This is the tone script which describes to the SPA the
tone to detect as a disconnect tone. The syntax follows a
standard Tone Script with some restrictions. Default
value is standard US reorder (fast busy) tone, for 4
seconds.
Restrictions:
1. 2 frequency components must be given. If single
frequency is desired, the same frequency is used
for both
2. The tone level value is not used. 30 (dBm)
should be used for now.
3. Only 1 segment set is allowed
4. Total duration of the segment set is interpreted
as the minimum duration of the tone to trigger
detection
5. 6 segments of on/off time (seconds) can be
specified. A 10% margin is used to validated
cadence characteristics of the tone