Expansion With Cards And Modules; System Modules; Dsp Modules - Mitel Aastra 470 System Manual

Expansion Stages and System Capacity
DSP function which can be selected on the call manager card
A DSP chip on the call manager card provides selectable functions. A description of
the individual functions can be found as of page 47.
The functions are determined in the DSP configuration ( =ym). In Tab. 21 all the
possible combinations are listed, with the maximum number of voice channels. For
this the DSP chip on the Call Manager card has to be loaded with different firm-
ware. Additional functions require the use of one or more DSP modules. Some of
these functions are subject to a licence.
3. 3

Expansion with cards and modules

An Aastra 470 basic system can be individually expanded using interface cards, sys-
tem modules and an application card. The number and position of the available
slots are described in the chapter "Interfaces, display and control elements",
page 40.
3. 3. 1

System modules

With system modules a distinction is made between modules expandable as an op-
tion (DSP modules, IP media modules, Call charge modules) and mandatory mod-
ules (RAM module). This chapter describes only the system modules that can be ex-
panded as an option. They expand the resources of the communications server,
which means the system can be expanded step by step in line with requirements.
3. 3. 1. 1

DSP modules

Processor-intensive system functions require DSP resources. The communication
server's DSP capacity increases through the use of DSP modules.
Fig. 12 Design of the DSP module
46 Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014