Call states

A call always has a definite state, which depends on whether the call is being established, is active, or has just ended. The call ends with state IDLE, at which point it you may remove it from your internal call management structures. You can also find the call states in file TAPI.H in your development environment. There the states have the prefix LINECALLSTATE_.

Identifier	Value (hexadecimal)	Description
IDLE	0x0001	Switch ready
OFFERING	0x0002	Incoming call
ACCEPTED	0x0004	User / device is handling the call
DIALTONE	0x0008	Receiver off hook
DIALING	0x0010	Caller is dialing
RINGBACK	0x0020	Ringing at other end
BUSY	0x0040	Telephone busy
SPECIALINFO	0x0080	Manufacturer-specific information
CONNECTED	0x0100	Parties connected
PROCEEDING	0x0200	Number complete, call is being established
ONHOLD	0x0400	Call held
CONFERENCED	0x0800	Call in conference
ONHOLDPENDCONF	0x1000	Conference is initiated
ONHOLDPENDTRANSFER	0x2000	Call is waiting for transfer
DISCONNECTED	0x4000	Call terminated
UNKNOWN	0x8000	Status unknown

CTI Client constants (C++ CTI API)

Call states