[asterisk-users] two SIP phones as one line

[Marc Heckmann]

On Sun, 2006-15-10 at 12:11 -0400, Noah Miller wrote:
> Hi Mark -
> 
> > > > PhoneA is a SIP hard phone, phoneB is an analogue phone connected to a
> > > > SIP ATA. When an incoming call comes in, I would like to ring both
> > > > phones, but if phoneA is answered first, I would like phoneB to be
> > > > answered as well and left in a "off hook" state so that when someone
> > > > picks up the receiver of phoneB, they can hear and participate in the
> > > > conversation between the calling party and phoneA.
> > > >
> > > > I believe I would have to put both phones in a MeetMe conference, but
> > > > how to I "auto-answer" phoneB when phoneA has answered the call?
> 
> Two Questions:
> 
> 1. On the SIP phone, will this special conference function be needed
> on both incoming and outgoing calls, or just one of those?

just for incoming calls.

> 
> 2. Does the analog phone have to do anything else?  Should it work
> like a normal phone when it's not doing this special conference
> function?

yes. it should work like a normal phone otherwise.

> 
> You should be able to do this, like you said, by dumping both phones
> into a meetme conference.  There would be two tricky things here A)
> getting the analog phone to automatically go to a meetme conference
> whenever it is off-hook, B) getting outgoing calls from the sip phone
> into a meetme conference (incoming calls would be easy).
> 
> I think A) is probably not possible, given that you are using an
> external ATA device.  That device would somehow have to send the
> off-hook status back to asterisk via sip messages (I think there's
> actually a bounty for this).  This should be possible if you were
> using an internal zaptel card rather than an external gateway.  If the
> answer to question 

Actually I think I might be able to get it to auto-dial into a
conference when it is off hook. In any case, using a zaptel card is also
an option.

> 2) above is yes, you would have other problems,
> too.

ok, maybe it can check if the conference exists and if not simply act as
a normal phone? 

> 
> A good compromise to the problems of both 2) and A) would be to put
> the analog phone into a special context where you'd have a one digit
> press for each function (e.g. press 1 for normal phone, press 2 for
> conference).
> 
> Still, unless these users are really ornery, I'd probably just make
> them learn to transfer and dial into a conference.

The users (there are many of them) have a hard time adapting to change.

-m


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