[OpenSIPS-Users] Prefix and "To:" header field

[Brett Nemeroff]

For what it's worth...I've ran across tons of providers that don't like the
To URI not matching the R-URI. And yes, it's ridiculous and it means they
don't have a clue what they are doing.

You can use an actual B2BUA (sippy for example) to get around these
restrictions if you can't otherwise make them route things properly. I
wonder if the B2BUA module thats been discussed will accommodate this need.
Rather than dismiss the broken carrier and saying to leave them, I'd like to
find a way to address this issue.

Of course, that simply enables carriers to continue to operate their broken
switches without fixing them.. So I'm not sure what's better. ;)
-Brett


On Wed, Jul 29, 2009 at 11:02 AM, Julien Chavanton <jc at atlastelecom.com>wrote:

>  Thank you for the clarification, maybe this partner does not support SIP
> Proxy, unfortunatly we will have to deal with them, we can not drop them.
>
> not sure how to deal with this, diaplan ?      :-(
>
> ------------------------------
> *From:* users-bounces at lists.opensips.org on behalf of Iñaki Baz Castillo
> *Sent:* Wed 29/07/2009 4:58 PM
> *Cc:* users at lists.opensips.org
> *Subject:* Re: [OpenSIPS-Users] Prefix and "To:" header field
>
>  2009/7/29 Julien Chavanton <jc at atlastelecom.com>:
> > Drouting module do_routing(), does not modify the "To:" header field,
> > according to my reading this is ok, but it seems most softphone and sip
> node
> > modify both
> >
> > I have tested EyeBeam/X-Lite (dialplan prefixing)
>
> When an *UA* generates an INVITE, both To URI and request URI must be
> equal.
> When a proxy *routes* an INVITE, it can modify the request URI, but
> *never* the To URI.
>
>
> > Our partner does not llike when the "To:" header field is different then
> the
> > SIP INVITE, what is the suggested way of  dealing with this ?
>
> "Drop" your partner as it has no idea of SIP.
>
>
> --
> Iñaki Baz Castillo
> <ibc at aliax.net>
>
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