Shared Line Appearance Trunk.
This application should be executed by an SLA trunk on an inbound call. The channel calling this application should correspond to the SLA trunk with the name trunk that is being passed as an argument.
On exit, this application will set the variable
SLATRUNK_STATUS to one of the following values:
trunk- Trunk name
M- Play back the specified MOH class instead of ringing
This documentation was imported from Asterisk Version GIT-master-7d17164