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VARIABLE_EXISTS()

Check if a dialplan variable exists or not.

Reference function dialplan
UUID()

Generates an UUID.

Reference function dialplan
URIENCODE()

Encodes a string to URI-safe encoding according to RFC 2396.

Reference function dialplan
URIDECODE()

Decodes a URI-encoded string according to RFC 2396.

Reference function dialplan
UNSHIFT()

Inserts one or more values to the beginning of a variable containing delimited text

Reference function dialplan
UNLOCK()

Unlocks a previously locked mutex. Returns '1' if the channel had a lock or '0' otherwise. Asterisk dialplan function reference.

Reference function dialplan
TXTCIDNAME()

Looks up the given phone number in DNS to retrieve the caller id name. The result will either be blank or be the value found in the TXT record in DNS.

Reference function dialplan
TRYLOCK()

Attempt to obtain a named mutex.

Reference function dialplan
TRIM()

Trim leading and trailing whitespace in a string

Reference function dialplan
TOUPPER()

Convert a string to uppercase in the Asterisk dialplan. Useful for normalizing input before pattern matching or display formatting.

Reference function dialplan
TONE_DETECT()

Asynchronously detects a tone

Reference function dialplan
TOLOWER()

Convert a string to lowercase in the Asterisk dialplan. Useful for normalizing input before pattern matching or database lookups.

Reference function dialplan
TIMEOUT()

The timeouts that can be manipulated are: absolute: The absolute maximum amount of time permitted for a call. Setting of 0 disables the timeout.

Reference function
TESTTIME()

Sets a time to be used with the channel to test logical conditions.

Reference function dialplan
TALK_DETECT()

Raises notifications when Asterisk detects silence or talking on a channel.

Reference function dialplan
SYSINFO()

Returns system information specified by parameter.

Reference function dialplan
STRREPLACE()

Replace instances of a substring within a string with another string.

Reference function dialplan
STRPTIME()

Returns the epoch of the arbitrary date/time string structured as described by the format.

Reference function dialplan
STRFTIME()

Returns the current date/time in the specified format.

Reference function dialplan
STRBETWEEN()

Inserts a substring between each character in a string.

Reference function dialplan
STIR_SHAKEN_ATTESTATION()

Sets STIR/SHAKEN Attestation parameters on an outgoing channel.

Reference function dialplan
STIR_SHAKEN()

Gets the number of STIR/SHAKEN results or a specific STIR/SHAKEN value from a result on the channel.

Reference function dialplan
STAT()

> Note > > If 'live_dangerously' in 'asterisk.conf' is set to 'no', this function can only be executed from the dialplan, and not directly from extern...

Reference function
STACK_PEEK()

Read the calling 'c'ontext, 'e'xtension, 'p'riority, or 'l'abel, as specified by which, by going up n frames in the Gosub stack.

Reference function dialplan
SRVRESULT()

Retrieve results from an SRVQUERY.

Reference function dialplan
SRVQUERY()

Initiate an SRV query.

Reference function dialplan
SQL_ESC_BACKSLASHES()

Escapes backslashes for use in SQL statements.

Reference function dialplan
SQL_ESC()

Escapes single ticks for use in SQL statements.

Reference function dialplan
SPRINTF()

Parses the format string specified and returns a string matching that format. Supports most options found in sprintf(3).

Reference function dialplan
SPEECH_TEXT()

Gets the recognized text of a result.

Reference function dialplan