I have been trying to get the 7970 (running SIP firmware) to display presence
information about other extensions. Thus far, I have been unsuccessful. Does
anyone have BLF working on the SIP-loaded 7941/7961/7970/7971? I have been using
the following as a guide for my work:
http://www.voip-info.org/wiki/view/Asterisk+Presence+for+Cisco+79x1+Phones
I have successfully implemented every step (although there are a few minor
errors in the code on that page that I have corrected) except for the part where
the 7970 has to connect to Asterisk via SIP/TCP. I have chan_sip.c patched with
the SIP/TCP patch to allow for connectivity, but I cannot seem to force the 7970
to connect that way.
I have read several posts that indicated that the SIP firmware does not support
presence information as of yet, but supposedly, whoever wrote that article above
has it working somehow.
Does anyone know how to make the phone connect over TCP? Or, better yet, does
anyone have a working method that they would be willing to share? These are
great phones but in the environment that we're in they are almost useless if
we don't know who's on a call when. I'd rather not go the SCCP route
unless I absolutely have to.
Thanks!
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