[Kamailio-Users] OpenSER+Asterisk+BLF

[Mark Sayer]

We are needing to modify the configure of a currently operating 
OpenSER to properly relay the SUBSCRIBE and SIP-NOTIFY messages that 
are sent between Asterisk and a phone that supports BLF (like the 
Snom 300 or Yealink T26). Our setup includes an OpenSER 1.2 & 
Asterisk 1.4.17 in the same box. OpenSER performs all registration, 
authentication and NAT. Asterisk handles the media and the accounting.

In a pure Asterisk environment a "hint" would be setup in the 
Asterisk extensions.conf file and the phone (UA) would SUBSCRIBE to 
that HINT. Once Asterisk has registered that UA to the HINT then it 
sends SIP-NOTIFY messages to the UA as the status of the channel 
changes (available, ringing, busy).

Our current openser.cfg file makes no mention of either SUBSCRIBE or 
NOTIFY which is an obvious reason that my Asterisk installation never 
registers the UA to the HINT.

Is anyone interested in getting paid to fix this for us (we're too 
stupid to do it ourselves) or to offer another solution for 
controlling BLF in this setup.

Thanks,
Mark