Quote from: Everton on December 27, 2011, 07:43:56 AMAssuming you have "regular" voip provider such as anveo setup on SP2 and you have it setup on the web portal to pass thru original CID, is it possible to do a blind transfer using, lets say, SP2 as the trunk for the blind transfer?
This is a really tough one, because the OBi has so many restrictions on caller ID spoofing.
I can think of only two ways that should work:
1. If the original call comes in via a "regular" provider that supports call transfer, e.g. Callcentric, and you use that provider when blind transferring, you can set up the OBi to do a SIP REFER (see page 63 of manual). The transfer happens at the provider (the OBi does not need to bridge the call and just drops off) and the original caller's number gets passed as caller ID. I don't know whether this will work with Anveo.
2. If the call comes in via GV (and therefore must be bridged), for spoofing to work in the OBi, the SP2 provider must be one that accepts the caller ID in the From header. However, the vast majority of providers require you to put your account number there. It would work with a provider that accepts your account number in Auth ID, with an arbitrary From, but unfortunately AFAIK, Flowroute is the only one. Otherwise, you could use a provider that doesn't require your account number at all, i.e. they authenticate by IP address. Most "wholesale" providers work that way, but many require minimum payments or volume commitments that are impractical for residential or small business use. Voxbeam is an exception (minimum top-up is $50 and expires after one year, so any usage >$4/mo. is feasible).