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Device-specific Buffer

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Device-specific buffers may be part of a service provider's implementation of extended operations. The service provider defines the meaning of these buffers.

Not all service providers support use of this information.

TAPI 2.x: See lineGetCallInfo (dwDevSpecificSize and dwDevSpecificOffset members of LINECALLINFO).

TAPI 3.x: See ITCallInfo::GetCallInfoBuffer (CIB_DEVSPECIFICBUFFER member of CALLINFO_BUFFER).