asterisk users - Jan 2010 - Attended Transfer with REFER

Hi guys,

I am wondering (and have been unable to find out thus far) whether Asterisk
sets some special channel variables or something when a call is transfered
with the REFER method.
Basically, I'm trying to figure out if it is possible to somehow get a
transferred call back to the transferrer (as it is done with the built-in
atxfer) after X seconds (or an unsuccessful attempt).

Using a timeout in the Dial command is not suitable unless I am able to tell
somehow that the call in question is being forwarded (which is of course not
the case, as the Dial command is called befer the REFER is sent).

Can anyone think of a way to get the call back to the transferrer after this
timeout?

Best regards,
?rn Arnarson
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checkout ${BLINDTRANSFER}

On Tue, 26 Jan 2010 15:48:51 +0000, ?rn Arnarson  wrote: Hi guys, 
 I am wondering (and have been unable to find out thus far) whether
Asterisk sets some special channel variables or something when a call is
transfered with the REFER method. Basically, I'm trying to figure out if it
is possible to somehow get a transferred call back to the transferrer (as
it is done with the built-in atxfer) after X seconds (or an unsuccessful
attempt). 
 Using a timeout in the Dial command is not suitable unless I am able to
tell somehow that the call in question is being forwarded (which is of
course not the case, as the Dial command is called befer the REFER is
sent). 
 Can anyone think of a way to get the call back to the transferrer after
this timeout? 
 Best regards, ?rn Arnarson  

 
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26 jan 2010 kl. 16.48 skrev ?rn Arnarson:
> Hi guys,
> 
> I am wondering (and have been unable to find out thus far) whether Asterisk
sets some special channel variables or something when a call is transfered with
the REFER method.
> Basically, I'm trying to figure out if it is possible to somehow get a
transferred call back to the transferrer (as it is done with the built-in
atxfer) after X seconds (or an unsuccessful attempt).
> 
> Using a timeout in the Dial command is not suitable unless I am able to
tell somehow that the call in question is being forwarded (which is of course
not the case, as the Dial command is called befer the REFER is sent).
> 
> Can anyone think of a way to get the call back to the transferrer after
this timeout?
> 
THe transferred call is sent to a context set with the channel variable
TRANSFER_CONTEXT before you call DIAL().

In there, run DUMPCHAN to see which variables you have and then dial with a
timeout. After the timeout, dial back.

/O