[Asterisk-Users] incoming cid translation tables

[Florian Overkamp]

Hi,

> -----Original Message-----
> How does one do translation for calls that come in from other 
> pbx's where the incoming caller ID is an internal extension 
> number on their pbx?  Eg.  when I get a call from 
> Free-World-Dial the CID shows up as "429102" which is 
> essentially their internal extension number sans any routing 
> prefix.  To dial the number back I need to dial the extension 
> with FWD's routing prefix prepended or 1-393-942-9102.  Is 
> there some simple way to route all the incoming FWD calls to 
> a context that prepends "393-9" to their 6-digit prefixes?  
> (And for extra credit "393-99" to their 5-digit prefixes?)  
> Unless I can fix up their CID, the dialback buttons on the 
> phone (and in voicemail) are useless.

There were a few suggestions on this, but I thought I'd put this one in.

Each of my inbound 'lines' go to a specific context, which fixes up issues
with the numbering (extension and callerid) and then routes to a main
context for inbound traffic.

Example:

[fwd]
; Inbound traffic from FWD

; No callerid, nothing to fix
exten=_X./,1,NoOp

; Fix callerid on 6-digit numbers
exten=_X./_XXXXXX,1,SetCIDNum(3939${CALLERIDNUM},a)
; Fix callerid on 5-digit numbers
exten=_X./_XXXXX,1,SetCIDNum(39399${CALLERIDNUM},a)

; Jump to the normalised inbound-traffic context
exten = _X.,2,Goto(inbound-traffic,${EXTEN},1)