[OpenSER-Users] Presence BLF in OpenSer?

Steven C. Blair blairs at isc.upenn.edu
Thu Oct 11 15:13:30 CEST 2007


There is a module in development which implements BLA/BLF in OpenSER and supposedly works with Polycom phones. Given the lack of a standard I suspect you'd have to adjust your configuration to accept different event types from different phones to make them work with this module. We are just beginning to work with this module. I'll post more information about our experience as we learn more.

> -----Original Message-----
> From: users-bounces at openser.org [mailto:users-bounces at openser.org] On
> Behalf Of Iñaki Baz Castillo
> Sent: Thursday, October 11, 2007 8:49 AM
> To: users at openser.org
> Subject: [OpenSER-Users] Presence BLF in OpenSer?
>
> 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
>
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