System Timers, Trunks - NEC DS1000 Product Description

Section 3: Features

System Timers, Trunks

108 N Section 3: Features
Customize critical trunk
timers for compatibility with
the connected telco or PBX/
Centrex.
Option
Camp-On
Line Response
Dial Tone Detect
PBX/Centrex Flash
Flash Disconnect
Force Idle (Trunk Guard
Time)
PBX Pause
Availability: All versions.
The system provides many trunk timers that the administrator can
customize. Review the table below for a description of each timer.
Table 7: Trunk Timers
Description
Not used.
When the system fails to detect loop current on a trunk, it will
wait this interval before marking the trunk as defective.
Be sure the value you enter is compatible with the local telco. If
you set this value too short, the system may mark properly func-
tioning trunks as defective. If too long, defective trunks may be
left in service.
When the system seizes a line to place a Speed Dial call, it waits
this interval for dial tone before outdialing the call. The system
requires that the first dial tone be at least 5 seconds long and the
second dial tone to be at least 2.5 seconds long.
Be sure the value you enter is compatible with the local telco. If
you set this value too short, the system may not seize properly
functioning trunks. If too long, there will be too long a delay
before the system skips over a defective trunk.
Use this timer to set the Flash interval. When a user flashes a
trunk (manually or in a Speed Dial number), the system opens
the trunk circuit for this interval. For accurate flash function, be
sure to set this interval for compatibility with the connected telco
or PBX/Centrex.
If you set this interval too short, the telco may not always regis-
ter the flash. If too long, inadvertent disconnects may occur.
Not used.
Use this timer to set the guard time for trunks. When the system
disconnects a trunk (e.g., after a user hang up), the system keeps
the line idle until this timer expires. The Trunk Guard Time helps
prevent call collisions.
If you set this interval too short, call collisions may occur. If too
long, there will be unnecessary delays before you can use the
trunk for a new call.
Not used.
DS1000/2000 Product Description