Manipulate CID over trunk

[ludovicomicoli]

Hi all

We need help for a configuration.

Basically we have an OXO connected to an Asterisk on internal context via SIP Trunk.
What we need is to add a prefix to the CALLERID when a call goes through the trunk.

For examle, if I have an internal with number 101 once it goes through specifica trunk the CID must be 67-101.

Any help is very appreciated.

Thanks