[Kamailio-Users] BLF and MWI problem on Grandstreams

David econsultation.ca at spam.lublink.net
Thu Oct 8 17:21:04 CEST 2009


What I meant was :

MWI ( presence message-summary ) not MWI ( Dialog message-summary ).

David

David a écrit :
> 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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>
>
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