[Asterisk-Users] ALERT_INFO

[Hugh L. Johnson]

A call comes in I set the distinctive ring by setting variable
ALERT_INFO then dial a SIP channel.  The channel is answered, but then
the user forwards the call to another SIP channel.  ALERT_INFO is still
set.  

How can I clear the ALERT_INFO variable after the SIP channel is
answered so that when the call is forwarded the ring goes back to
"normal"?