NEC DS1000 Product Description page 120

Section 3: Features
110 N Section 3: Features
Option
Speed Dial DTMF Tone
On
Speed Dial DTMF Tone
Off
Loop Current Detection
Time
Far End Disconnect
Minimum Single Ring
Detection Timer
Minimum Double Ring
Detection Off Timer
Maximum Double Ring
Detection Off Timer
Ringing Signal End
Detect Timer
Table 7: Trunk Timers
Description
This timer sets the duration of DTMF digits for Speed Dial trunk
calls automatically dialed by the system.
Set this timer for compatibility with the connected telco or PBX/
Centrex. If you set this interval too short, the telco or PBX/Cen-
trex may not be able to properly detect the DTMF digit. If too
long, outbound dialing is unnecessarily slowed down.
This timer sets the duration the quiet time between DTMF digits
for Speed Dial trunk calls automatically dialed by the system.
Set this timer for compatibility with the connected telco or PBX/
Centrex. If you set this interval too short, the telco or PBX/Cen-
trex may not be able to set up to receive the next DTMF digit. If
too long, outbound dialing is unnecessarily slowed down.
For loop start trunks, loop current must be present for this inter-
val before the system seizes the trunk.
Set this interval for compatibility with the connected telco or
PBX/Centrex. If you set this interval too short, the system may
inadvertently seize unstable trunks. If too long, the system may
not properly seize a valid trunk.
Use this timer to set the loop disconnect interval for trunk calls.
If the system detects a loop current interruption longer than this
interval it assumes the telco has disconnected the trunk. It then
returns the trunk trunk to idle.
Set this interval for compatibility with the connected telco or
PBX/Centrex. If you set this interval too short, the system may
inadvertently disconnect valid trunks. If too long, the system
may leave trunks connected that it should tear down.
The system uses this timer to detect valid ringing signal from the
connected telco or PBX. Valid single ring must be longer than
this interval.
The system uses this timer to detect valid double ring from the con-
nected PBX. Valid double ring must be longer than this interval.
The system uses this timer to detect valid double ring from the
connected PBX. Valid double ring must be less than this interval.
If the ringing signal on a trunk call is interrupted for longer than
this interval, the system assumes ringing has stopped and termi-
nates the call.
Set this option for compatibility with the connected telco or PBX
Centrex. If this interval is set to short, valid ringing will be inad-
vertently cut off. If too long, the system will leave the call set up
even after ringing has stopped.
DS1000/2000 Product Description