Installation and Reference Manual
System Operation
Installation and Reference Manual v3.2/0410/6
47
A list of each module’s IP address can be viewed in Manager by selecting Utilities and then IP Addresses.
Creating an Intramodule Trunk
In order to use the compression provided by a Voice Compression Module or Card (see below) the
following should be configured. For calls between two Call Servers a Voice Compression Module or Voice
Compression Card is required at both ends together with the following configuration.
1
In Manager select Modules
2
Select the Call Server to which the VCM is connected or in which the card has been installed.
3
Select the Intra Module Trunks page
4
Click on Add Intra Module Trunk
5
In the Name field enter a name to identify this
trunk
6
From the Compression Type list box select
G729A8K
7
In the Capacity field enter the number of
connections to be allowed on this link
8
Select Apply when ready
9
Select the Add Intra Module Member button and
the list of Modules will appear
10
Select the Call Server at the other end
11
Repeat steps 11 to 12 until all the required Call Servers that have a VCM connected or containing a
Voice Compression Card have been entered.
12
Select Update or Apply when ready.
If calls are to be made to a Call Server that does not
contain a Voice Compression Card or does not have a
Voice Compression Module connected it is
recommended that the this Intramodule Trunk is also
created.
If fax calls are to be made between two Call Servers
where compression is supported a Dial Plan entry
similar to the this example should be created within
each fax machine’s Dial Plan. The DialTransparent
Action will allow calls to by-pass an Intramodule Trunk.
A call made via this Dial Plan entry does not consume
a compression channel. (For further information on
Dial Plans please refer to page 114.)
Installing a Voice Compression Card
A Voice Compression Card supports G.729a to compress up to 8 voice calls between two Call Servers. A
card must be fitted at both ends as follows:
