NEC Neax 2400 Ipx System Operations And Maintenance Manual

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(b) Trunk seizure by access code dialing
Special Code is assigned by ASPA command.
CI=N, SRV=SSC, SID-17
C.O. Line No. is assigned by ACOC command.
Press LOOP key or LX (L1-L6) key
(RBT)
Dial “xxxx”
C.O. Line No.
Dial called party number
Press CANCEL key
Called party at the distant
office answers and talks(DT from distant office)
Dial access code
 for designated connection 
						

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10.3 Bad Call Notification
(1) General
When a station user has trouble because of hearing noise during a call, or has other difficulty having a
normal call, the line involved is recorded as a bad call notification.
The record displays on the MAT screen as system message [6-H], which indicates the recording source
(Station Number), Called Station Number or Trunk Number, etc.
(2) Operating Procedure
SFC of the station user who can perform this operation must
be allowed ASFC, SFI=46
Access code is assigned by ASPA command, CI=H,
SRV=SSC, SID=46
Switch hook flash
(SST)
Station user returns
to talking state(SPDT)
Dial access code for
bad call notification
Talking
System message [6-H] displays 
						

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11. ROUTINE DIAGNOSIS
For confirming its own servicing status, the system automatically executes self diagnosis every day, and
displays the result of the diagnosis on a system message. By this function, possible causes for trouble can be
discovered in an early stage and possible trouble can be prevented from remaining undetected.
11.1 Related System Data
ASYD, INDEX62 b6, b7 - Routine Diagnosis ACT/STBY Changeover
b7
b6
00 = Every time
0 1 = Once a week (on Sunday)
1 0 = Once a month (on the 1st Sunday of the month)
Note:When Routine Diagnosis is simultaneously executed at all nodes (see SYS1, INDEX87, 88), all nodes
execute ACT/STBY changeover according to the data assigned in ISW.
ASYD, SYS1, INDEX86,
b0 –When routine diagnosis starts, and the result of the routine diagnosis is normal, the result
displays as system message [7-O].
0/1: Not displayed/To display
b1 –When the result of the routine diagnosis is abnormal, it displays as system message [7-P].
0/1: Not displayed/To display
b3, b2 –Processing at the time when Trunk Ineffective Hold is detected. 
Note 1
Note 1:
Trunk Ineffective Hold is a continuous state other than idle state within a predetermined duration
while routine diagnosis is in progress. Whether it is to be detected/not detected is assigned by ASYD,
SYS1, INDEX89.
Note 2:When Routine Diagnosis is simultaneously executed at all nodes (see SYS1, INDEX87, 88), all nodes
execute ACT/STBY changeover according to the data assigned in ISW.
BitExcept the trunks being held on two-way calls 
(station-to-station call, station-to-trunk, trunk-
to-trunk call), the trunks being held at present 
are forcibly releasedAll trunks being held at 
present are forcibly 
releasedLENS of the trunk detected 
display as system message
[7-P]
b3 b2
0
0
10
1
0X
—
——
—
XX
X
X 
						

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SYS1, INDEX87, 88 - Routine Diagnosis Start Time: Assign Routine Diagnosis Start Time only in
ISW. Regarding LNs, set indexes to FF so that all nodes simultaneously start/stop Routine Diagnosis.
Note
Start time should be such a time at which the traffic of the office is the lowest.
To stop the routine diagnosis, set FF respectively to INDEX87, 88.
Note:If the data other than FF is assigned in a LN, Routing Diagnosis is independently activated in the LN.
SYS1, INDEX89, 90 — Routine Diagnosis Items: The item corresponding to each bit is to execute
once a day. 
Note:When Routine Diagnosis is simultaneously executed at all nodes (see SYS1, INDEX87, 88), all nodes
execute the same Routine Diagnosis Items according to the data assigned in ISW. However, when Call
Forwarding Data Clear/Save is to be executed, the corresponding data (Index 232 b0-b3/INDEX304,
b0, b1, b3-b5) must be assigned on a LN basis
INDEX89 b0 — Main Memory Check (MM Program Memory)
0/1 = No/Yes
b1 — DM Check (DM = Data Memory)
0/1 = No/Yes
b2 — TSW ACT/STBY Changeover (for Dual Systems)
0/1= No/Yes 
Note
Note:
This data fixed to 0 in LNs.
 b3 — CPU ACT/STBY Changeover (for Dual Systems)
0/1= No/Yes 
b4 — Trunk Ineffective Hold Check
0/1= No/Yes
b5 — Trunk Ineffective Hold Detection
0/1 = No/Yes
b6 — Call Forwarding Data Clear (See Index 232)
0/1 = No/Yes
INDEX90 b1 — Backup of Call Forwarding, Individual Speed Data, Name Display Data, User
Assign Soft Key Data and Number Sharing Data to HDD (see Index 304)
0/1 = No/Yes
b3 — Residual Link Detection
0/1 = No/Yes
INDEX 87 0 2 (Hour) 2:00 a.m. is the start time.
INDEX 88 0 0 (Minute) 
						

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INDEX232 b0 — Call Forwarding - All Calls Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
b1 — Call Forwarding - Busy Line Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
b3 — Call Forwarding - Don’t Answer Data Clear
0/1 = No/Yes (This data is valid when SYS1, INDEX232, b6=1)
INDEX304 b0 — Individual Speed Calling Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
b1 — Call Forwarding Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
b3 — Name Display Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
b4 — User Assign Soft Key Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
b5 — Number Sharing Data Saving
0/1 = Out/In Service (This data is valid when SYS1, INDEX90, b1=1)
11.2 Routine Diagnosis Result
The result of routine diagnosis displays as a system message.
Normally ended: [7-O]
Abnormality detected[7-P] Refer to Chapter 3 for more details.
In case an abnormality is detected, initiate necessary processing explained in Chapter 5. 
						

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12. SYSTEM CONTROL PROCEDURES
Although the system is remarkably maintenance free, maintenance technicians occasionally may confront a
situation in which they have to manually control the system. This chapter describes system control procedures
focusing on the following four items.
Changeover/Make-busy/Make-busy Cancel of Equipment
Initialization
How to Turn ON/OFF the Whole System
System Start-up
Note:Changeover of equipment is available for common control equipment, which is provided in a dual
configuration.
12.1 Changeover/Make-Busy/Make-Busy Cancel of Equipment
12.1.1 General
This section explains system operations which are necessary for Changeover/Make-Busy/Make-Busy
Cancel of equipment dividing them into the following two blocks.
CPU Block
Switching Block (TSW/HSW/DLKC/MUX, PLO/CLK)
Prior to performing these operations, see Figure 6-37 through Figure 6-44 to obtain general
understanding on the system configuration. 
						

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This figure shows a system block diagram of ISW, which adopts a dual configuration. As seen in the
figure, ISW has the following terminals for the ACT/STBY changeover of dual system equipment:
CPU:If the ACT/STBY of CPU (ISW) is once changed over, the whole controlling block (including
CPU, ISAGT, LANI in ISW) are also changed over.
IOGT:If the ACT/STBY of IOGT (ISW) is once changed over, the whole switching block within the
system (IOGT, TSW, HSW in ISW and TSW, MUX, DLKC in all LNs) are also changed over.
However, PLO (in both ISW and each LN) is not affected.
PLO:If the ACT/STBY of PLO in ISW is once changed over, only the PLOs in ISW are solely
changed over.
Figure 6-37   System Block Diagram for ISW Switching Network
Note:Even though the ACT/STBY of PLO in ISW is once changed over, the PLO/CLK in each LN are not changed over. 
This is because the PLOs in ISW and each LN (TSWM0) have multiple connections, respectively, via the backboard 
bus. For more details, refer to the “Circuit Card Manual.”
HSW 01
HSW 00
TSW 03
TSW 02
TSW 01
PLO 1
PLO 0
IOGT 0IOGT 1
CPR 1
CPR 0
ISAGT
ISAGT: PZ-GT13 LANI : PZ-PC19 IOGT: PH-GT10 TSW : PU-SW00
HSW : PU-SW01PLO : PH-CK16/17-AEMA : PH-PC40IOC : PH-IO24
CPU 0
LANI LANI
MISC BUSLANI LANI
IOC/
MISCEMACPU 1ISAGT TSW 00To TSW of LN3
External Cables
(ISW-LN TSW CA-n) External Cables
(ISW-LN TSW CA-n)
External Cables
(ISW-LN PLO CA-n)To PLO1 (TSWM0)
of each LN
To PLO0 (TSWM0)
of each LN TSW I/O BUS
TSW I/O BUS
Note
To TSW of LN2
To TSW of LN1
To TSW of LN0 To TSW of LN3
To TSW of LN2
To TSW of LN1
To TSW of LN0HSW 11
HSW 10
TSW 13
TSW 12
TSW11
TSW 10
Fusion Link 
						

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This figure shows a system block diagram of  LN,  which adopts a dual configuration. As seen in the
figure, each LN has following terminals for the ACT/STBY changeover of dual system equipment:
CPU : If the ACT/STBY of CPU is once changed over, the whole controlling block in the
same node (including CPU, ISAGT, LANI) and GT in both TSWM0 and TSWM1
are also changed over.
GT (TSWM0) :  If the MBR key is flipped on the active GT (PH-GT09) card in TSWM0, the whole
switching block in IMG0/1 (TSW, MUX, DLKC) and IMG2/3 (TSW, MUX) are to-
tally changed over. However, PLO (in TSWM0) and CLK (in TSWM1) are not af-
fected.
PLO (TSWM0): If the MB key is flipped on the active PLO (PH-CK16-A) card (in TSWM0), the
ACT/STBY of both PLO (in TSWM0) and CLK (in TSWM1) are totally changed
over.
Figure 6-38   System Block Diagram for LN Switching Network (1/2)
Note:See “Note” on the previous page.
   ISAGT-A:  PZ-GT13          ISAGT-B: PZ-GT20             LANI:  PZ-PC19              GT:  PH-GT09             TSW:  PH-SW12          
   MUX:  PH-PC36               DLKC:  PH-PC20                PLO:  PH-CK16-A           EMA:  PH-PC40          IOC:  PH-IO24
LANILANI
GT 0
TSW 00TSW 10TSW 01TSW 11
GT 1
EMAIOC/
MISC
DLKC 0DLKC 1
PLO 0
PLO 1
CPR 0
LANILANICPR 1
MISC BUS
TSW I/O BUS
Note
TSW I/O BUS
Line/Trunk PM
IMG 0
PM BUS
PCM HW
PCM HW
PCM HW
PCM HW
MUXMUXMUXMUX
ISAGT-BISAGT-B
To TSWM1
Line/Trunk PM
IMG 1
PCM HW
PCM HW PM BUS
PCM HW PCM HW
MUXMUXMUXMUX
TSWM0
To TSWM1
From PLO
of ISWMTo CLK of
TSWM1
ISAGT-AISAGT-A
TSW 02TSW 03
TSW 12TSW 13
External Cables
(ISW-LN TSW CA-n)
External Cables
(ISW-LN PLO CA-n)External Cables
(PLO-CLK CA-n)
To/From TSW of ISWMLN0/1/2/3
Fusion Link
CPU 0CPU 1 
						

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Figure 6-38  System Block Diagram for LN Switching Network (2/2)
   ISAGT-A:  PZ-GT13          ISAGT-B: PZ-GT20             LANI:  PZ-PC19              GT:  PH-GT09             TSW:  PH-SW12
   MUX:  PH-PC36               CLK:  PH-CK18                   EMA:  PH-PC40              IOC:  PH-IO24
LANILANI
GT 0
TSW 00TSW 10TSW 01TSW 11
GT 1
EMAIOC/
MISC
CLK 0
CLK 1
CPR 0
LANILANICPR 1
MISC BUS
TSW I/O BUS
TSW I/O BUS
Line/Trunk PM
IMG 2
PCM HW
PCM HW
PCM HW
PCM HW PM BUS PCM HW
PCM HW
PCM HW
PCM HW PM BUS
MUXMUXMUXMUX
ISAGT-BISAGT-B
To TSWM0
Line/Trunk PM
IMG 3
MUXMUXMUXMUX
TSWM1
To TSWM0
From PLO
of ISWM
CPU 0
ISAGT-AISAGT-A
CPU 1
TSW 02TSW 03
TSW 12TSW 13
   External Cables
(ISW-LN TSW CA-n)
To /From TSW of ISWM
  External Cable
(PLO-CLK CA-n) 
LN0/1/2/3
Fusion Link 
						

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To perform the ACT/STBY system changeover, check the lamp indicators shown in Figure 6-39, and
then operate the related key.
Note 1:LED indications cited in Figure 6-39 are only an example. The indicating pattern (ON/Flash/OFF)
can differ, depending on each system setting.
Note 2:STATUS 7-seg. LED provides information on ACT/STBY status of the belonging CPU. For details on
the LED’s checking method, refer Figure 6-44.
Figure 6-39   How to Check the LEDs and SW Keys for System Changeover (ISW)
02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19
HSW00 (PU-SW01) TSW01 (PU-SW00) TSW02 (PU-SW00)
TSW03 (PU-SW00)
TSW00 (PU-SW00) TSW10 (PU-SW00) TSW11 (PU-SW00)
TSW12 (PU-SW00)
TSW13 (PU-SW00)
HSW01 (PU-SW01) HSW11 (PU-SW01)
HSW10 (PU-SW01)
(PH-CK16-A/17-A) (PH-CK16-A/17-A)
IOGT0 (PH-GT10) IOGT1 (PH-GT10)
BASEULPMTOPU
CPU 0 -> ACT
TSW 0 -> ACT
PLO 0 -> ACT System State
Lamp is ON
Lamp is Flashing
Lamp is OFF
Legend
:: : FRONT VIEW
ISW
ISWM
PLO0 PLO1
IOGT
FRONT
MBMBR TSW ACT
TSW
FRONT
TSW MBTSW MBR TSW ACT
HSW
FRONT
MB
HSW ACT
PLO
FRONT
MB
OPE
0304
IOC(PH-IO24) EMA (PH-PC49)
OPE
..... .....
..... .....
DSP 0 (PZ-DK224) DSP 1 (PZ-DK224)
OPE/MB12
34
567
8
OFF12
34
OFF
12
34
567
8
OFF
12
34
567
8
OFF12
34
OFF
12
34
567
8
OFF
4C026AE
4C026AEIMG1 IMG2 IMG3
STATUS
Note 2
CPUOPE WDT IMG0
12
34
567
8
OFF
12
34
OFF
12
34
567
8
OFF
MBR
4C026AE
PZ-DK224
FRONT
00
MMC(PH-M22)
OPE