[Kamailio-Users] Help me on 'No matching subscription dialog found'

[Iñaki Baz Castillo]

El Jueves, 18 de Febrero de 2010, Asterisk User escribió:
> Please shed some light on this.

The problem is the following:

After the first re-SUBSCRIBE with "CSeq: 2002 SUBSCRIBE" it seems that the 
client doesn't receive the 202 responses from the server, neither the NOTIFY.
Note that subsequent re-SUBSCRIBE's are *retransmissions* (same branch, same 
CSeq...).

The problem is that the client doesn't receive the second NOTIFY sent by the 
kamailio (with "CSeq: 2 NOTIFY") so it doesn't reply the 200 for the NOTIFY 
and Kamailio ends the subscription dialog. However I don't see retransmissions 
of the NOFIFY from Kamailio, very strange...

So I think you have some kind of network problem since the client doesn't 
receive subsequent requests (NOTIFY) or responses (202 to re-SUBSCRIBE's).
Are you in a local wired LAN? Well, I see that the client and server are in 
different subnets so I suspect there is a IP routing problem, or perhaps you 
have a NAT router between both networks, I don't know.

-- 
Iñaki Baz Castillo <ibc at aliax.net>