Aastra 470, System Manual, Page: 48 / 250

Expansion Stages and System Capacity
48
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
– If voice mail channels are configured, the two basic voice mail chan-
nels that can be used without a licence are redundant (see Tab. 14 ).
– Voice mail channels and FoIP channels can only be configured on one
DSP chip per node.
– The system has to be restarted for the configuration changes of the
DSP to take effect.
– After a first start all the DSP chips are configured on DECT .
3. 3. 1. 2 IP media modules
IP media modules can be used for systems with high call switching requirements in
the IP network. Depending on the module type a different number of VoIP and FoIP
channels are available, provided by the IP media modules as required (see
Tab. 21,
page 49 ).
Note
The use of the IP media switch does not depend on the mode of opera-
tion of the standard media switch and the configuration of the DSP chips
that are used by the standard media switch.
Fig. 14 Design of the IP media modules
IP media modules can be fitted both to the processor card CPU1 (see Fig. 9,
page 37 ) and to the 1PRI and 2PRI trunk cards (see Fig. 16, page 50 ). The modules
are not stackable.