NEC America, Inc. reserves the right to change the specifications,
functions, or features, at any time, without notice.
NEC America, Inc. has prepared this document for use by its
employees and custome rs. The information contained herein is
the property of NEC America, Inc. and shall not be reproduced
without prior written approval from NEC America, Inc.
This manual explains the maintenance service featur es provided with th e NEAX2000 IVS2, and
the recommended troubleshooting procedure when a fault has occurred, for maintenance personnel of this system.
USING THIS MANUAL
This manual contains the following chapters:
CHAPTER 1MAINTENANCE SERVICE FEATURES
This chapter describes the ge ne r a l description, service conditio ns, programming, and operatin g
procedures of the maintenance service features.
CHAPTER 2TROUBLESHOOTING
This chapter describes the precautions before troubleshooting and the troubleshooting procedure flowchart.
CHAPTER 3MAINTENANCE OPERATION
This chapter explains how to save the office data and how to load and verify the office data.
Refer to the following manuals during maintenance and troubleshooting:
Command ManualDescribes the Customer Administration Termina l (CAT) op-
eration, command function, and setting data required for
programming the PBX system.
MATWorX Studio User’s GuideProvides information to install and use the MATWorX Studio
program. Includes highlight about fe atures of the program.
This guide is a supp lement to the MATWorX Studio online
Help system, which provides context-sensitive information
and procedures to perf orm tasks using the MA TW orX Studio .
Installation Procedure ManualProvides the installation procedures for the PBX system.
This feature stores fault information into the Fault Store Memory and displays the fault information on the Mai ntenance Administr ation Terminal (MAT) or the Customer Administr ati on Terminal
(CAT). The display format is shown below:
(1)Display Format on CAT/MAT by Command Operation
The fault information is separated into four parts and displayed on four screens.
1ST SCREEN
1: 01 MN MP 00
CPU KIND AND NO. THAT DETECTED THE FAULT
MP 00: MP
FP 00-03: FP NO. 0-3
AP 04-15, 20-31 : AP NO. 4-15, 20-31
CPU Kind and Number : CPU No. Detecting Fault Occurrence/
Date and Time of Fault Occurrence and Restoration:
Year, Month, Date, Time
Fault Restoration
MP, AP xx
Renewal Date of
Fault Content
Fault Information/
Fault Restoration Information
Service Conditions
(1)Printout of fault information is possible through the printer connected to the MAT.
(2)The maximum number of fault information that can be stored is 64. If the stored information
exceeds 64, the storing method (either overwriting new data or no t s toring new data) can
be selected by CM08>451.
(3)To provide external alarm indication, equipment such as an Alarm Display Panel must be
installed. External alarm indication is provided using a contact to ground at the main
distribution frame. One contact is needed for minor alarms, and one contact is needed for
major alarms.
(4)The alarm kind (Majo r Alarm, Minor Al arm, or No Alarm Indicat ion) ca n be prog r ammed b y
Specify the processing at the time of
fault stor a ge memory overflow .
Assign which kind of fault information
is stored into the fault information
memory, and which kind of fault indicates an alarm.
NOTE 1:
NOTE 2:
Even if the external alarm
may be set as MN or MJ
alarm for system initialized
(1st data=01), no alarm is
output in th e case of Power
On, Reset key operated, in itialization from the MAT/
CAT, and initialization by
MP SW3 switch selection.
The External Alarm Kind for
“Number of faulty trunks
was more than predetermined number ” is assigned
by CM42>06, 07. When
CM42>06, 07 is assigned,
the 2nd data of CMEA Y=2
simply means the fault info rmation is to be registered
into Fault Memory. In this
case, Alarm K ind ca nn ot be
changed.
(1)
450
(2)
1: To be provided
(1)
451
(2)
0: No fault information is registered
in case of fault memory overflow
1 : Fault information is overwritten in
case of fault memory overflow
•
Y=2
(1)
01 : System initialization
NOTE 1
04 : MP-FP/AP communication failure
08 : FP/AP card down
09 : Power failure
12 : CS/ZT fault occurred
16 : Periodic alarm
18 : FP/AP card returned to normal
condition
19 : Power failure returned to normal
condition
20 : DTI line failure
21 : DCH/BRT/PRT D-channel link
connection failure
22 : CCH link connection failure
24 : Number of f aulty trunks w as more
The External Alarm Kind for
“Number of lockout stations
was more than predetermined number” is fixed as
MN. The 2nd data of CMEA
Y=2 simply means the fault
information is to be registered into Fault Memory.
In this case, Alarm Kind
cannot be changed.
The External Alarm Kind for
“Number of faulty trunks
was less than predetermined number” is fixed to
No Alarm. The 2nd data of
CMEA Y=2 simply means
that the fault information is
to be registered into Fault
Memory. In this case, Alarm
kind cannot be changed.
(1) 25 : Number of lockout stations was
more than predetermined n umber
NOTE 3
26 : DLC card down
27 : Synchronism of DPC missed
28 : SMDR output buffer memory
overflow
2B : CS/ZT fault occurred
30 : DTI line returned to normal
condition
31 : DCH/BRT/PRT D-channel link
connection returned to normal
condition
32 : CCH link conn ectio n returned to
normal c ondition
34 : Number of faulty trunks was less
The External Alarm Kind for
“Number of lockout stations
was less than predetermined number” is fixed to
No Alarm. The 2nd data of
CMEA Y=2 simply means
that the fault information is
to be registered into Fault
Memory. In this case, Alarm
Kind cannot be changed.
CMEA programming can be
set using the Fault Storage
add-in of MATWorX.
(1)
35 : Number of lockout stations
restored to less than pre-
deter mined number
36 : DLC card returned to normal
condition
37 : Synchronism of DPC returned to
normal c ondition
38: : SMDR output buffer memory
returned to normal condition
3B : CS/ZT returned to normal
condition
(2)
0: Fault memory store/No External
Alarm output
1: Fault memory store/External
Alarm is MN alarm
2: Fault memory stor e/ External
Alarm is MJ alarm
3: Fault memory store/External
Alarm Kind is determined by
standard data
NOTE 5
NONE : No fault memory store/No
External Alarm output
CM42
Assign the number of stations in line
lockout to give MN (minor) alarm.
The following flowchart shows the operation procedure for displaying fault messages by
entering a command code (CMEA Y=0) from the CAT or by using the MOC Terminal feature
or the MAT function in the MATWorX Studio.
Operation:
ST
COMMAND=
EA0
00
DE
DE
DE
DE
DE
DE
DE
DE
DE
EA0>
1: 01 – – MP00
2: 99/10/25 13:30
3: F0 FF FF FF
4: FF FF FF FF
1: 20 – – AP 06
2: 99/10/25 16:00
3: F0 FF FF FF
4: FF FF FF FF
INFORMATION 1
INFORMATION 2
INFORMATION 64
1: 01 – – MP00
3
21
2: 99/10/25/13:30
4
3: F0 FF FF FF
65
78
4: F0 FF FF FF
109
11 12
For explanation of data
through , refer to the following
12
1
list.
+
+
DEDATA NOT FOUND
1
:Fault Kind Number (See Table 1-1.)
2
:External Alarm Kind (MJ/MN)(See Table 1-3.)
3
CPU Kind and Number that detected the fault
MP00: MP
FP00-03: FP Number 0-3
AP04-15, 20-31: AP Number 4-15, 20-31
4
:Date and Time of Fault Occurrence and Restoration
12
5
-: Fault Info rmation/Fault Restoration Information (See Table 1-5.)
01System initialization
04MP-FP/AP communication failure
08FP/AP card down
09Power failu r e
12CS/ZT fault occurred
16It is a day for periodic maintenance
20DTI line failure
21DCH/BRT/PRT D-channel link connection failure
22CCH link connection failure
24
[Australia Only]
25Number of lockout stations was more than predetermined
26DLC card down
27Synchronism of DP C mi sse d
28SMDR output buffer memory overflow
2BCS/ZT fault occurred
Number of faulty trunks was more than predetermined number
18FP/AP card returned to normal condition
19Power failure returned to normal condition
30DTI line returned to normal condition
31DCH/BRT/PRT D-channel link connection returned to normal
condition
32CCH link connection returned to normal condition
Fault Messages
34
[Australia Only]
35Number of lockout stations was less than predetermined number
36DLC card returned to n ormal condition
37Synchronism of DPC returned to normal condition
38SMDR output buffer memory returned to normal condition
3BCS/ZT returned to normal condition
Number of faulty trunks was less than predetermined number
External Alarm Kind—Minor (MN), Major (MJ) , or no alarm (e xternal alarm not pr ovi ded) is
programmed by CMEA Y=2. Table 1-3 shows the standard data set by the 2nd data=3 of
CMEA Y=2.
Table 1-3 Standard Data Set of External Alarm Kind
FAULT
FAULT CONTENT
ALARM
KIND
01System InitializationMN ALARM
04MP-FP/AP communication failureMN ALARM
08FP/AP card downMN ALARM
09Power failureMJ ALARM
12CS/ZT fault occurred–
16It is a day for periodic maintenance–
18FP/AP card returned to normal condition–
19Power failure returned to normal condition–
20DTI line failureMN ALARM
21DCH/BRT/PRT D-channel link connection failureMN ALARM
22CCH link connection failureMN ALARM
24
[Australia
Only]
Number of f aulty trunks w as more th an predet ermined num berM J/MN
ALARM
KIND
Page 14
25Number of lockout stations was more than predetermined
number (Refer to CM42>01 in Command Manual.)
MN ALARM
(Fixed)
26DLC card down–
27Synchronism of DPC missedMN ALARM
28SMDR output buffer memory overflowMN ALARM
2BCS/ZT fault occurred–
30DTI line returned to normal condition–
31DCH/BRT/PRT D-channel link connection returned to normal
–
condition
32CCH link connection returned to normal condition–
Table 1-3 Standard Data Set of External Alarm Kind (Continued)
FAULT
FAULT CONTENT
KIND
34
[Australia
Only]
35Number of lockout stations was less than predetermined
36DLC card returned to normal condition–
37Synchronism of DPC returned to normal–
38SMDR output buffer memory returned to normal condition–
3BCS/ZT returned to normal condition–
The alarm lamps in Table 1-4 are indicated according to the alarm kind.
Number of faulty trunks was less than p r edetermined number–
:Kind of System Initialization information (Upp er digit)
1:Program address information
2:Receive command information
F:No system initialization information
:Initial Kind (Lower digit)
b
0:Power On Initialize
1:Initialize by Reset Button (SW1)
2:Serious failure 1
3:Serious failure 2
4:Not used
5:Serious failure 3
6:Serious failure 4
7:Serious failure 5
8:Serious failure 6
9:SW3 was changed to 0
A:Serious failure 7
B:Initialize by CAT/MAT
C: Not used
D: Not used
E:Not used
F:Not used
Page 18
c
:System Initialization Information
The address of the program which caused system initialization
:Communication Failure Kind
d
00: Overflow of data sending buffer to the FP/AP
01: Invalid data received from FP/AP
e
:FP/AP Number
00-03: FP No. 0-3
04-15, 20-31: AP No. 4-15, 20-31
00: PCM los s
01: Frame loss
02: Multi frame loss
03: AIS error
04: Remote alarm
05: Multi remote alarm
06: S-bit error
07: Not used
08: CRC error
09: Slip detected
0A: Main signal all 1 (for BRT)
0B: INFO 0 (for BRT)
0C: INFO 2 (for BRT)
0D: Not used
0E: Not used
0F: Not used
m
:D-channel Circuit No.
DCH/BRT/PRT: 00-07 =D-channel No. 0-7
n
:CCH No.
00-07=CCH No. 0-7
o
:DLC Failure Kind
00:Termi nal was cut off
02: Short circu it
03: Ring wire was grounded
04: Tip wire was grounded or terminal was unconnected
05: Terminal failure
08: Terminal circuit failure