asterisk users - Dec 2004 - call waiting/ 3 way calling

HI;



I have an Asterisk with 10 "SIP" ip-phones, our pbx features are now:
Voicemail and Call Transfer.
How can I serve both "Call Waiting / 3 way calling" for our SIP
Phones.?/


Appreciate Any Help
Mohammad



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mohammad wrote:
> I have an Asterisk with 10 "SIP" ip-phones, our pbx features are
now: Voicemail and Call Transfer.
> How can I serve both "Call Waiting / 3 way calling" for our SIP
Phones.?/
This is what I call one of the "dirty little secrets of SIP".  On SIP 
phones (and H323) all the call control is done by the PHONE itself, not 
by the PBX.  Some SIP phones do not even support 3-way calling or 
supervised transfers (the BT101 comes to mind).  There really isn't 
anything Asterisk can do to make it work if the phone does not support 
the feature.

--Eric

-- 
I am seeking part or full time employment in the Greater Toronto Area, 
My preference is part time employment with some telecommuting, but all 
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