[Kamailio-Users] What is wrong with this NOTIFY packet

Asterisk User asteriskeasy at gmail.com
Mon Feb 15 10:11:21 CET 2010


Thanks alot for your quick replies,
I didn't have double <> for To and From in my question if you check the
first thread again. :)
Want to add one more thing, Just to cross check, when I sent a NOTIFY packet
from Asterisk to extension directly, it works showing me blinking red light
on the phone!. And I can configure MWI on Grandstream phone.
Please have some more thoughts,
Thanks,
--SM


On Mon, Feb 15, 2010 at 2:31 PM, Alex Balashov <abalashov at evaristesys.com>wrote:

> On 02/15/2010 03:58 AM, Alex Hermann wrote:
>
>> On Monday 15 February 2010 09:25:41 Asterisk User wrote:
>>
>>> Now to implement MWI i send NOTIFY packet from Asterisk to Kamailio and
>>>  from kamailio to SIP extension (Grandstream GXP2000).
>>> here is the packet that travels from kamailio to extension and the
>>> response
>>> sent from extension to kamilio.
>>> ===========================
>>> NOTIFY sip:1111111 at arzoo.com <sip%3A1111111 at arzoo.com><
>>> sip%3A1111111 at arzoo.com <sip%253A1111111 at arzoo.com>>  SIP/2.0
>>> Max-Forwards: 10
>>> Record-Route:<sip:172.18.100.74;lr;nat=yes>
>>> Via: SIP/2.0/UDP 172.18.100.74;branch=z9hG4bK3c3.e1003f03.0
>>> Via: SIP/2.0/UDP 127.0.0.1:45382
>>> ;received=172.18.100.73;branch=z9hG4bK.4f83530d;rport=45382;alias
>>> Via: SIP/2.0/UDP 172.18.100.73:5060
>>> From:<sip:111 at arzoo.com <sip%3A111 at arzoo.com><sip%3A111 at arzoo.com<sip%253A111 at arzoo.com>
>>> >>
>>> To:<sip:1111111 at arzoo.com <sip%3A1111111 at arzoo.com><
>>> sip%3A1111111 at arzoo.com <sip%253A1111111 at arzoo.com>>>
>>>
>>
>> NOTIFY's are in-dialog requests. Your From and To header are missing the
>> required tags (and look a bit suspicious by themselves too because of the
>> double<>). The grandstream probably can't match the NOTIFY to the correct
>> subscription and follows a code path that for some reason decides to
>> answer
>> 415 instead of a 481.
>>
>
> Good eye!  That too.
>
> Basically, Granstream sucks.  Don't bother.
>
>
> --
> Alex Balashov - Principal
> Evariste Systems LLC
>
> Tel    : +1 678-954-0670
> Direct : +1 678-954-0671
> Web    : http://www.evaristesys.com/
>
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>
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