LINECALLREASON_ Constants

The LINECALLREASON_ bit-flag constants describe the reason for a call.

LINECALLREASON_CALLCOMPLETION

The call was the result of a call completion request.

LINECALLREASON_CAMPEDON

The call was camped on the address. Usually, it appears initially in the onhold state, and can be switched to using lineSwapHold. If an active call becomes idle, the camped-on call may change to the offering state and the device start ringing.

LINECALLREASON_DIRECT

This is a direct incoming or outgoing call.

LINECALLREASON_FWDBUSY

This call was forwarded from another extension that was busy at the time of the call.

LINECALLREASON_FWDNOANSWER

The call was forwarded from another extension that didn't answer the call after some number of rings.

LINECALLREASON_FWDUNCOND

The call was forwarded unconditionally from another number.

LINECALLREASON_INTRUDE

The call intruded onto the line, either by a call completion action invoked by another station or by operator action. Depending on switch implementation, the call may appear either in the connected state, or conferenced with an existing active call on the line.

LINECALLREASON_PARKED

The call was parked on the address. Usually, it appears initially in the onhold state.

LINECALLREASON_PICKUP

The call was picked up from another extension.

LINECALLREASON_REDIRECT

The call was redirected to this station.

LINECALLREASON_REMINDER

The call is a reminder (or "recall") that the user has a call parked or on hold for (potentially) a long time.

LINECALLREASON_ROUTEREQUEST

The call appears on the address because the switch needs routing instructions from the application. The application should examine the CalledID member in LINECALLINFO, and use the lineRedirect function to provide a new dialable address for the call. If the call is to be blocked instead, the application may call lineDrop. If the application fails to take action within a switch-defined timeout period, a default action will be taken. A service provider can use this constant only if the negotiated version on the line is 2.0 or higher. Otherwise the service provider should substitute LINECALLREASON_UNAVAIL.

LINECALLREASON_TRANSFER

The call has been transferred from another number.

LINECALLREASON_UNAVAIL

The reason for the call is unavailable and will not become known later.

LINECALLREASON_UNKNOWN

The reason for the call is currently unknown but may become known later.

LINECALLREASON_UNPARK

The call was retrieved as a parked call.

No extensibility. All 32 bits are reserved.

The LINECALLREASON_ constants are used in the dwReason member of the LINECALLINFO data structure.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP3 or later.
  Windows 95/98: Requires Windows 95 or later.
  Version: Requires TAPI 2.0 or later.
  Header: Declared in Tapi.h.

See Also

LINECALLINFO, lineDrop, lineRedirect, lineSwapHold