[OpenSER-Users] Presence BLF in OpenSer?

[Iñaki Baz Castillo]

Hi, many phones as Thomson S2030 or Grandstream 3000 allow presence BLF.
Unfortunatelly I think BLF (Busy Lamp Field) just works with Asterisk and it's 
not a RFC or a draft.

Thomson S2030 allow subscribing to a extension state and it generates this 
SUBSCRIBE:

-------------------------------------------------------------------------------
SUBSCRIBE sip:211 at domain.org:5061;user=phone SIP/2.0
Via: SIP/2.0/UDP 192.168.1.97:5061;branch=z9hG4bK4293581925314869375
From: <sip:210 at domain.org:5050>;tag=c0a80101-167c2d
To: <sip:211 at domain.org:5061>
Call-ID: 8b5c839-c0a80101-d-d5 at 192.168.1.97
CSeq: 1 SUBSCRIBE
Max-Forwards: 70
Event: dialog
Accept: application/dialog-info+xml
Expires: 3600
Contact: <sip:210 at 192.168.1.97:5061;user=phone>
User-Agent: THOMSON ST2030 hw5 fw1.52 00-14-7F-00-68-81
Content-Length: 0
-------------------------------------------------------------------------------


Is there any possibility to use this BLF feature with OpenSer in any way?


-- 
Iñaki Baz Castillo
ibc at in.ilimit.es