LINEBUSYMODE_ Constants

The LINEBUSYMODE_ bit-flag constants describe different busy signals that the switch or network can generate. The different busy signals typically indicate that a different resource required to make a call is currently in use.

LINEBUSYMODE_STATION: The busy signal indicates that the called party's station is busy. This is usually signaled with a "normal" busy tone.
LINEBUSYMODE_TRUNK: The busy signal indicates that a trunk or circuit is busy. This is usually signaled with a "fast" busy tone.
LINEBUSYMODE_UNKNOWN: The busy signal's specific mode is currently unknown, but can become known later.
LINEBUSYMODE_UNAVAIL: The busy signal's specific mode is unavailable and cannot become known.

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

Note that busy signals may be sent as inband tones or out-of-band messages. TAPI makes no assumption about the specific signaling mechanism.

LINEBUSYMODE_ Constants

See Also