Hi Bob
Are you suggesting something along the lines of putting the callee's set - or sets belonging to members of s group - on hold after sending the initial INVITE? Or putting each group member's set on hold and leaving a call up - but on hold - until a caller leaves a group?
So long as each set has two or more lines, normal calling should work, too: each user would have their regular extension and an extension that's dedicated to PTT type calls.
Is that along the lines of what you're suggesting, or am I completely missing the mark?
Thanks,
Larry
Why not just use re-INVITEs with a=sendrecv and a=recvonly?On Sun, Dec 13, 2015 at 2:26 AM, ik <idokan@gmail.com> wrote:In theory, if a phone support the P-Answer-State header, it will work.On Fri, Dec 11, 2015 at 10:31 PM, Larry Morley <lmorley@neny.cslimits.net> wrote:_________________________________________________________________________Mike (and anyone else who reads this):
Is there a standard for PTT on SIP, either formal or ad hoc? If not, do you know of anywhere there's a write up of an actual or a proposed implementation?
I'm interested in this functionality, too. We have a large public safety market here that makes heavy use of PTT.
Also, are you aware of any SIP capable PTT handsets? And any portables that can carry both, for example, 800 band radio and GSM?
Thanks,
Larry Morley
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