[asterisk-users] two SIP phones as one line

Henry.L.Coleman henry.coleman at voip-pbx.ca
Sun Oct 15 02:09:48 MST 2006


The quirk of your old PBX is in fact exactly what happens when you put any
two analog phones on the same line. The easiest way to duplicate this is
to connect another analog phone to your ATA. Some analog phones can
indicate when the other is on the line and can put a call on hold locally.


Henry L.Coleman CEO
*VoIP-PBX* 1-866-415-5355
Toronto Ontario
Canada


> Hi,
>
> I am looking to replace a quirk of our old PBX system functionality with
> asterisk but after searching, archives, wiki, etc.. I cannot figure out
> how.
>
> Here is what I would like to do:
>
> 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?
>
> I suspect that this may not be possible with asterisk, but would like
> confirmation of that.
>
> Thanks in advance.
>
> -m
>
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