freeswitch的dialplan中condition变量

fs中dialplan中的condition变量可以是channel变量、内置变量

内置变量有：

The following variables, called 'caller profile fields', can be accessed from condition statements directly:

• context Why can we use the context as a field? Give us examples of usages please.
• rdnis Redirected Number, the directory number to which the call was last presented.
• destination_number Called Number, the number this call is trying to reach (within a given context)
• dialplan Name of the dialplan module that are used, the name is provided by each dialplan module. Example: XML
• caller_id_name Name of the caller (provided by the User Agent that has called us).
• caller_id_number Directory Number of the party who called (caller) -- can be masked (hidden)
• ani Automatic Number Identification, the number of the calling party (caller) -- cannot be masked
• aniii The type of device placing the call ANI2
• uuid Unique identifier of the current call? (looks like a GUID)
• source Name of the FreeSWITCH module that received the call (e.g. PortAudio)
• chan_name Name of the current channel (Example: PortAudio/1234). Give us examples when this one can be used.
• network_addr IP address of the signaling source for a VoIP call.
• year Calendar year, 0-9999
• yday Day of year, 1-366
• mon Month, 1-12 (Jan = 1, etc.)
• mday Day of month, 1-31
• week Week of year, 1-53
• mweek Week of month, 1-6
• wday Day of week, 1-7 (Sun = 1, Mon = 2, etc.) or "sun", "mon", "tue", etc.
• hour Hour, 0-23
• minute Minute (of the hour), 0-59
• minute-of-day Minute of the day, (1-1440) (midnight = 1, 1am = 60, noon = 720, etc.)
• time-of-day Time range formatted: hh:mm[:ss]-hh:mm[:ss] (seconds optional) Example: "08:00-17:00"
• date-time Date/time range formatted: YYYY-MM-DD hh:mm[:ss]~YYYY-MM-DD hh:mm[:ss] (seconds optional, note tilde between dates) Example: 2010-10-01 00:00:01~2010-10-15 23:59:59

For example:

<condition field="network_addr" expression="^192\.168\.1\.1$"/>  <!-- network address=192.168.1.1 ><condition mon="2">   <!-- month=February -->

详情http://wiki.freeswitch.org/wiki/Dialplan_XML#Conditions