the power
supply see
"Powering the communication server", page 95
.
3. 2. 3
DSP Resources
DSP resources are used for complex signal processing functions. (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 perma-
nently to the mainboard.
Part of these DSP resources is allocated to fixed functions and can be used without
licences (see
Tab. 15
).
Another part is allocated to selectable functions, according to requirements. 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. 23
and
Tab. 22
).
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 ...
Aastra 415
Aastra 430
Total circuits for the functions
1)
three-party conference, six-party conference,
intrusion and silent intrusion.
2)
4
4
Circuits for the Call Waiting function
2
2
DTMF sender
3
3
DTMF receiver for voice mail or auto attendant
2
2
DTMF receiver for analogue terminals
4
4
Dialling tone receiver
2
4
Busy tone receiver
4
4
Ring receiver
2
2
