This forum shows an old topic somewhat similar to this, but over PSTN.
I would like to get some guidance for how to use Caller-ID spoofing over a SIP forward that I am testing.
I have enabled the spoofing (field X_SpoofCallerID) in both the ITSP profiles for SIP.
My inbound call route is the following:
{(Mtesting):vg3(9991234)},{(Mreject):sp1(2125551234)}...
As I will explain, what else should I put near vg3 to enable spoofing the call with the Caller-ID of the call that matches my "testing" digit map?
My VG3 uses the technique listed in another thread for
tf.callwithus.com for toll-free calls.
When I receive a call on my PSTN line that matches a known set of Caller-ID's, I want to forward them through to a specific SIP URI, such as my softphone. This forwarding is working but I want to do it so that the call will come through with the original call's Caller-ID, not the caller ID of my SP service.
My forward is working via the LINE port InboundCallRoute. Within the parameter I am calling out through a VG because I am using a different SIP configuration than my normal SP configuration.
By using a digitmap for the set of CID's that I want to match and forward I suspect that I can use a backreference, and that I will need to use the > character within the forward rule.
And since this is receiving CID with Name on my PSTN line, and I am spoofing a SIP call to a SIP extension, is there anything more I need to do so that the CID-Name field will be populated within the SIP header? Are there any other SIP header fields I can fill out to try to distinguish that this is my PSTN line's received calls?
When I am home I am likely to answer these calls on my regular phone handset, but if I am away, but have a SIP phone with me and online, I think I should be able to easily answer my ringing PSTN line from a remote location with this technique. Question: will the Obi take my PSTN line off hook only when the SIP call answers?
And for calls that I want to reject, I already have another rule in place (discussed in another thread), for calls from known telemarketers who have been told to not call my PSTN line again. I still enjoy this when the Obi spares me from having to answer such calls. I would like to add the CID spoofing capability there as well.