FreeSWITCH 1.8

Variables

Variables in FreeSWITCH are associated to almost anything. You can think at variables as attributes of something. For example, before we defined the "destination_number" as an attribute of an incoming ("A leg") call, and we used it as a string to which we applied the "condition" (regex) of an extension, to decide if that extension's actions will be executed by the call, or if the extension (and its actions) has to be skipped because its condition "do not matches" the string contained by the variable "destination_number". "Variables" is the official name for all those call or session attributes.

For example, an incoming call has a big number of associated variables, referred to as "channel variables", or "call leg variables", or ...