diff options
Diffstat (limited to 'doc/extensions.txt')
-rwxr-xr-x | doc/extensions.txt | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/doc/extensions.txt b/doc/extensions.txt index 0fb2fd3b6..bab08d319 100755 --- a/doc/extensions.txt +++ b/doc/extensions.txt @@ -1,20 +1,56 @@ -Extensions are routed according to priority, and may be based on any set -of digits, #, and *. For each extension, several actions may be listed -and each given a priority. When each action completes, it generally moves -to the next priority (except for some modules which use explicitly GOTO's. +The Asterisk dialplan +===================== + +The Asterisk dialplan is divided into contexts. A context is simply a group +of extensions. For each "line" that should be able to be called, an extension +must be added to a context. Then, you configure the calling "line" to have +access to this context. + +If you change the dialplan, you can use the Asterisk CLI command +"extensions reload" to load the new dialplan without disrupting +service in your PBX. + +Extensions are routed according to priority and may be based on any set +of characters (a-z), digits, #, and *. Please note that when matching a +pattern, "N", "X", and "Z" are interpreted as classes of digits. + +For each extension, several actions may be listed and must be given a unique +priority. When each action completes, the call continunes at the next priority +(except for some modules which use explicitly GOTO's). + +When each action completes, it generally moves to the next priority (except for +some modules which use explicitly GOTO's. + Extensions frequently have data they pass to the executing application -(most frequently a string). There are some reserved application names: +(most frequently a string). You can see the available dialplan applications +by entering the "show applications" command in the CLI. + +In this version of Asterisk, dialplan functions are added. These can +be used as arguments to any application. For a list of the installed +functions in your Asterisk, use the "show functions" command. - GoTo: Go to a specific extension - Answer: Answer the line, if it hasn't already been answered +* Example dial plan + +The example dial plan, in the configs/extensions.conf.sample file +is installed as extensions.conf if you run "make samples" after +installation of Asterisk. This file includes many more instructions +and examples than this file, so it's worthwile to read it. -Also, there are some extensions with important meanings: +* Special extensions + +There are some extensions with important meanings: s: What to do when an extension context is entered (unless overridden by the low level channel interface) + This is used in macros, and some special cases. + "s" is not a generic catch-all wildcard extension. i: What to do if an invalid extension is entered + h: The hangup extension, executed at hangup t: What to do if nothing is entered in the requisite amount of time. + T: This is the extension that is executed when the 'absolute' + timeout is reached. See "show function TIMEOUT" for more + information on setting timeouts. And finally, the extension context "default" is used when either a) an extension context is deleted while an extension is in use, or b) a specific |