Expansion Stages and System Capacity
49
Aastra 470 as of R1.2
syd-0337/1.2 – R1.2 – 11.2011
Tab. 20
IP media module
The number of VoIP channels per IP media module depends on both the type of
module and the use of voice channels:
Tab. 21
Max. number of voice channels per IP media module
3. 3. 1. 3
Call charge modules
Optional call charge modules are available for detecting charge pulses on ana-
logue network interfaces.
Fig. 15
Design of call charge modules
Call charge modules are fitted to FXO cards. The call charge modules available
match the number of ports on the FXO cards. Only 1 call charge module can be fit-
ted to each FXO card.
Tab. 22
Call charge modules
Type
Number of modules
per CPU1 processor
card
Number of mod-
ules per 1PRI trunk
card
Number of mod-
ules per 2PRI trunk
card
Max. number of
modules per system
EIP1-8
1
1
2
5
EIP1-32
Type
G.711 only,
secure G.711
G.711/G.729,
secure G.711/G.729
FoIP (T.38)
EIP1-8
32
8
8
EIP1-32
64
28
28
Type
Number of modules per
4FXO trunk card
Number of modules per
8FXO trunk card
4TAX
1)
1)
The availability of the call charge modules depends on the sales chan-
nel.
1
–
8TAX
–
1
