On Wed, Jan 28, 2009 at 12:56 PM, Iñaki Baz Castillo <[email protected]> wrote: > 2009/1/28 Iñaki Baz Castillo <[email protected]>: >> Hi, that's not necessary at all as it's already documented in the same >> RFC 3515 (REFER method): >> >> http://tools.ietf.org/html/rfc3515#section-4.1 > > And it's also fully explained and documented in RFC 5359 "Session > Initiation Protocol Service Examples":
> ringback tone or possible clipping. Suitable authorization of the > REFER and explicit authorization of the triggered INVITE by Bob are > necessary. > Correct. It is entirely possible to do 3pcc without INVITE. However, the phone must support out of dialog REFER. This poses a security risk which can be mitigated by authentication of the REFER. > > -- > Iñaki Baz Castillo > <[email protected]> > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors -- M. Ranganathan _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
