[OpenSIPS-Users] MS teams, reinvite after ACK

[Miha]

ok, it does new seq invite, so not is is working.


thank you for help.
miha

Miha via Users je 6/2/2021 ob 10:11 AM napisal:
> Hello
>
> i manage to fix this. I did not do t_relay() also seq Invites, after 
> this everything works ok.
>
> Just on question, regarding transfers, i see that MS Teams send REFER 
> in which trafter is defined. How do you deal with this? You do not 
> allow REFER from MS teams and hope that MS teams will send new INVITE?
>
>
> thank you
> miha
>
> Jeff Pyle je 6/1/2021 ob 3:26 PM napisal:
>> Miha,
>>
>> First, do you need to use "mtsbc.test.com:5060 
>> <http://mtsbc.test.com:5060>" in the first record_route_preset() 
>> param?  Can you use the IP address of your proxy instead?  FQDNs are 
>> legal of course, but outside of MS Teams' implementation, they're 
>> rarely required.  It's just another thing to go wrong. Especially 
>> while testing.
>>
>> The ACK to the 200 OK is a sequential (in-dialog) request.  It's not 
>> part of the original INVITE transaction. Your script will have a 
>> section like
>>
>> if (has_totag()) {
>> if (loose_route()) {
>> t_relay();
>> }
>> }
>>
>> for sequential requests through a loose-routing proxy.  This is very 
>> oversimplified and yours will have more.  In this section, however, 
>> is where you'll process the ACK because it has a to-tag (line 293) 
>> and a route header (line 298) so the conditions match.
>>
>> Use xlogs or the debug tool of your choice to diagnose what's 
>> happening in this section with the ACK.  In my scripts, I use global 
>> flag 0 to indicate when I want logging.  So, I might have something 
>> like this:
>>
>>        if (has_totag()) {
>>                if (is_gflag(0)) xlog("L_NOTICE", "...in-dialog $rm 
>> request\n");
>> # ...do all the things...maybe more logging like the line above...
>>
>>
>> - Jeff
>>
>>
>> On Tue, Jun 1, 2021 at 4:57 AM Miha via Users 
>> <users at lists.opensips.org <mailto:users at lists.opensips.org>> wrote:
>>
>>     Hello
>>
>>
>>     I have an issue and I am unable to find out what is wrong.
>>     Incoming calls are working but when doing outbound call after
>>     200OK, which is send to Teams I get back ACK and after that Teams
>>     do again initial. I guess this is not ok.
>>
>>     I am doing this for outband calls:
>>
>>
>>     xlog("L_INFO", "rtp rtps record route");
>>                 record_route_preset("mtsbc.test.com:5060
>>     <http://mtsbc.test.com:5060>","mtsbc.test.com
>>     <http://mtsbc.test.com>:5061;transport=tls");
>>                 add_rr_param(";r2=on");
>>
>>     I am pasting here trace. Opensips is in the middle.
>>
>>     Thank you for help!
>>
>>     https://pastebin.com/qM0dMiCc <https://pastebin.com/qM0dMiCc>
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>
>
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