FreePBX Internals - Astricon 2008 - Print_Lindheimer - Asterisk-ES

FreePBX Internals
>>Summary
FreePBX implements its “extensions” as a combination of
Devices and Users
Your dialplan should always call macro-user-callerid to
determine the real identity of the calling device
FreePBX uses a handful of key macros when accessing trunks
to decipher a user and the appropriate callerid to be used as
well as to further manipulate dialed digits on each trunk
It’s easy to connect custom dialplans and destinations used in
call flows through the FreePBX Custom Extension and
Destination Registry