function 'VALID_EXTEN'
[Synopsis] Determine whether an extension exists or not. [Description] Returns a true value if the indicated <context>, <extension>, and <priority> exist. WARNING!!!: This function has been deprecated in favor of the 'DIALPLAN_ EXISTS()' function [Syntax] VALID_EXTEN([context],extension[,priority]) [Arguments] context Defaults to the current context priority Priority defaults to '1'.
[See Also] Not available