[MSDN Library April 2000] LINE_CALLSTATE (100%)

MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Telephony Application Programming Interfaces (TAPI, TSPI, MSPI) > TAPI Service Providers > Telephony Service Providers (TSP) > TSPI Reference > TSPI Messages > TSPI Line Device Messages

[MSDN Library April 2000] LINE_CALLSTATE (86.1324786324786%)

MSDN Library - April 2000 > Platform SDK > Networking and Directory Services > Telephony Application Programming Interfaces (TAPI, TSPI, MSPI) > TAPI Version 2.2 (For C Applications) > TAPI 2.2 Reference > TAPI Messages > Line Device Messages

[MSDN Library April 2000] LINE_CALLSTATE (56.2142857142857%)

MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > Communications > Messages