NEC Neax 2400 Imx Business Features And Specifications

							NEAX2400 IMX Business Features and Specifications
NDA-24221, Issue 3
Page 211
Dial Monitor - DtermD-13D
D-13D Dial Monitor - Dterm
General Description
This feature provides for dialed digits to appear on the Dterm LCD display.
Operating Procedure
1. Lift the handset or press the SPEAKER key; receive dial tone. 
2. Dial the desired number; the digits will appear in sequence on the LCD display.
Service Conditions
1. Digits appear from the right and move to the left as additional digits are dialed. A maximum of 16 digits
can be displayed. If more than 16 digits are dialed, the first dialed digits will be dropped and the last dialed
digit appears. This process continues until all digits have been dialed.
2. Digits also appear on the display when implementing SPEED CALLING - ONE TOUCH - D
term [S-26D],
LAST NUMBER CALLED - Dterm [L-6D] and SAVE AND REPEAT - Dterm [S-24D]. 
						

							NEAX2400 IMX Business Features and Specifications
Page 212NDA-24221, Issue 3
D-15 Day/Night Class of Service
D-15 Day/Night Class of Service
General Description
This feature permits any station to be assigned one CLASS OF SERVICE - INDIVIDUAL [C-15], for day and
another for night. System Data can be programmed so that once the ATTENDANT CONSOLE [A-3] has entered
the NIGHT CONNECTION [N-1,2] mode, a stations CLASS OF SERVICE - INDIVIDUAL [C-15] will be
automatically changed when required. Class may be upgraded or downgraded, and trunk groups normally controlled
by the Attendant in the daytime may be opened to station control in the night mode.
Operating Procedure
This feature is controlled entirely via the ATTENDANT CONSOLE [A-3]. Pressing the NITE key or removing the
handset changes the service class. Releasing the NITE key or replacing the handset restores normal CLASS OF
SERVICE - INDIVIDUAL [C-15].
Service Conditions
1. DAY/NIGHT CLASS OF SERVICE may be assigned on a per tenant and per station basis.
2. DAY/NIGHT CLASS OF SERVICE may be assigned to different trunk restriction and service restriction
classes.
3. Refer to CLASS OF SERVICE - INDIVIDUAL [C-15] for further details.
4. Night mode restriction classes can be set at any time by entering the related command on the
MAINTENANCE ADMINISTRATION TERMINAL (MAT) [M-18].
5. When TENANT SERVICE [T-12] is provided with MULTIPLE CONSOLE OPERATION [M-4], the
system can be programmed for either all ATTENDANT CONSOLEs [A-3] or primary ATTENDANT
CONSOLE [A-3] to control activation of DAY/NIGHT CLASS OF SERVICE.
6. When DAY/NIGHT mode changeover occurs, tenant number, day/night mode of the tenant, status of the
external switch, and cause of changeover are printed out on the alarm printer and MAT printer. (This
service is determined by System Data.)
7. Day/night information of the unused tenant is not printed out.
8. A maximum of 14 tenants information can be printed per message.
9. An example of printout format is shown below:
SYSTEM MESSAGE 17-H      [-]    DAY/NIGHT CHANGE INFORMATION
           NEC ABIKO PLANT     FEB 11 23:45       
1:0101 0101 0201 0101 2:0301 0101 0401 0101 3:0A02 0201 0B02 0201
4:0C02 0201 1001 0002 5:1101 0002 1201 0002 6:C001 0000 C101 0000
7:D001 0101 FF02 0101 8:0000 0000 0000 0000 9:0000 0000 0000 0000 
						

							NEAX2400 IMX Business Features and Specifications
NDA-24221, Issue 3
Page 213
Day/Night Class of Service D-15
Service Conditions (cont’d)
10. When the Attendants NITE key or external switch is turned ON and OFF repeatedly, the messages printed
out and the operation may not coincide, but the system message will represent the final day/night mode.
11. In the following cases, day/night mode is not changed when the external switch is turned ON, and only the
system message is printed out: 
a.) When neither the ATTENDANT NIGHT TRANSFER [A-19] or TAS [T-8] is available, SYS2
INDEX 13 b1=1 (no check by Attendant at the time of day/night mode changeover), and the
NITE key of Attendant indicates Day.
b.) When neither ATTENDANT NIGHT TRANSFER [A-19] or TAS [T-8] is available, SYS2
INDEX 13 b1=0 (check by Attendant at the time of day/night mode changeover), and the NITE
key of Attendant indicates Night.
12. When day/night mode changeover is activated by jack at the time System Data is SYS1, INDEX 77 b0=1
(day/night mode changeover by jack available), the cause of changeover is indicated as NITE key (=1).
13. This feature is to be controlled by the Attendant Console accommodated in the terminating node for the
FCCS network.
14. Day/Night mode is changed by the destination node of the operator call assigned System Data for the
FCCS network. 
(Note)
15. The node which does not accommodate the Attendant Console controls DAY/NIGHT mode of the self-
node using the external key for the FCCS network.
16. The user can assign only one destination node from a node, even when the system is organized by more
than one tenant.
Note:The following Attendant Console Day/Night Mode Change methods are determined by System Data: By the Primary
Attendant Console / By all Attendant Consoles
Interactions
1. When assigning station data, assign the restriction classes desired to cause the station to upgrade,
downgrade, or remain unchanged status of restriction class when going from Day to Night. If DAY/
NIGHT CLASS OF SERVICE is not required, assign the commands normally.
2. The DAY/NIGHT CLASS OF SERVICE arrangements are based on the day/night operating status of the
tenant.
1:01 01 0 1 01
External Switch Status
1. Class Changeover
2. Night Station Changeover
3. Trunk call origination “Make Busy”
4. TAS night transfer
Day/Night mode (after changeover)
Day/Night mode (before changeover)
0. Day
1. Night 1
2. Night 2
3. Night 3
Cause of changeover
1. “NITE” key
2. External key
Tenant number 
						

							NEAX2400 IMX Business Features and Specifications
Page 214NDA-24221, Issue 3
D-15 Day/Night Class of Service
Interactions (cont’d)
3. DAY/NIGHT CLASS OF SERVICE affects the following restrictions:
a.) Route Restriction Class (ARSC)
b.) Service Feature Class (ASFC)
c.) Toll Restrictions (ATDP)
d.) Tenant Restrictions (ATNR)
4. When TRUNK ANSWER FROM ANY STATION (TAS) [T-8] is installed, a station’s Night RSC must
allow access to the IC trunks. Also, the Night SFC must allow TAS, SFI 13. 
						

							NEAX2400 IMX Business Features and Specifications
NDA-24221, Issue 3
Page 215
Direct Digital Interface D-16
D-16 Direct Digital Interface
General Description
This service feature provides the capability to connect trunks from the NEAX2400 IMX directly to “T1” carrier links
via either private or public network.
Operating Procedure
No manual operation is required.
Service Conditions
1. The DTI provides signalling interface, bipolar/unipolar conversion, frame synchronization, insertion/
extraction and alarm detection.
2. The Digital Interface Module can be provided with circuit cards to interface with “T1” carrier and/or
CCITT standard networks.
3. The Digital Interface Module (DTI) is mounted in a Port Interface Module (PIM).
4. The following two methods may be used for network synchronization:
a.) Source-Receiver System (Source)
b.) Source-Receiver System (Receiver)
5. Each office hierarchy is defined as follows: 
a.) Source Office: One center will operate as the Source Office. This location has two highly
stabilized source oscillators, and distributes the Source Clock to all the systems through the
digital interface lines.
 
 
 
    
           
       
Private Network: Connecting Digital Networks
Private Network: Connecting Digital NetworksDS-1 Signal Level
PCM Transmission Line
(24 Channel)
Office Line Line Office
Rep Rep Rep Rep
Digital PBXDigital PBX
Traditional Analog 
PBXTraditional Analog 
PBX D3 BankD3 Bank Office Line Line Office
Rep Rep Rep Rep 
						

							NEAX2400 IMX Business Features and Specifications
Page 216NDA-24221, Issue 3
D-16 Direct Digital Interface
Service Conditions (cont’d)
b.) Sub-Source Office: This office operates using a Phase Lock Oscillator (PLO) to synchronize with
the clock at the Source Office. If the Source Clock has some failure, office can operate using its
own backup oscillator.
c.) Receiver Office: This office is arranged so it will have at least two clock routes, one for Receiver
and the other for standby. Synchronization Clock is derived from incoming PCM bit stream from
higher hierarchy offices. 
d.) Local Receiver Office: This is the end office in a digital network arrangement. This office will
not be provided with a backup route for the PLO, because this office is the only one influenced in
an event of trouble occurrence.
6. Each NEAX2400 IMX can be equipped with a duplicate Phase Lock Oscillator used for network
synchronization. Each PLO has 4 inputs to which clocks from the Source Oscillator or Digital Interface
Module should be connected.
Network Clocking Hierarchy
S: Source Office
SS: Sub-Source Office
R: Receiver Office
LR: Local Receiver Office
Direction of Clock S
SSSS
RR
LRLRLR 
						

							NEAX2400 IMX Business Features and Specifications
NDA-24221, Issue 3
Page 217
Direct Digital Interface D-16
Service Conditions (cont’d)
Network Clock Synchronization
 
 
 
 
NEAX2400 IMX 
(Source Office)LEGEND
DTI: Digital Trunk Interface Card
PLO: Phase Lock Oscillator
     : Speech Path
- - -: Clock Route DTI
DTI
DTI
DTI
DTI
DTI
DTI
DTI
DTI
DTI
DTI
DTIDTI
DTI
DTI
DTI
PLO PLOPLO A
NEAX2400 IMX 
(Receiver Office)NEAX2400 IMX 
(Receiver Office)
A 
						

							NEAX2400 IMX Business Features and Specifications
Page 218NDA-24221, Issue 3
D-31 Delay Announcement - UCD
D-31 Delay Announcement - UCD
General Description
This feature provides recorded announcement service for an incoming call directed to a busy UNIFORM CALL
DISTRIBUTION (UCD) [U-1] group and placed in a waiting queue. The recorded announcement occurs after a
predetermined time in the queue.
Operating Procedure
No manual operation is required.
Service Conditions
1. Up to eight announcement machines can be assigned per UCD [U-1] group.
2. The DELAY ANNOUNCEMENT-UCD time consists of three time periods. Each idle time period
requires a duration of 6 seconds:
a.) before the announcement (idle time) 
b.) the announcement
c.) after the announcement (idle time).
3. After the announcement is played, MUSIC ON HOLD [M-7] is activated.
4. Ringback tone is sent to the queued UCD [U-1] call before the first DELAY ANNOUNCEMENT begins.
5. If programmed, the DELAY ANNOUNCEMENT can be repeated while the incoming call is waiting in
the queue. Between each announcement, MUSIC ON HOLD [M-7] will be heard.
6. When a UCD [U-1] station becomes idle, the incoming call is connected immediately to the idle station,
even if the incoming call is connected to the DELAY ANNOUNCEMENT-UCD.
7. If the incoming call comes from a ring down trunk, billing begins with the start of the Delayed
Announcement.
8. If an incoming call encounters all stations busy in a UCD [U-1] group and overflows to another UCD [U-
1] group, and if all stations are busy in the OVERFLOW - UCD [O-13] group, the calling party will be
placed in the queue for the originally called UCD [U-1] group, and DELAY ANNOUNCEMENT - UCD
will be invoked, if programmed.
9. The figures below show Delayed Announcement Time Charts for a single programmed announcement,
and for a repeated programmed announcement.
Time Chart for Single and Repeated Announcement
Call put inEnd of 
Ringback Tone 
Idle Time (Record Music On Hold etc.)
 Actual
MessageMusic
On
HoldPositions
are available
MessageStart of 
MessageCall AnsweredQueue
Ringback Tone Call put inEnd of 
Ringback Tone 
Idle Time 
Actual
MessageMusic
On
HoldPositions are available
MessageStart of 
MessageCall AnsweredQueue
Ringback Tone 
(Record Music On Hold etc.)Delay before replay of 
Announcement
Message
Replays 
						

							NEAX2400 IMX Business Features and Specifications
NDA-24221, Issue 3
Page 219
Delay Announcement - UCD D-31
Service Conditions (cont’d)
Announcement Recording 
The figure below illustrates the three possible Delayed Announcement recording patterns.
Delayed Announcement Recording Patterns
10. Delay Announcement Trunk (DAT) in the node accommodating the UCD controlling station must be used
for this feature for the FCCS network.
Interactions
1. UNIFORM CALL DISTRIBUTION [U-3] must first be provided.
2. When a UCD station is assigned as the destination of LDN Night Connection, this service cannot be
activated.
 
                            
0 sec. 8 18 24 32 sec.
PATTERN I 6
ANNOUNCEMENT12
6 6
24 IDLE TIME
PATTERN II
PATTERN III18
ANNOUNCEMENT IDLE TIMEANNOUNCEMENT IDLE TIME 
						

							NEAX2400 IMX Business Features and Specifications
Page 220NDA-24221, Issue 3
D-32D Dual Hold - Dterm
D-32D Dual Hold - Dterm
General Description
This feature allows two Dterms to simultaneously be placed on hold. This allows the held parties to answer or
originate a call from a subline appearance or the idle prime line.
Operating Procedure
To place a call in a DUAL HOLD-Dterm condition:
1. When two Dterms are connected, either Dterm user can press the pre-assigned HOLD key and place the
other Dterm on hold.
2. If the held D
term user wishes to originate or answer another call from a sub-line appearance, the held Dterm
user presses the pre-assigned HOLD key and places the connection in a DUAL HOLD-Dterm condition.
To place back to the original connection:
1. The Dterm user goes off-hook and presses the held line.
2. The held D
term hears MUSIC ON HOLD [M-7] if originally connected Dterm is still holding the call.
3. The held D
term comes back to the original call if originally connected Dterm has already returned to the
original call.
Service Conditions
1. The DUAL HOLD - Dterm feature can be activated by pressing the HOLD key during a call between any
two Dterms.
2. While a call is being held, Automatic Recall is initiated after a preprogrammed time on the D
term that
placed the call on Hold.
3. For STATION MESSAGE DETAIL RECORDING SYSTEM [S-10] information between extensions, a
call is regarded as completed when the HOLD key is pressed to hold the call. When both stations answer
the held call, it is processed as a new call.
4. Even in the case of a call between two D
terms, DUAL HOLD - Dterm cannot be initiated between Boss and
Secretary after the Boss/Secretary service, or between overriding and overridden parties after the
PRIVACY RELEASE [P-18] service.
5. This feature is not restricted by the Class of Service for the stations in the network.
6. The following services are available to either the holding line or the line placed on hold when a call is held
by pressing the HOLD key in a DUAL HOLD - D
term situation:
CALL BACK [C-1]
MESSAGE REMINDER [M-19D]
7. The following services are not available to the holding line or the held line in a DUAL HOLD - D
term
situation: 
ATTENDANT CAMP-ON WITH TONE INDICATION [A-1]
BUSY VERIFICATION [B-3] 
CALL WAITING - ORIGINATING [C-31] 
CALL WAITING - TERMINATING [C-12] 
EXECUTIVE RIGHT-OF-WAY [E-1D] 
PRIVACY RELEASE [P-18]
8. DUAL HOLD-D
term cannot be activated for calls established by:
BOSS-SECRETARY Service [B-5D, 8, 11]
PRIVACY RELEASE [P-18]