Asterisk Blog - Page 10

“general” section containt configurable value: maxretries = 2 ;How many chances the caller has to enter their number minlength = 8 ;Minimum number of digits that represent a valid phone number (default 10 – US/NA numbers)

Virtual private servers (VPS) or Virtual dedicated servers are a form of virtualization that splits a single physical server into multiple virtual servers. The practice of partitioning a single server so that it appeared as multiple servers have…

Synopsis: Returns the length of the argument given Description: LEN(<string>) Notes *CLI> core show function LEN Return value Returns integer length of the string. Example exten => s,1,Set(foo=${LEN(${mystring})}) See also Asterisk variables Asterisk functions Asterisk – documentation of…

Synopsis: Performs Mathematical Functions Description: MATH(<number1><op><number 2>[,<type_of_result>]) Perform calculation on number 1 to number 2. Valid ops are: +,-,/,*,%,<,>,>=,<=,==and behave as their C equivalents. <type_of_result> – wanted type of result: f, float – float(default) i, int – integer,…

Synopsis: Choose a random number in a range Description: RAND([min][,max]) Choose a random number between min and max. Min defaults to 0, if not specified, while max defaults to RAND_MAX (2147483647 on many systems). Notes *CLI> core show…

Synopsis Regular Expression: Returns 1 if data matches regular expression. Description REGEX(“<regular expression>” <data>) Is the regular expression tied to the beginning of the string? Notes *CLI> show function REGEX Return value Returns 1 if data matches regular…

Synopsis: Gets the specified SIP parameter from the current channel Deprecation SIPCHANINFO() is deprecated in 1.6. Use CHANNEL. Description: SIPCHANINFO(item) Valid items are: peerip: The IP address of the peer. recvip: The source IP address of the peer….

Synopsis: Gets SIP peer information Doesn’t work with RealTime. Description: SIPPEER(<peername>[:item]) SIPPEER(<peername>[,item]) – for Asterisk 1.6 Valid items are: ip (default): The IP address. port: The port number. (1.6) mailbox: The configured mailbox. context: The configured context. expire:…

Synopsis Gets the specified SIP header Description SIP_HEADER(<name>) Notes: SIP_HEADER() gives you only access to headers of the initial INVITE request (and not, for example, any progress messages (which may contain call rating information) or the final BYE…

Synopsis: Does a check on the specified file (NEW in Asterisk 1.4) Description: STAT(<flag>,<filename>) flag may be one of the following: d: Checks if the file is a directory e: Checks if the file exists f: Checks if…

Synopsis: Gets or sets timeouts on the channel. Description: TIMEOUT(timeouttype) Gets or sets various channel timeouts. The timeouts that can be manipulated are: absolute: The absolute maximum amount of time permitted for a call. A setting of 0…

Synopsis: NULL Test: Returns 1 if NULL or 0 otherwise Description: ISNULL(<data>) Notes *CLI> show function ISNULL   Return value Returns 1 if NULL or 0 otherwise. Example exten => s,1,Set(foo=${ISNULL(${var1})})   See also Asterisk variables Asterisk functions…

Synopsis Temporal Conditional: Returns the data following ‘?’ if true else the data following ‘:’ Description IFTIME(<timespec>?[<true>][:<false>]) Times before Asterisk 1.6.2 are only accurate down to the 2-minute interval. So 12:01 is treated the same as 12:00. Starting…