Tele

Ft defines a call handling protocol similar to the one that has evolved with voice telephony since the late 19th Century. It is based on a canonical flow of these states with manifold exceptions:

1.   ACCEPT/ANSWER/READY 

   A subscriber moves to this state after connecting assuming no event, such as their or the network having set a different state.

2.    AFK/BUSY

   A subscriber controlled state which blocks calls until the subscriber sets READY.

3.   BUFF/WAIT 
4.   CALL/PAGE  
5.   DOWN/OFFHOOK/REJECT 

   All subscribers are initially are in this state and may move to it by personal or network events.