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PHONEEXTENSIONID structure (tapi.h)

  • Article

The PHONEEXTENSIONID structure describes an extension identifier. Extension identifiers are used to identify service provider-specific extensions for phone device classes. The phoneNegotiateAPIVersion and TSPI_phoneGetExtensionID functions return this structure.

Syntax

typedef struct phoneextensionid_tag {
  DWORD dwExtensionID0;
  DWORD dwExtensionID1;
  DWORD dwExtensionID2;
  DWORD dwExtensionID3;
} PHONEEXTENSIONID, *LPPHONEEXTENSIONID;

Members

dwExtensionID0

First part of the extension identifier.

dwExtensionID1

Second part of the extension identifier.

dwExtensionID2

Third part of the extension identifier.

dwExtensionID3

Fourth part of the extension identifier.

Remarks

These four members together specify a universally unique extension identifier that identifies a phone device class extension. This structure may not be extended.

Extension identifiers are generated using an SDK-provided generation utility.

Requirements

Requirement Value
Header tapi.h

See also

TSPI_phoneGetExtensionID

phoneNegotiateAPIVersion