asterisk users - Mar 2008 - setting callerid across servers

I have a situation when a T1/PRI line comes into box 1
then uses SIP over to box 2 and all my phones are on box 2.
if the person is not at their desk on ring no answer I am calling their 
cell phone
which places the call back over SIP to box 1 and out the T1 .

How can I setup this configuration so the original caller ID will show up
on the cell phone.

Thanks,

Jerry

On Mar 11, 2008, at 3:25 PM, Jerry Geis wrote:
> I have a situation when a T1/PRI line comes into box 1
> then uses SIP over to box 2 and all my phones are on box 2.
> if the person is not at their desk on ring no answer I am calling  
> their
> cell phone
> which places the call back over SIP to box 1 and out the T1 .
>
> How can I setup this configuration so the original caller ID will  
> show up
> on the cell phone.
>
> Thanks,
>
> Jerry
>
>
Jerry,
What CID are you expecting to show on the cell phone? Based on what  
information
you have provided, the original call is coming outside of your system,  
and you will not
be able to duplicate their CID when you pass the call to your users  
cell phone.
You can always screen the call though, allowing the recipient to know  
who is calling them.
Niles