Expansion Stages and System Capacity
42
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
System modules 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
.
The functions are specified in the
DSP configuration
using the AMS Configuration
Manager. In
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 firmware. 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",
3. 3. 1
System modules and system cards
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). The system cards (Flash card, EIM card) are always required.
This chapter describes only the system modules that can be expanded as an op-
tion. 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