On Thu, Jan 29, 2009 at 8:53 AM, Klaus Darilion <[email protected]> wrote:
> Problem: How to signal the called phone number? Usually the called phone > number is in the RURI, but the service provider retargets the RURI with > the REGISTER contact, thus this information is lost. > > [snip] > > Any other workarounds left? strong consensus was reached at IETF 73 in minneapolis for adopting: http://tools.ietf.org/id/draft-rosenberg-sip-target-uri-delivery-00.txt to solve this very problem. > So what is the preferred mechanism? What do vendors and service > providers implement? right now, it's a mess - everyone does there own thing. most rely on To, which is horribly broken (see [1]). Some use P-Called-Party-Id, some use route headers. > What should we implement in Asterisk? I'd recommend adding the History-Info target parameter solution, although bear in mind it's still in draft, so caveat emptor. ~ Theo 1 - http://wiki.voip.co.uk/sip/matching_using_to_header -- Theo Zourzouvillys Chief Technical Officer VoIP.co.uk - Commerce House, Telford Road, Bicester, OX26 4LD Tel: +44 1908 764 196 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
