Inside Macintosh: Telephony /

Chapter 2 - Telephone Terminals / Telephone Terminals Reference

Constants

Telephone Terminal Feature Flags

These constants define the bit masks for the featureFlags field in the telephone terminal record.

enum {
   pcmAvail                = 1L << 0,
   hasHandset              = 1L << 1,
   hasSpeakerphone         = 1L << 2,
   canOnHookDial           = 1L << 3,
   hasRinger               = 1L << 4,
   canSetDisplay           = 1L << 5,
   hasKeypad               = 1L << 6,
   hasVideo                = 1L << 7,
   hasOther                = 1L << 8,
   crossDNConference       = 1L << 9,
   hasSubaddress           = 1L << 10,
   hasUserUserInfo         = 1L << 11,
   hasHandsetSoundStreams  = 1L << 12,
   hasIndHandset           = 1L << 13,
   hasBuiltinSpeakerphone  = 1L << 14
};

Constant descriptions

pcmAvail

If this bit is set, the telephone terminal can access pulse code modulated (PCM) data.

hasHandset

If this bit is set, the telephone terminal has an attached handset.

hasSpeakerphone

If this bit is set, the telephone terminal has speakerphone capabilities.

canOnHookDial

If this bit is set, the telephone terminal can dial while the handset is in place.

hasRinger

If this bit is set, the telephone terminal has its own ringer.

canSetDisplay

If this bit is set, the telephone terminal can write to the display.

hasKeypad

If this bit is set, the telephone terminal has a 12 button keypad.

hasVideo

If this bit is set, the telephone terminal has videophone capabilities.

hasOther

Reserved for use by Apple.

crossDNConference

If this bit is set, the terminal can group calls from different directory numbers into a single conference.

hasSubaddress

If this bit is set, the network through which the terminal is connected supports subaddressing.

hasUserUserInfo

If this bit is set, the network through which the terminal is connected supports the passing of data between users.

hasHandsetSoundStreams

If this bit is set, sound streams are supported for this handset (the handset supports a sound input driver and a sound output component). Note that the pcmAvail bit is set in the telephone terminal record's featureFlags field whenever hasHandsetSoundStreams is set.

hasIndHandset

If this bit is set, the handset can be accessed independently of the phone line (and hence you can call TELSetIndHSConnect to connect the handset to or disconnect the handset from the phone line).

hasBuiltinSpeakerphone

If this bit is set, the Macintosh speaker and microphone are available for use as a speakerphone. This capability also applies to a headset plugged into the sound system of the computer.