NEC DS1000 Product Description

Section 3: Features
106 ◆ Section 3: Features DS1000/2000 Product Description
Following is a summary of Analog Station Timers.
Drop Pulse Send
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.
DTMF Detect
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.
Ring No Answer Hunt
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
Option Description
Loop Current
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.
Ringing Frequency
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).
Minimum Break Time
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.
Maximum Break Time
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.
Minimum Make Time
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.
Maximum Make Time
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.
Table 5: Station Timers
Option Description

NEC DS1000 Specifications

General

Brand	NEC
Model	DS1000
Category	Telephone
Language	English