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

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
page 43.
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 module

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
DSP modules are stacked on the call manager card and do not take up any slots for
interface cards (see
ules can be used as a mix.
Tab. 15 DSP modules
Type Number of DSP chips per module
SM-DSPX1
SM-DSPX2
1)
SM-DSP1
1)
SM-DSP2
1)
Although no longer available, the module is still supported.
Aastra 470 ab R3.0
syd-0337/1.5 – R3.0 – 05.2013
Expansion Stages and System Capacity
"Interfaces, display and control elements",
"Fitting DSP modules", page
1
2
1
2
110). The different types of mod-
Max. number of modules per system
2
51