On Thu, 2010-03-04 at 16:09 -0500, M. Ranganathan wrote:
> On Thu, Mar 4, 2010 at 3:57 PM, Marcello Manzardo <[email protected]> 
> wrote:
> > I am using  4.0.4-017289   ecs-centos5
> >
> >
> >
> > I have setup flowroute ITSP but experiencing about a 1 min delay until a
> > call goes through.
> >
> > Tech support from flowroute pointed to a wrong field in the SIP INVITE that
> > is generated by sipX.
> >
> > The field in question is the “Route” field that is not supposed to be there
> > according to RFC 3261 (section 16.12.1). It is that route field that is
> > causing the delay according to tech support.
> 
> 
> That is not correct.  For SipXbridge to work, it is a requirement that
> RFC 3261 be supported. It is quite legal in Rfc 3261 to put a loose
> route header on an INVITE.
> 
> 
> 
> I am quite sure there is something else wrong.

> > INVITE sip:[email protected];user=phone SIP/2.0
> > Route: <sip:70.167.153.130:5060;transport=udp;lr>

More specifically - that Route header points to exactly the same proxy
that resolving sip.flowroute.com finds, so there's not a thing wrong
with it.   The section that flowroute cited is just a list of examples;
section 16.12 says :

      2.  The proxy will inspect the URI in the topmost Route header
          field value.  If it indicates this proxy, the proxy removes it
          from the Route header field (this route node has been
          reached).

that's exactly what that Route header does, so they should remove it and
resolve the request URI to route the call.

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