filename- File to play before reading digits or tone with option
context- Context in which to match extensions.
s- Return immediately if the channel is not answered.
i- Play filename as an indication tone from your
indications.confor a directly specified list of frequencies and durations.
n- Read digits even if the channel is not answered.
p- The extension entered will be considered complete when a
timeout- An integer number of seconds to wait for a digit response. If greater than
0, that value will override the default timeout.
This documentation was imported from Asterisk Version GIT-16-b8bf57dc38eefd53b