Trunk-To-Trunk Routing Example - AudioCodes Mediant 2000 User Manual

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9.18

Trunk-to-Trunk Routing Example

This example describes two devices, each interfacing with the PSTN through four E1
spans. Device A is configured to route all incoming Tel-to-IP calls to Device B. Device B
generates calls to the PSTN on the same E1 trunk on which the call was originally received
(in Device A).

Device A

Device
The ini file parameters configuration for devices A and B are as follows:
1. At both devices, define four trunk groups, each with 30 B-channels:
•
TrunkGroup_1 = 0/1-31,1000
•
TrunkGroup_2 = 1/1-31,2000
•
TrunkGroup_3 = 2/1-31,3000
•
TrunkGroup_4 = 3/1-31,4000
2. At Device A
for Tel-to-IP calls:
AddTrunkGroupAsPrefix = 1
3. At Device A, route all incoming PSTN calls starting with prefixes 1, 2, 3, and 4, to the
IP address of Device B
•
Prefix = 1, 192.168.3.51
•
Prefix = 2, 192.168.3.51
•
Prefix = 3, 192.168.3.51
•
Prefix = 4, 192.168.3.51
Note: You can also define Prefix = *,192.168.3.51, instead of the four lines above.
4. At Device
called number:
•
PSTNPrefix = 1,1
•
PSTNPrefix = 2,2
SIP User's Manual
IP address: 192.168.3.50
B IP address: 192.168.3.51
, add the originating Trunk Group ID as a prefix to the destination number
:
B , route IP-to-PSTN calls to Trunk Group ID according to the first digit of the
440
Mediant 2000
Document #: LTRT-68809