On Oct 7, 5:40 pm, Greg Donald <gdon...@gmail.com> wrote:
> I've searched and found nothing helpful so I'm now asking for guidance.
>
> I have a client who wishes to spoof the caller id for his phones he
> assigns to his sales staff.  He wants the number to appear to be from
> his main office to better handle return calls from potential buyers.
>
> Is this possible?  After reading many posts on this list and much time
> Google'ng, I'm thinking it's not.  Meanwhile he is pointing to his
> internal phone system which does exactly as he described.  All his
> office phones appear to dial out from the same number as far as the
> receivers caller id is concerned.  How can I pull off the same on
> Android?
>
> Thanks,
>
> --
> Greg Donald
> destiney.com | gregdonald.com


Greg,  You can spoof the caller's number (referred to as the A-Number
or ANI) if you make the call through a VoIP provider.  There is no way
to spoof the ANI if calling with the SIM, because the ANI is attached
to the SIM in the operator's switch.  Many apps currently do this by
integrating their app with a SIP client such as PJSIP, and then
connecting the call through a VoIP provider that supports CLI (caller
line ID).  There are hundreds of VoIP providers out there that support
CLI - we use www.grnvoip.com.

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