[OpenSIPS-Users] B2B No TO TAG found

[Antonio Anderson Souza]

Hi,

I have on doubt, my scenario I have a SIP-Phone A that calls a SIP-Phone B
establish the calls, after some time the SIP-Phone B send a Refer with
Refer-To header pointing to a SIP-Phone C, the call scenario is working
properly, except that the Invite generated by the B2B scenario to transfer
the call to the SIP-Phone C is generated with the SIP-Phone B as From, so to
the SIP-Phone C seams that the SIP-Phone B are calling him, but who is
calling is SIP-Phone A.

There are some way to change this behavior in the B2B call scenario, or Can
i use the UAC module in the script to replace the From header?

Regards,

Antonio Anderson Souza
Voice Technology
http://www.antonioams.com


On Wed, Apr 14, 2010 at 4:44 PM, Antonio Anderson Souza <
antonioams at gmail.com> wrote:

> Anca,
>
> Thank you very much for your support, I've made the changes in my script
> and I got the refer scenarios working properly.
>
>
> Regards,
>
> Antonio Anderson Souza
> Voice Technology
> http://www.antonioams.com
>
>
> On Wed, Apr 14, 2010 at 6:31 AM, Anca Vamanu <anca at opensips.org> wrote:
>
>> Hi Antonio,
>>
>> You have to call b2b_init on the initial INVITE that creates the dialog.
>> And the B2B server will know to correctly treat the REFER when it comes.
>> That REFER message in fact will never go in the default route but in the
>> route with the name defined in the module parameter "script_req_route"
>> http://www.opensips.org/html/docs/modules/devel/b2b_entities.html#id227305
>> .
>>
>> Regards,
>>
>> --
>> Anca Vamanu
>> www.voice-system.ro
>>
>>
>>
>>
>>
>> Antonio Anderson Souza wrote:
>> > Hi,
>> >
>> > I'm creating a B2B scnarios to handle Refer request and execute the
>> > transfer process, I'm using the Refer scenario [1] as reference, but
>> > when the UAC sends the Refer to Opensips and the Script call the
>> > scenario and the following error is printed in the Log:
>> >
>> > *Apr 13 14:10:18 localhost opensips[8924]:
>> > ERROR:b2b_entities:b2b_tm_**cback: No TO TAG found *
>> >
>> > Follow bellow my b2b scenario [2], and the Cfg snippet [3].
>> >
>> > [1] - http://www.opensips.org/Resources/B2buaTutorial#toc15
>> >
>> > [2] - B2B Scenario:
>> > <?xml version="1.0"?>
>> > <scenario id="b2b-refer" name="Handle refer at server" param="0"
>> > type="script">
>> >   <init>
>> >     <bridge>
>> >       <server>
>> >         <id>server1</id>
>> >       </server>
>> >       <client>
>> >         <id>client1</id>
>> >         <type>message</type>
>> >         <destination>
>> >           <value type="header">Refer-To</value>
>> >         </destination>
>> >       </client>
>> >     </bridge>
>> >   </init>
>> >
>> >   <rules>
>> >      <request>
>> >        <refer>
>> >          <rule id="1">
>> >            <action>
>> >              <send_reply>
>> >                <code>202</code>
>> >                <reason>Accepted</reason>
>> >              </send_reply>
>> >              <end_dialog_leg/>
>> >              <bridge>
>> >                <client>
>> >                  <peer/>
>> >                </client>
>> >                <client>
>> >                  <id>client2</id>
>> >                  <destination>
>> >                    <value type="header">Refer-To</value>
>> >                  </destination>
>> >                </client>
>> >              </bridge>
>> >            </action>
>> >          </rule>
>> >        </refer>
>> >     </request>
>> >   </rules>
>> > </scenario>
>> >
>> >
>> >
>> > [3] - Cfg snippet
>> >
>> >         if (has_totag()) {
>> >                 # sequential request withing a dialog should
>> >                 # take the path determined by record-routing
>> >                 if (loose_route()) {
>> >                         if (is_method("BYE")) {
>> >
>> >   setflag(1); # do accounting ...
>> >                                 setflag(3); # ... even if the
>> > transaction fails
>> >                         } else if (is_method("INVITE")) {
>> >                                 # even if in most of the cases is
>> > useless, do RR for
>> >                                 # re-INVITEs alos, as some buggy
>> > clients do change route set
>> >                                 # during the dialog.
>> >                                 record_route();
>> >                         } else if (is_method("REFER")) {
>> >                                 xlog("L_ERR",
>> >                                         "Refer received the b2b
>> > scenario will be triggered [$fu/$tu/$ru/$ci]");
>> >                                 # Start B2B Script to handle the
>> > transference
>> >                                 *b2b_init_request("b2b-refer");*
>> >                                 xlog("L_ERR",
>> >                                         "Refer processed by the b2b
>> > scenario [$fu/$tu/$ru/$ci]");
>> >                                 exit;
>> >
>> >
>> > Does anybody have some idea to help me?
>> >
>> > Best regards,
>> >
>> > Antonio Anderson Souza
>> > Voice Technology
>> > http://www.antonioams.com
>> > ------------------------------------------------------------------------
>> >
>> > _______________________________________________
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>> > Users at lists.opensips.org
>> > http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>> >
>>
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