BLINDTRANSFER

Posted by VoIP Info , on April 14, 2005

${BLINDTRANSFER} contains the active SIP channel that blind transfered the call.

This is usefull if you are trying to determine who to bill, or if you are trying to figure out a call back number for the transfered call. You could do something like this:

example (not tested, use at your own risk):

exten => s,1,Noop(BLINDTR = ${BLINDTRANSFER})
exten => s,2,GotoIf($[${LEN(${BLINDTRANSFER})} > 0]?10) ;if there is anything in the blindtransfer then you want to do something
exten => s,3,Dial(SIP/${ARG1},45,tr)
exten => s,10,Noop(we have been blint xfered by: ${BLINDTRANSFER})

See Bug 3268