Page 481 - Asterisk™: The Future of Telephony

NoOp
NoOp [text]

Performs no operation. As a side effect, this command prints text to the Asterisk con-
sole. Usually used for debugging purposes.
Return value:
0
No channel, or variable not set

RECEIVE CHAR
RECEIVE CHAR timeout

Receives a character of text on a channel. Specify a timeout in milliseconds as the max-
imum amount of time to wait for input, or set to 0 to wait infinitely. Note that most
channels do not support the reception of text.
Return values:
-1 (hangup)
Failure or hangup
char (timeout)
Timeout
value
ASCII value of character, in decimal

RECORD FILE
RECORD FILE filename format escape_digits timeout [offset_samples] [BEEP] [s=silence]

Records the channel audio to the specified file until the reception of a defined escape
(DTMF) digit. The format argument defines the type of file to be recorded (wav, gsm,
etc.). The timeout argument is the maximum number of milliseconds the recording can
last, and can be set to -1 for no timeout. The offset_samples argument is optional; if
provided, it will seek to the offset without exceeding the end of the file. The BEEP ar-
gument will play a beep to the user to signify the start of the record operation. The
silence argument is the number of seconds of silence allowed before the function re-
turns despite the lack of DTMF digits or reaching the timeout. The silence value must
be preceded by s= and is also optional.
Return values:

-1
Failure

NoOp | 453