6 May
2014
6 May
'14
3:12 a.m.
On 05 May 2014, at 19:21, Joel White <joelewhite(a)gmail.com> wrote:
I am working on enabling presence and bla in a
Kamailio + FreeSWITCH environment
All handsets are Polycom with a handful of Grandstream ATA's
I enabled presence and presence_xml
I have not got it to work as I keep seeing this meesage in the logs
NOTICE: presence [subscribe.c:1030]: handle_subscribe(): Unsupported presence event
call-info
When I searched online for this error, the answers I got were saying this was a
Linksys/Snom message....
How do I get presence to work properly?
By learning how it works ;-)
SIP has what we call event packages. These are mapping states of an object. A server can
learn the state internally (through one of our PUA* modules) or by getting PUBLISH
statements from the object.
Each event package has a name - presence, dialog and many more.
http://www.iana.org/assignments/sip-events/sip-events.xhtml
To get what you call presence to work you need to select which event packages you want to
work with, depending on what you want to do. If you want to subscribe to certificates,
it's "certificate", if it's voicemail it's
"message-summary". For blinking lamps, I would say "dialog" and for
buddy-lists and "I'm in a meeting" type presence, it's simply
"presence". There are many vendor-specific packages and solutions for
"bla".
When you've made your choice, select the proper kamailio modules, configure all your
clients to the same event package if possible and things will start working. Now, if a
phone use "call-info" that's not IETF/IANA specified, and another device use
"presence" and a third one "dialog" you will not get any
interoperability.
The error message above indicates "call-info" and kamailio says it doesn't
understand this event package with the current Kamailio configuration. Read the docs for
all the pua* and presence* modules in Kamailio and start solving this puzzle. I would go
for "dialog" for most of the cases with blinking lamps, but that's my
personal preference.
/O