67
To disable Clear Forward Detection:
In programming mode, enter “7821”. Pause for con
fi
rmation tone.
Hang up or continue with programming.
7821
There are 4 DIP switches on the Trunk Board of the IPS 416 (or 3 DIP switches on the main board
of the IPS 308) which must be set in the “Up” or “Off” position to allow Polarity Reversal to be
detected or in the “Down” or “On” position to allow Clear Forwarding to be detected.
If the DIP switches on the Trunk Board are set differently from the system software setting,
improper operation will result.
If the System Manager inadvertently con
fi
gures the system to detect both the Polarity Reversal and
the Clear Forwarding signals, the system software will look only for the Polarity Reversal signal.
Metering Pulse Detection
Some Central Of
fi
ce switches send 12 KHz or 16 KHz metering pulses to indicate to the system
that a unit of connection time has been used. These pulses can be counted by the IPS and appear
as part of the Call History record output. If your unit is equipped with the metering pulse detection
hardware, this command will enable the detection of the metering pulses.
To enable metering:
In programming mode, enter “7816”. Pause for con
fi
rmation tone.
Hang up or continue with programming.
To disable metering:
In programming mode, enter “7817”. Pause for con
fi
rmation tone.
Hang up or continue with programming.
7816
7817
Central Offi
ce Lines – Advanced Topics
Chapter
3
- Functions Of IPS System
