The UNKNOWN Bit Is Set

If the LINEMEDIAMODE_UNKNOWN bit is on in param3 of the first LINE_CALLSTATE message delivered by the service provider, the call is treated differently depending on whether an application prepared to accept calls of unknown media type has opened the line. These two possible cases (an Unknown application is running, or is not) are described in this section.

Software for developers

Delphi Components
.Net Components
Software for Android Developers

More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples

Databases for Amazon shops developers

Amazon Categories Database
Browse Nodes Database