Download 3CX Phone System V12 User Manual

Connecting 3CX Phone Systems (Bridges)
Introduction
You can connect 2 separate 3CX Phone Systems, allowing you to make calls between branch
offices using your internet connection – and thus at no charge.
The “bridge” will be assigned a prefix, which users must dial to access the other 3CX Phone System
or SIP phone system. This prefix must be followed by the extension number they wish to reach on
the other 3CX Phone System.
For example, if you assign the prefix “2” to a bridge with another office, and within that office you
want to dial someone who has extension number 105 on that phone system, you would dial 2105 to
reach that person directly.
Alternatively, you can assign the extensions in one office to start with one number (e.g. 1), and the
extension in the second office to start with a different number (e.g. 2 and 3). That way, the users
do not need to dial a prefix, since the PBX will route the call based on the first digit of the called
number. In this case, the outbound rule (with prefix 1 and 2) should not remove any digit.
Note: The features are only available in the Standard and Pro editions of 3CX Phone System.
Creating a Bridge
Each bridge must have a ‘Master’ and a ‘Slave’ Phone System. The Slave Phone system registers
with the Master Phone System. To create a bridge you must first setup the ‘Master’ Phone System
and then the ‘Slave’ Phone System.
Step 1: Create a Bridge on the Master Phone System
Screenshot - Creating a Master Bridge
1. In the management console of the ‘Master’ 3CX Phone System, click on the Add > Bridge
menu option to bring up the ‘Add Bridge’ page.
2. Enter a name for the bridge and assign a virtual extension number. A bridge must be
assigned a virtual extension number so it can be addressed by the phone system. Accept
the default or choose another extension that is free. The virtual extension number will also
be used as the Authentication ID, so the virtual extension chosen should be available and
the SAME on BOTH 3CX Phone Systems.
3. Now select the Type of bridge:
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