Chapter 5. How To Configure Advanced SIP
Multiple PBXs
If you have multiple PBXs on the inside, you might want to send calls to different servers based on the sender or the called number.
On the Dial Plan page, you define which calls should be redirected to which PBX. First, turn the Dial Plan on.
In the Matching From Header table, you define from which network the calls can come. You can also select what the From header (that tells who is calling) should look like. This is used when matching requests in the Dial Plan table below. Name each definition properly, to make it easier to use further on.
In this case, we define one entry for each operator.
In the Matching
In this case, you want to sort out which calls go to which PBX.
Assuming that each PBX manage a phone number range where the leading digits are differ- ent, it is easy to make matching definitions.
As the UK operator will send phone numbers that start with a "1", we allow for that, but by putting the "1" in the Prefix column, it will be stripped from the phone number when the Telecommuting Module forwards the call.
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