SendURL( ) Sets a variable to the specified value
SendURL(url[,option])
Requests that the client go to the specified URL. If the client does not support HTML transport, and there exists a priority n+101 (where n is the number of the current priority), execution will continue at that step. Otherwise, execution will continue at the next priority level.
Returns 0 if the URL was sent correctly or if the channel does not support HTML transport; otherwise, returns -1.
If the option wait is specified, execution will wait for an acknowledgment that the URL has been loaded before continuing and will return -1 if the peer is unable to load the URL.
exten => 123,1,SendURL(www.asterisk.org,wait)