Nitsuko Ds2000 Software Manual

							System Timers, Trunks
DS2000 Software ManualChapter 1: Features303
Setting for International 
Rotary DiskSet this option for compatibility with the type of 
rotary dial (500 type) telephone used. Be sure to 
always set this option to 0.0
(US standard)
Far End DisconnectUse this timer to set the loop disconnect interval for 
trunk calls. If the system detects a loop current inter-
ruption 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 con-
nected that it should tear down. 300 mS
Minimum Single Ring 
Detection TimerThe system uses this timer to detect valid ringing sig-
nal from the connected telco or PBX. Valid single 
ring must be longer than this interval.504 mS
Minimum Double Ring 
Detection Off TimerThe system uses this timer to detect valid double ring 
from the connected PBX. Valid double ring must be 
longer than this interval.104 mS
Maximum Double Ring 
Detection Off TimerThe system uses this timer to detect  valid double ring 
from the connected PBX. Valid double ring must be 
less than this interval.304 mS
Ringing Signal End 
Detect TimerIf the ringing signal on a trunk call is interrupted for 
longer than this interval, the system assumes ringing 
has stopped and terminates the call.
Set this option for compatibility with the connected 
telco or PBX Centrix. If this interval is set to short, 
valid ringing will be inadvertently cut off. If too long, 
the system will leave the call set up even after ringing 
has stopped.6016 mS
Caller ID Detection TimerCaller ID is currently not available. Do not change 
this timer from its default setting.
The Caller ID Timer is the amount of time a system 
DSP is turned on, “listening” for Caller ID digits on a 
trunk. The listen mode starts 100 mS after the first 
ring burst and continues until the AC Impedance 
Timer times out. Only change this timer is you are 
having errors in the displayed Caller ID digits.3268 mS Table 14: Program 0402 - Trunk Timers (Page 4 of 5)
OptionDescriptionDefault 
						

							System Timers, Trunks
304Chapter 1: FeaturesDS2000 Software Manual
Rules for Detecting Normal CO (Single) Ring
1. The ring signal must be longer than the Minimum Ring Detection Timer (normally 104 mS).
2. The ring signal must also be longer than the Minimum Single Ring Detection Timer (normally 
504 mS).
3. The interval between ring bursts must not be longer than the Ringing Signal End Detection 
Timer (normally 6016 mS).
Rules for Detecting Special (Double) Ring
(This option is normally not required and is intended for only for certain Centrex/PBX applications 
Ground Start TimerBefore the system can start a ground start trunk, the 
telco’s tip ground must be present for longer than this 
interval.
Set this interval for compatibility with the connected 
telco or PBX/Centrex. If you set this interval too 
short, the system may inadvertently start a trunk it 
should not set up. If too long, the system may not start 
trunks that are functioning normally.800 mS
Pause TimerThis timer sets the system pause interval. For exam-
ple, if a user programs a pause into a Speed Dial bin, 
the system will wait this interval and then proceed 
with dialing the remaining digits in the bin.3008 mS
DP Mute TimerInformation to be provided. 8 mS
P.F. Recovery Detect 
TimerWhen the ATRU PCB recovers from a power failure, 
it checks the power failure trunk (trunk 1) for loop 
current for the P.F. Recovery Detect interval. If loop 
current is detected, it assumes the Power Failure Tele-
phone is still connected and does not tear down the 
call. If loop current is not detected, the ATRU PCB 
switches the trunk out of the power failure mode.3008 mS Table 14: Program 0402 - Trunk Timers (Page 5 of 5)
OptionDescriptionDefault
Minimum Single Ring Detection Timer (504 mS)
Minimum Ring Detection Timer (104 mS)
Ringing Signal End Detection Timer (6016 mS)Incoming Ring Signal
Ring On
Ring Off 
						

							System Timers, Trunks
DS2000 Software ManualChapter 1: Features305
with unique incoming ring.)
1. The ring signal must be longer than the Minimum Ring Detection Timer (normally 104 mS).
2. The ring signal must be shorter than the Minimum Single Ring Detection Timer (normally 504 mS).
3. The off interval between the two double rings must be greater than the Minimum Double Ring 
Detection Off Timer (normally 104 mS) but less than the Maximum Double Ring Detection 
Off Timer (normally 304 mS). 
4. The interval between the second burst of a ring cycle and the first burst of the next cycle must 
not be longer than the Ringing Signal End Detection Timer (normally 6016 mS).
Rules for Detecting Loop Current
1. When the system seizes a trunk, it will wait the Line Response Time (normally 10 seconds) for 
loop current. (If it doesn’t detect loop current, it marks the trunk as defective. If it does detect 
loop current, it will proceed to step 2 below.) Note that Line Response Time is a system timer. 
(not a trunk timer).
2. Once loop current is detected, it must be present for the Loop Current Detection Time (nor-
mally 800 mS).
3. If loop current is interrupted for longer than the Far End Disconnect Time (normally 300 mS), 
the system disconnects the call.
Minimum Single Ring Detection Timer (504 mS)
Minimum Ring Detection Timer (104 mS)
Ringing Signal End Detection Timer (6016 mS)Incoming Ring Signal
Ring On
Ring Off
Maximum Double Ring Detection Off Timer (304 mS) Minimum Double Ring Detection Off Timer (104 mS)
Line Response Time (10 seconds)Far End Disconnect
Loop Current Detection Time (800 mS)
Loop Current On
Trunk Seize
Loop Current Off
System sets up callSystem does not
tear down call
Time (300 mS) 
						

							System Timers, Trunks
306Chapter 1: FeaturesDS2000 Software Manual
Conditions
None
Default Setting
Refer to the chart above.
Programming List
Refer to the chart above.
Other Related Features
Refer to the following for related feature information:
Program 0402 - Trunk Timers (page 378)
Feature Operation
None 
						

							Tandem Trunking / Unsupervised Conference
DS2000 Software ManualChapter 1: Features307
Tandem Trunking / Unsupervised Conference
Description
Tandem Trunking allows an extension user to join two outside callers in a trunk-to-trunk confer-
ence. The extension user can then drop out of the call, leaving the trunks in an Unsupervised Con-
ference. The extension user that established the Conference is not part of the conversation. The 
Conference continues until either outside party hangs up.
Tandem Trunking uses a Conference circuit. The following table shows the system’s Conference 
capacities:
The system’s 32 Conference circuits are dynamically allocated as users request them.
Conditions
None
Default Setting
Tandem Trunking disabled.LCCPU 01.00.00 Available.
Join two callers in Conference, leave the call and let their conversation continue.
Description Capacity
Conference circuits 32
Maximum simultaneous users in Conference
(total of all Conferences system-wide)32
Maximum simultaneous conferences 8
Maximum parties in any one Conference
(trunks and/or extensions)8 
						

							Tandem Trunking / Unsupervised Conference
308Chapter 1: FeaturesDS2000 Software Manual
Programming Guide
Programming List
Program 0402 - Far End Disconnect (page 383)
Set the Far End Disconnect time for compatibility with the local telco.
Program 1003 - Tandem Trunk (page 427)
Enabled (Y) or disable (N) the trunk’s ability to be included in an Unsupervised Conference. 
Only one of the trunks in the tandem call must have this option enabled.
Other Related Features
The following features also allow different types of multiple party calls:
Barge In (Intrusion) (page 37)
An extension user can Barge In on a tandem call.
Conference (page 79)
Group Listen (page 142)
Meet-Me Conference (page 184)
Privacy Release Groups (page 228)
Forced Trunk Disconnect (page 137)
An extension user can end an Unsupervised Conference by using Forced Trunk Disconnect on 
one of the trunks in the tandem call.
Feature Operation
To set up a tandem call (Unsupervised Conference):
1. Establish trunk call.Step-by-step guide for setting up Tandem 
Trunking / Unsupervised Conference 
Step 1: Should trunk have the ability to be included in an Unsupervised Conference?
• In Program 1003 - Tandem Trunk (page 427), 
enter Y. Note that only one of the trunks in the 
tandem call must have this option enabled.
• In Program 0402 - Far End Disconnect 
(page 383), set the Far End Disconnect time for 
compatiblity with the local telco.
• In Program 1003 - Tandem Trunk (page 427), 
enter N. Note that only one of the trunks in the 
tandem call must have this option enabled.
Conversation with caller.
Line Key or Loop Key on.
If yes
If no 
						

							Tandem Trunking / Unsupervised Conference
DS2000 Software ManualChapter 1: Features309
2. Press CONF.
Your caller hears Music On Hold (if installed) while they wait for you to set up the 
Conference.
3. Place or answer trunk call
OR
Retrieve trunk call from Park Orbit.
4. Press CONF to set up the Conference.
If you cannot add additional parties to your Conference, you have exceeded the sys-
tem’s Conference limit.
5. Hang up.
If the outside parties disconnect, the trunks you selected do not have Tandem Trunking 
capability.
To disconnect a tandem call (using Forced Trunk Disconnect):
1. Press line key for busy trunk.
OR
Press 
ICM and dial the trunk’s Direct Trunk Access code (e.g., 401 for trunk 1).
Refer to Direct Trunk Access for the specifics.
2. Dial # to disconnect the line.
The tandem call disconnects.
To Barge In on a tandem call:
1. Press line key for busy trunk.
OR
Press 
ICM and dial the trunk’s Direct Trunk Access code (e.g., 401 for trunk 1).
Refer to Direct Trunk Access for the specifics.
2. Dial 4.
You can optionally place the Conference on hold. Your callers hear Music on Hold (if 
installed) while waiting on Hold. Press 
CONF to reinstate the Conference. Intercom dial tone.
ICM on and Line/Loop Key flashing.
Conversation with your conferenced callers.
Line/Loop Keys on (green).
N/A
Line/Loop Keys on (red)
Busy tone.
Line/loop key on (red).
Busy tone.
Line/loop key on (red).
You hear two beeps and you join the tandem call.
Line/loop keys on (green). 
						

							Tenant Service
310Chapter 1: FeaturesDS2000 Software Manual
Tenant Service
Description
LCCPU 01.00.00 Not available. 
						

							Tie Lines
DS2000 Software ManualChapter 1: Features311
Tie Lines
Description
LCCPU 01.00.00 Not available. 
						

							Time and Date
312Chapter 1: FeaturesDS2000 Software Manual
Time and Date
Description
The system Time and Date appears on:
Display Telephones
Station Message Detail Recording reports
The system administrator can change the time and date from the system programming mode. 
Although the data is entered in 24-hour format, it always displays in 12-hour format (e.g., 1300 = 
1:00PM).
Conditions
The system retains the time and date after a system reset or short term power failure.
Default Setting
01:00:00 (1:00AM)
01/01/1998 (Thursday, January 1, 1998)
Programming Guide
LCCPU 01.00.00 Available.
The time and date shows on telephone displays and prints on system reports.
Step-by-step guide for setting up Time and 
Date 
Step 1: Do you want to change the system time?
• In Program 0302 - Time (page 372), enter the new 
system time (HH:MM:SS in 24 hour format).
• In Program 0302 - Time (page 372), do not 
change the system time.
Step 2: Do you want to change the system date?
• In Program 0302 - Date (page 373), enter the new 
system date (MM:DD:YYYY). For example, 
enter 01012000 for January 1, 2000.
• In Program 0302 - Date (page 373), do not 
change the system date.
If yes
If no
If yes
If no