Change Outbound Caller ID

[tony28]

I have created a PBX outside office for remote support users with a different SIP trunk number.
Can I display an Outbound Caller ID different from the assigned SIP number to display the number of our main office instead if the two systems are separate?

I tried changing the Outbound Caller ID from SIP trunks and from extension but it shows the assigned SIP number.
Do I need to restart a service? or this is not possible

 

[leejor]

It may depend on a setting, or, more importantly, your provider. Do they allow the number to be changed? If you put a DID (or any number you want displayed) into the extension external caller ID setting, and the main number still shows, you may need to change a setting in the trunk options. Before you do this, check with your provider, and make note of all the original settings dealing with caller ID. Changing the wrong setting can prevent all calls from working.