Waits for an extension to be entered.
This application waits for the user to enter a new extension for a specified number of seconds.
seconds- Can be passed with fractions of a second. For example,
1.5will ask the application to wait for 1.5 seconds.
( x )- Provide music on hold to the caller while waiting for an extension.
x- Specify the class for music on hold. CHANNEL(musicclass) will be used instead if set
dialindications tone on channel while waiting for digits.
This documentation was imported from Asterisk Version GIT-16-7a4a83a