PLANET IPX-1980 - Manual (Page 45)

V23-Japan -- used in Japan;
Caller ID Start This option allows one to define the start of a Caller ID
signal:
Ring -- to start when a ring is received.
Polarity -- to start when a polarity reversal is started.
CID Buffer Length Buffer length is 2000, 2500, 3000 only in DTMF mode.
Opermode Choice Caller ID operator mode.
Item Explanation
Relax DTMF If you are having trouble with DTMF detection, you can
relax the DTMF detection.
Echo Cancel Enable/Disable the Echo Cancel function.
Echo Training Enabling echo training will cause the PBX system to
briefly mute the channel, send an impulse, and use the
impulse response to pre-train the echo canceller so it can
start out with a much closer idea of the actual echo. Value
may be "yes", "no", or a number of milliseconds to delay
before training (default = 400)
Busy Detection Used for detecting far end hang up or a busy signal.
Busy Count If Busy Detection is enabled, it is also possible to specify
how many busy tones to wait for before hanging up. The
default is 4, but better results can be achieved if set to 6
or even 8. Mind that the higher the number, the more time
that will be needed to hang up a channel, but lower the
probability that a false detection may occur.
Call Progress If turned on, call progress attempts to determine answer,
busy, and ringing on phone lines.
45