HowTo interconnect two sipX PBXs

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[edit] Setup sipXecs to sipXecs Calling

To enable calling between 2 (or more) sipXecs PBX's there are three steps:

  • Make sure each PBX can resolve pertinent DNS records for each other's domain (SRV if you are using SRV).
  • Setup an unmanaged gateway on each PBX pointing to the other PBX.
  • Setup a dial plan used to select the other PBX.


[edit] Example

The following example assumes that there is no NAT between PBX's.

PBX at site 1 is using SRV records and has a SIP domain of example1.com

PBX at site 2 is using SRV records and has a SIP domain of example2.com


1. Make sure each PBX can resolve the domain SRV records for the other domain. 

    See the Check DNS section at http://sipx-wiki.calivia.com/index.php/DNS_Configuration

2. Setup a gateway on the PBX in example1.com as follows:

Image:Gatewaytoexample2domain.jpg


Setup a gateway on the PBX in example2.com as follows:


Image:Gatewaytoexample1domain.jpg


3. Setup custom dial plan entries on each PBX to dial the other PBX when the extensions for the other system are dialed.

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