On Sat, 31 Jul 2004, Paul Mahler wrote:
You can easily ring different phones at the same time within the dial command. For example,
SIP/4024&${PRITRUNK1}/16505551212&${PRITRUNK1}/14155551212
A blind transfer will move the call to the next phone. Or you can park the call.
That's not what I want to do. With a traditional PBX or PSTN setup I can have more than one phone sharing the same extension. What I want to do is to be able to have one extension (or line) on say 3 phones. When I pick up the phone on one, the other two are alerted that the line is engaged and should give a visual indicator on the screen that the line is in use. Say I want someone to join in on the conversation, I'd rather much have them be able to just lift the receiver and begin to talk rather than have to do conferencing.
This is done on PSTN (normal home phone), and I've seen it done on PBX's such as the AT&T Merlin and NT Meridian systems. Since the application I'd be setting up is basicly upgrading from PSTN to VOIP I'd like to keep that feature of being able to share a call (w/o conference) or pick up a call on another phone without having to use transfer (blind or regular).
Also I'd like to say I believe this is possible with the CCM otherwise how could an agent (operator) be able to monitor which extensions are in use with the 7960 expansion device?
[snip]
The short answer is: "No, Asterisk does not support this out of the box, and even if it did, Cisco phones with SIP images do not support this out of the box."
The medium answer is: "I have no idea if any of the SCCP (skinny) drivers support the 79xx phones for remote indication lamps. I gave a 7914 operator console to JerJer a while back to see if he could get that running, but no news lately. I have completely no clue on three-way (or barge-in, or shared line, or whatever you want to call it) with SCCP."
The long answer is: If you're marginally handy with C and have some spare time, you might be able to do this with some of the SIP phones. The Polycom IP500 and IP600 support the SUBSCRIBE/NOTIFY message transmissions for indicator lamps, which seems to almost-sort-of-maybe supported in Asterisk, but not quite. I haven't had time to experiment with those phones enough with Asterisk to see what would be required to make it fully operational, and I doubt I'll have any time to do it in the near future, but you could buy one yourself and see what you get running. Once you've figured that out and corrected *'s code for presence and indicators, it should be a short journey to create a new channel type that represents existing channels and allows a third extension to "dial" an existing call leg, a la chan_local, but different. See my discussion on the chan_multi idea here:
http://www.mail-archive.com/[EMAIL PROTECTED]/msg04117.html
Feel free to beat your local Cisco representative around the head and neck with a blunt instrument and describe to them how they're losing the SIP battle with their (apparent) intentional crippling of the SIP image on the 79xx series.
JT _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
