How to add "0" to Caller ID

[blabla]

How do I prepend a "0" to the From user part of incoming calls, so that the number is signaled in a format suitable for calling back ?

Example: 0 is the number for external line, incoming calls coming in as : [email protected]. But to be dialable, the number signaled to the internal extension would have to be [email protected] ... how do I add the "extra" 0 ?

 

[igor.snezhko]

Why do you need to do this?

 

[blabla]

So that users can call back numbers they see in the missed calls list. At the moment the prefix "0" for external numbers is missing and hence, the call routing fails.

 

[igor.snezhko]

You need to configure outbound rule so it adds 0 prefix to all outbound calls. Thats all.

 

[blabla]

That does not cut it. I want that like with 99% of all PBXes you dial 0 to get an outside line.

so the number: +43 (12) 34567 would be dialed as: 0 00 43 12 34567.

The incoming number is signaled as 0043123456 .. but on the user phone it has to appear as 00043123456.
This is along the usual standard for PBXes.

 

[igor.snezhko]

In outbound reule configure that users must dial 0 to get external line. Why make things harder?