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Extended TAPI Messages (Compact 2013)

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3/26/2014

The following messages are used with Extended TAPI. Upon receiving a line message from the telephony service provider, your application should check the message parameters. Check dwParam1 to determine the type of message being received. Then check dwParam2 and dwParam3 to determine the specific details for that message type.

Message

Description

LINE_CURRENTLINECHANGE

Sent to the application every time the current line changes.

LINE_CURRENTSYSTEMCHANGE

Sent to the application every time the current system changes.

LINE_EQUIPSTATECHANGE

Sent to the application every time the equipment state changes.

LINE_GPRSCLASS

Sent to the application every time the General Packet Radio Service (GPRS) class changes. Not implemented for CDMA.

LINE_GPRSREGISTERSTATE

Sent to the application every time the registration state changes. Not implemented for CDMA.

LINE_RADIOPRESENCE

Sent to the application every time the radio is inserted or removed.

LINE_REGISTERSTATE

Sent to the application every time the registration state changes.

LINE_USSD

Sent to the application every time the application receives a notification response to an Unstructured Supplementary Service Data (USSD) command. Not implemented for CDMA.

See Also

Other Resources

Extended Telephony API