[Kamailio-Users] BLF and MWI problem on Grandstreams

[David]

Hey,

Also, to get MWI ( Dialog message-summary ) to work with my linksys, I 
have this parameter :

modparam("presence", "max_expires", 2147483647 )

The Linksys never resubcribe to MWI. So watch out for that one.

David



Klaus Darilion a écrit :
> You are right - if the presence server is included in the "normal" 
> proxy, then the SUBSCRIBE-dialogs do not have a route-set and thus can 
> not be routed with loose_route. Adding the exception for PUBLISH too 
> should not be necessary as PUBLISH never have to-tag.
>
> It was fixed int he default config for 1.5. Take a look at
> http://openser.svn.sourceforge.net/viewvc/openser/branches/1.5/etc/kamailio.cfg?revision=5926&view=markup 
>
>
> regards
> klaus
>
> PS: Some older SNOM phones had a bug and sent in-dialog SUBSCRIBE 
> without using the Contact provided by the presence server, but instead 
> always using the initial SUBSCRIBE URI. Depending on your config this 
> can cause problems too.
>
>
>
>
>
> David schrieb:
>> All,
>>
>> I upgraded to Kamailio 1.5 and had a lot of problems getting BLF and 
>> MWI working. So I will list here some of my notes in case some body 
>> else ever has the same issue.
>>
>> Firstly, in my tests I am using a GXP2000, GXP2020 and a SPA962. I 
>> also tested with a SNOM360.
>>
>> my issue was the MWI seemed to fail after an hour, and I could not 
>> find why. So in searching my config, I found that when the phones 
>> were resubscribing to MWI and BLF, it was being caught in this 
>> condition :
>>
>> if (has_totag()) {
>>          if (loose_route()) {
>>               if (is_method("BYE")) {
>>                    setflag(1); # do accouting ...
>>                         setflag(3); # ... even if the transaction fails
>>               }
>>               route(4);
>>          }
>>          else {
>>               sl_send_reply("404","Not here");
>>               exit;
>>          }
>>     }
>>
>> My subscribe code handling was after this block, I noticed the issue 
>> from the 404 the grandstream was getting when trying to subscribe. I 
>> therefore added handling for the subscribe packets in this section, 
>> and my MWI and BLF seems to be working.
>>
>>    else if ( is_method("PUBLISH") || is_method("SUBSCRIBE") )
>>          {
>>               route(5);
>>               exit ;
>>          }
>>
>> Where route(5) does the appropriate handling of these two types of 
>> SIP packets.
>>
>> It should be noted, when I speak of MWI I am referring to presence 
>> message-summary which is sent via a publish by my media application. 
>> When I write BLF, I am referring to Presence Dialog.
>>
>> So when my phones were resubscribing, they are being sent a 404.
>>
>> I tested the Grandstream and the Linksys, and both seem to have the 
>> problem resolved. I will test this with the Snom tomorrow and post my 
>> results.
>>
>> David
>>
>>
>>
>>
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