LINEDEVSTATE

LINEDEVSTATE_BATTERY = 0x00008000

The battery level has changed significantly. This condition applies to cellular phones.

LINEDEVSTATE_CLOSE = 0x00000400

The line has been closed by another application.

LINEDE VSTATE_COMPLCANCEL = 0x00800000

Indicates that the call completion identified by the completion identifier contained in the dwParam2 parameter of the LINE_LINEDEVSTATE message has been externally canceled and is no longer considered valid. If a service provider sends a LINE_LINEDEVSTATE message containing this value to TAPI, TAPI will pass it along to applications that have negotiated TAPI version 1.4 or later; applications negotiating a previous API version will not receive any notification.

LINEDEVSTATE_DEVSPECIFIC = 0x00020000

The line's device-specific information has changed.

LINEDEVSTATE_INSERVICE = 0x00000040

The line is connected to TAPI. This happens when TAPI is first activated or when the line wire is physically plugged in and in-service at the switch while TAPI is active.

LINEDEVSTATE_MAINTENANCE = 0x00000100

Maintenance is being performed on the line at the switch. TAPI cannot be used to operate on the line device.

LINEDEVSTATE_MSGWAITON = 0x00000010

The message waiting indicator is turned on.

LINEDEVSTATE_NUMCOMPLETIONS = 0x00001000

The number of outstanding call completions on the line device has changed.

LINEDEVSTATE_OTHER = 0x00000001

Device-status items other than those listed below have changed. The application should check the current device status to determine which items have changed.

LINEDEVSTATE_REINIT = 0x00040000

Items have changed in the configuration of line devices. To become aware of these changes, for example to become aware of the appearance of new line devices, the application should reinitialize its use of TAPI.

LINEDEVSTATE_RINGING = 0x00000002

The switch tells the line to alert the user.

TAPI: Service providers notify applications on each ring cycle by repeatedly sending LINE_LINEDEVSTATE messages containing this constant. For example, in the United States, service providers send a message with this constant every six seconds.

TSPI: On a POTS device, the service provider can send the message whenever the central office sends ring voltage. On digital devices such as ISDN, the service provider may need to synthesize the repetition of the message if the switch generates only one ring request. Each repetition of the message should show the ring count increasing, so that toll save functions work properly.

LINEDEVSTATE_SIGNAL = 0x00010000

The signal level has changed significantly (cellular).

LINEDEVSTATE_TRANSLATECHANGE = 0x00400000

Indicates that, due to configuration changes made by the user or other circumstances, one or more of the members in the LINETRANSLATECAPS structure have changed. The application should use lineGetTranslateCaps to read the updated structure. If a service provider sends a LINE_LINEDEVSTATE message containing this value to TAPI, TAPI will pass it along to applications that have negotiated TAPI version 1.4 or later. Applications negotiating a previous TAPI version will receive LINE_LINEDEVSTATE messages specifying LINEDEVSTATE_REINIT, requiring them to shut down and reinitialize their connection to TAPI to obtain the updated information.