The precedence is Diversion > PAI > RPID > FROM? since in a forwarded call the original legs PAI/RPID/FROM can be retained but the diversion would indicate a change in originator. On 9/21/2018 7:41 AM, Pete Eisengrein wrote:
As mentioned, the P-Asserted-Id should do the trick. I can't find an RFC for it, nor where I saw this previously, but there is an order of precedence for the headers. I don't remember them all but I do know that
P-Asserted-Identity > Diversion > From
The other headers fit in there somewhere too, but I think PAI is really what you want.
On Thu, Sep 20, 2018 at 4:38 PM Peter Crawford <pdcraw27 at gmail.com <mailto:pdcraw27 at gmail.com>> wrote:
Hello voice-ops:
Enterprise admin here.
We just converted from ISDN to SIP (and changed providers) and we're seeing some undesirable billing behavior.? I'm hoping I can get some objective feedback from different providers.
If a call comes into our system, and we forward it off-net using the SIP trunks (using either "standard" call forwarding or a call forking/paralleling feature like Avaya's EC500 or Cisco's Single Number Reach), we send the call with the SIP FROM header of the original caller (which is desirable to preserve callerID).? We also include a Diversion Header with one of our phone numbers (the original destination of the call).
We're being billed based on the *original* calling number, which sometimes results in long distance charges, even if this leg of the call is local to us.? This is particularly onerous if the inbound call is international!
So, the question is- what *should* we be billed on: FROM or DIVERSION.
At one point, the provider indicated that P-Charge-Info was supported, but now backing away from that.
Do we have any recourse (technical or otherwise)?
Thanks.
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