Says a given number.
Say a given number, returning early if any of the given DTMF digits are received on the channel. Returns
0 if playback completes without a digit being pressed, or the ASCII numerical value of the digit if one was pressed or
-1 on error/hangup.
SAY NUMBER NUMBER ESCAPE_DIGITS [GENDER]
This documentation was imported from Asterisk version SVN-branch-1.8-r311874.