User A *could* do it that way. But he also could do:
INVITE tel:123456
Via:.....
From: sip:UserA@whatever
to: tel:123456
...........
Paul
feng zhang wrote:
>
> Hi,
>
> think the scenario below:
>
> +--------+ +----------+ +---------+
> | User A |--------->| Proxy |-------->|PSTN-GW |
> +--------+ +----------+ +---------+
>
> User A is a sip phone ,and he want to call a PSTN phone, User A belongs to Proxy.
> User A forms the INVITE request this way :
>
> INVITE sip:123456@Proxy;user=phone SIP/2.0 <-- can not be "123456@PSTN-GW"
> Via:..... User A has no information
>about
> From: User A@Proxy PSTN-GW
> To:123456@Proxy <------ "123456@Proxy" too
> .........
>
> Right ?
>
> Best Regard.
>
> >It can use the same URI as the Request-URI.
> >
> >cheers,
> >(-:bob
> >
> >Robert F. Penfield
> >Chief Software Architect
> >Acme Packet, Inc.
> >130 New Boston Street
> >Woburn, MA 01801
> >[EMAIL PROTECTED]
> >
> >----- Original Message -----
> >From: "feng zhang" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Wednesday, August 14, 2002 8:24 AM
> >Subject: Re: [Sip-implementors] SIP uri for phone numbers
> >
> >
> >> Hi,
> >>
> >> But how to determine "To URL" in the INVITE request?
> >>
> >> like this: To: 1234567@GW;user=phone
> >>
> >> Best Regard
> >>
> >> >The hostname of the Request-URI should be the domain of the proxy since
> >the
> >> >proxy is suppose to know how to route the call. The rules for proxies in
> >RFC
> >> >3261 state that when the proxy is not responsible for the domain in the
> >> >Request-URI, it is suppose to forward it to the domain indicated in the
> >> >Request-URI.
> >> >
> >> >----- Original Message -----
> >> >From: "Andreas Bystr�m" <[EMAIL PROTECTED]>
> >> >To: "Sip Implemators" <[EMAIL PROTECTED]>
> >> >Sent: Wednesday, August 14, 2002 12:35 PM
> >> >Subject: [Sip-implementors] SIP uri for phone numbers
> >> >
> >> >
> >> >> I'm wondering if there are some recomendations how the sip address for
> >the
> >> >> TO-field should look like when making a call to PSTN. The environment
> >> >looks
> >> >> like :
> >> >>
> >> >> Terminal A -> Proxy -> GW
> >> >>
> >> >> and the user on terminal A is dialing the PSTN number 1234567. How
> >should
> >> >> the TO sip uri look like after the '@'? Should I insert my own ip
> >number,
> >> >> the ip of the Proxy, the ip of the GW or something else?. The terminal
> >is
> >> >> somewhat stupid and don't really know that this call should be
> >forwarded
> >> >to
> >> >> the GW, it is up to the proxy to decide. The user has entered the phone
> >> >> number 1234567 instead of an sip address when placing the call.
> >> >>
> >> >> Thanks in advance,
> >> >>
> >> >> Andreas
> >> >>
> >> >> ____________________________________
> >> >> Andreas Bystr�m
> >> >> Computer Engineer
> >> >>
> >> >> e-horizon Streaming Technologies
> >> >> Stadshusplatsen 2, 4th floor
> >> >> Box 172
> >> >> SE 14922 Nyn�shamn
> >> >>
> >> >> mail : [EMAIL PROTECTED]
> >> >> web : www.e-horizon.se
> >> >> phone : +46 8 524 201 80
> >> >> mobile: +46 708 85 23 35
> >> >> ____________________________________
> >> >>
> >> >> _______________________________________________
> >> >> Sip-implementors mailing list
> >> >> [EMAIL PROTECTED]
> >> >> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >> >>
> >> >
> >> >_______________________________________________
> >> >Sip-implementors mailing list
> >> >[EMAIL PROTECTED]
> >> >http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >> >
> >> >.
> >> _______________________________________________
> >> Sip-implementors mailing list
> >> [EMAIL PROTECTED]
> >> http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >>
> >
> >
> >.
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