Formatting incoming caller ID

General Help
1

Hi there,

I’m trying to reformat the Caller ID associated to incoming calls for a specific trunk. Someone has suggested adding the below in extensions_custom.conf and pointing the context of the trunk to this context.

The caller ID doesn’t appear to be changed and I’m starting to tear my hair out!

What’s going wrong?

[from-trunk-custom]
exten => _X!,1,Set(CALLERID(num)=0${CALLERID(num):2:12})
exten => _X!,n,Goto(from-trunk,${EXTEN},1)

The typical incoming caller ID format would be 447123456789 (a UK mobile number as an example but prefixed with 44 and dropping the leading 0)

Thanks,

Paul

2

I’ve also just tried this, but it still doesn’t work:

[from-trunk-custom]
exten => X.,1,GotoIf($["${CALLERID(number):0:2}"!=“44”]?nochange)
exten => X.,n,Set(CALLERID(number)=0${CALLERID(number):2})
exten => _X.,n(nochange),Goto(from-trunk,${EXTEN},1)