LINETONEMODE_ Constants

The LINETONEMODE_ constants describe different selections that are used when generating line tones.

LINETONEMODE_CUSTOM

The tone is a custom tone defined by its component frequencies, of type LINEGENERATETONEMI37X2.

LINETONEMODE_RINGBACK

The tone is ringback tone. Exact definition is service-provider defined.

LINETONEMODE_BUSY

The tone is a busy tone. Exact definition is service-provider defined.

LINETONEMODE_BEEP

The tone is a beep, such as that used to announce the beginning of a recording. Exact definition is service-provider defined.

LINETONEMODE_BILLING

The tone is a billing information tone such as a credit card prompt tone. Exact definition is service-provider defined.

The high-order 16 bits can be assigned for device-specific extensions. The low-order 16 bits are reserved.

These constants are used to define tones to be generated inband over a call to the remote party. Note that tone detection of non-custom tones does not use these constants.