conf3way

Nikhil,

This is how I would implement '3 way conference' in Asterisk with the help
of dynamic features.
Assume 3 SIP friends 1110,1111 and 1112 in sip.conf. For 1110 in sip.conf,
context=test3way

Add following in applicationmap section of features.conf....

[applicationmap]

3way-start => **0,caller,Macro,3way-start
3way-conf => **1,caller,Macro,3way-conf
3way-noconf => **2,caller,Macro,3way-noconf

My dialplan would be....

[test3way]
exten => 1212,1,Noop(########## TLC Check ##########)
same => n,set(DYNAMIC_FEATURES=3way-start)
same => n,Dial(SIP/1111,30,m)


[dynamic-3way]
exten => _XXX.,1,Answer
exten => _XXX.,n,Set(CONFNO=1212)
exten => _XXX.,n,Set(DYNAMIC_FEATURES=)
exten => _XXX.,n,ConfBridge(${CONFNO},M)
exten => _XXX.,n,Hangup


[macro-3way-start]
exten => s,1,Set(CONFNO=1212)
exten => s,n,ChannelRedirect(${BRIDGEPEER},dynamic-3way,${CONFNO},1)
exten => s,n,wait(1)
exten => s,n,Set(DYNAMIC_FEATURES=3way-conf#3way-noconf)
exten => s,n,Dial(SIP/1112,,g)
exten => s,n,Set(DYNAMIC_FEATURES=)
exten => s,n,ConfBridge(${CONFNO},M)

[macro-3way-conf]
exten => s,1,ChannelRedirect(${BRIDGEPEER},dynamic-3way,${CONFNO},1)

[macro-3way-noconf]
exten => s,1,SoftHangup(${BRIDGEPEER})



You can dial 1212 from SIP Extension 1110 which will connect 1110 to 1111.
No while talking to 1111, 1110 can press **0 to invoke '3way-start' feature
which in turn call 1112.

Now while talking to 1112, 1110 can press **1 to start the conference.

I suggest you should go through features.conf for more information. This is
very basic dialplan for 3 way conference. You will have to add some more
stuffs to make it work in the way you want.

Hope this helps.
[SATISH]