NEC DS1000 Product Description page 116

Section 3: Features
106 N Section 3: Features
Option
Drop Pulse Send
DTMF Detect
Ring No Answer Hunt
Following is a summary of Analog Station Timers.
Option
Loop Current
Ringing Frequency
Minimum Break Time
Maximum Break Time
Minimum Make Time
Maximum Make Time
Table 5: Station Timers
Use this timer to set the duration of the ASTU PCB drop pulse,
which is sent to the connected analog device to initiate a disconnect.
Use this timer to set the DTMF detection threshold for single
line (analog device) ports. If the analog device sends a DTMF
signal longer than this interval, the system recognizes it as a
valid DTMF tone and decodes it. If the DTMF signal is equal to
or less than this interval, the system ignores it.
Use this timer to set the Extension Hunting Ring No Answer Time.
A call will ring a hunt group member extension for this interval
before automatically cycling to the next extension in the group.
Table 6: Analog Station Timers
Use this option to set the maximum allowed loop current for the
system's ASTU PCBs. Normally choose 25mA for short loops
and 35mA for long loops. In general, a long loop is 3000 feet or
longer and a short loop is less than 3000 feet.
Use this option to define the AC ringing frequency for the sys-
tem's ASTU PCBs. Do not change this entry from its default
value (20 Hz).
This timer defines the minimum amount of time the loop must
be opened to properly decode the dial pulse digits sent from ana-
log devices connected to ASTU PCBs. Change this value only if
the connected analog devices are set to dial at a rate other than
10 PPS.
This timer defines the maximum amount of time the loop must
be opened to properly decode the dial pulse digits sent from ana-
log devices connected to ASTU PCBs. Change this value only if
the connected analog devices are set to dial at a rate other than
10 PPS.
This timer defines the minimum amount of time the loop must
be closed to properly decode the dial pulse digits sent from ana-
log devices connected to ASTU PCBs. Change this value only if
the connected analog devices are set to dial at a rate other than
10 PPS.
This timer defines the maximum amount of time the loop must
be closed to properly decode the dial pulse digits sent from ana-
log devices connected to ASTU PCBs. Change this value only if
the connected analog devices are set to dial at a rate other than
10 PPS.
Description
Description
DS1000/2000 Product Description