Modem Manager Constants

The following constants are associated with the media handling properties and requirements of modems, call requests, and incoming discriminators.

AUDIO 0x08 for use with speech synthesis

DATAMODEM 0x10 for data transfer

Three additional constants are defined, although the Modem Manager has no specific support for them.

UNKNOWN 0x02

VOICE 0x04

G3FAX 0x20

Additional control properties associated with call handling are:

NEED_DTMF 0x1000 enable receipt of DTMF tones when handling an audio call

DTMF_STOPS_SPEECH 0x2000 received DTMF tones interrupt speech