Add prefix to incoming caller ID based on DID

[dimitrivdw]

Hi,

I have one trunk with multiple phone numbers configured. These different numbers go to different scripts deciding to which extension it gets transfered. That all works fine.

But I now have the following situation:
We have a new number to which some customers can call during other hours compared to our "known/normal" number. This is for support purposes. It will happen that we have to call them back. We would like to do that using the same new number that they used to call us. We can do that using a prefix outbound rule. However, most of the users of our 3CX system just tap the number that last called them and call it back. That however makes them call using the "standard" number.

Is it somehow possible to add a prefix to the incoming number (based on the DID rule), so when they use that number to call back, it uses the outbound rule and calls using the correct number.

Hope this makes sense

Thanks in advance!

Kind regards,

Dimitri

 

[ChrisC_3CX]

The only way to modify an inbound Caller ID would be to use Caller ID Reformatting which occurs on the SIP Trunk level, meaning you would actually need a separate SIP Trunk with that specific DID configured to achieve the behavior you're describing.

 

[dimitrivdw]

Hi, I already tried to set up a second trunk for the same Weepee account (but a different DID), but 3CX doesn't allow it. So it's not really possible, except if I ask Weepee to provide me a second SIP user id?

 

[ChrisC_3CX]

If you can add a second SIP Trunk with a second account that has the DID configured then yes, you should be able to do this. Essentially you will need two SIP Trunks each with it's own unique DIDs configured.

Do bear in mind that based on the default template multiple Accounts are not supported for this provider by default. You will have to take a look at the guide for this SIP Provider, and specifically go to the end where it says "Multiple Account Support" for the relevant guide required to configure this.