[Asterisk-Users] Caller ID problem

[Bill Petrisko]

On Thu, Mar 17, 2005 at 11:59:06AM -0500, Oswaldo Arratia wrote:
> I send a call with valid caller ID info (areacode+number); my provider gets
> the call and routes it properly, the end receiver gets the call and does not
> see the caller ID I sent, they just get 'Unknown Number'.
> 
> This remains true for some receivers, others using a different telephone
> company or cellular company do get the caller ID I sent.
> 
> Examples:
> Cingular, Verizon do not show my caller ID info
> Nextel, T-mobile do show my caller ID info

When we ran into this with certain carriers, it was because we
were using PRI NI-2 to our CLEC, but not setting the isdn numbering
type to 'national' (it was set to 'unknown' or something else.)

Apparently, some carriers look at that bit before deciding to 
accept/display the CLID, some don't.

Try setting the following in your zaptel.conf:
  switchtype=national

and see if it makes any difference.

bill