SendText( ) Sends text to the channel
SendText(text)
Sends text on a channel, if text transport is supported. If the channel does not support text transport, and there exists a priority n+101 (where n is the current priority), execution will continue at that step. Otherwise, execution will continue at the next priority level.
Returns 0 if the text was sent correctly or if the channel does not support text transport; otherwise, returns -1.
exten => 123,1,SendText(Welcome to Asterisk)