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