On Monday, March 18, 2013 12:20 PM, Lee Riemer <mailto:LRiemer at bestline.net> wrote:
Diversion header?
I already tried that:
On Saturday, March 16, 2013 1:29 AM, Nathan Anderson <> wrote:
2) When a call forward occurs on the PSTN, RDNIS/RGN (forwarding number) is typically included in the SS7 signalling at the final switch. There are a couple of SIP header fields that people have conjured up to fill a similar role: Diversion (which was described in an IEFT draft and has seemingly become a "de facto" standard of sorts, much like Remote-Party-ID was before PAI arrived), and History-Info (which actually made it into an RFC, 4244). Perhaps, in the event of a forwarded call, it would make sense for term providers to use Diversion or History-Info to inform them of what to use as ANI. I attempted to send calls out with one field or the other included in the header, but it made no difference: either PAI (if present) or From (if PAI not present) continued to be used as the sole source for both ANI and CNID.
-- Nathan Anderson First Step Internet, LLC nathana at fsr.com