NEC Neax 2000 Ivs2 Maintenance Manual

							CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 73
16 Periodic 
maintenanceInspection kind 00: Battery check Exchange the battery.
20 DTI line failure 3:  XX
 XX XX XX
Fault Details Kind
(See below.)
Fault Detail Kind 00: PCM Loss Check the DTI cable 
connection.
Fault Detail Kind 01: Frame Loss
Fault Detail Kind 02: Multi frame 
Loss
Fault Detail Kind 03: AIS error
Fault Detail Kind 04: Remote 
alarmReplace the DTI card.
Fault Detail Kind 05: Multi remote 
alarm
Fault Detail Kind 06: S-bit error Check the DTI cable 
connection.
Fault Detail Kind 08: CRC error
Fault Detail Kind 09: Slip detected
Fault Detail Kind 0A: Main signal 
all 1 (for BRT)
Fault Detail Kind 0B: INFO 0 (for 
BRT)
Fault Detail Kind 0C: INFO 2 (for 
BRT)
21 DCH/BRT/PRT link 
connection failure3: XX
 XX XX XX
D-channel circuit No.
In case of DCH/BRT/PRT
00: Channel No. 0Check the status of the 
local-office side line or 
the public network side 
line.
22 CCH link 
connection failure3: XX
 XX XX XX
CCH No.
[00-07: CCH No. 0-7]Check the status of the 
local-office side line or 
the remote-office side 
line.
Table 2-3  Remedial Action on Each Fault Kind (Continued)
FAU LT  
KIND
NUMBERFAU LT  
CONTENTFAULT INFORMATION REMEDIAL ACTION 
						

							 NEAX2000 IVS2 Maintenance ManualPage 74  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
24
[Australia 
Only]Number of faulty 
trunks was more 
than predeter-
mined numberSearch for a line 
fault trunk by 
CMB0 Y=1 
or CMF5 Y=0.
Check to see if the
trunk line is faulty.
25 Number of line 
lockout stations 
was more than 
predetermined 
numberSearch for stations 
in line lockout by 
the configuration 
repor t on the MAT.
Place the handset 
of any station in line 
lockout back onto 
the hookswitch.
If the station 
remains in the line 
lockout state, check 
the line state (the 
line between the 
station and the 
PBX may be 
shorted).
Table 2-3  Remedial Action on Each Fault Kind (Continued)
FAU LT  
KIND
NUMBERFAU LT  
CONTENTFAULT INFORMATION REMEDIAL ACTION
1
2
1
2
3 
						

							CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 75
26 DLC card down 3:  XX XX XX XX
4: XX XX XX XX
DLC Failure Kind (See below.)
LEN (000-763)
Station No. (X - XXXXXXXX)
DLC Failure Kind 00: Terminal was 
cut offCheck the cable 
connection 
between the 
terminal and the 
PBX.
Check to see if the 
cable is cut off.
Check to see if the 
Tip wire of the 
cable is grounded.
DLC Failure Kind 02: Short circuit 
was made on 
the lineCheck to see if a short 
circuit exists on the 
line.
DLC Failure Kind 03: Ring wire 
was 
groundedCheck to see if the 
Ring wire of the cable 
is grounded.
DLC Failure Kind 04: Tip wire was 
grounded or 
terminal was 
unconnectedCheck the cable 
connection 
between the 
terminal and the 
PBX.
Check to see if the 
cable is cut off.
Check to see if the 
Tip wire of the 
cable is grounded.
Table 2-3  Remedial Action on Each Fault Kind (Continued)
FAU LT  
KIND
NUMBERFAU LT  
CONTENTFAULT INFORMATION REMEDIAL ACTION
123
3
1
2
3
1
2
3
1
2
3 
						

							 NEAX2000 IVS2 Maintenance ManualPage 76  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
26 DLC card down DLC Failure Kind 05: Terminal 
failureReplace the terminal 
with a known good 
one and check to see 
if the same failure 
occurs.
DLC Failure Kind 08: Terminal 
circuit failureReplace the terminal 
with a known good 
one and check to see 
if the same failure 
occurs.
27 Synchronism of 
DPC missed3: XX
 XX XX XX
DPC Failure Kind
DPC Number
DPC Failure Kind 00: DPC on the 
side of 
partnerCheck the switch 
setting of DPC on 
the side of par tner.
If the fault cannot 
be cleared, replace 
the card.
DPC Failure Kind 01: DPC on the 
side of 
oneselfCheck the switch 
setting of DPC.
If the fault cannot 
be cleared, replace 
the card.
28 SMDR output 
buffer memory 
overflow3: XX
 XX XX XX
Memory Kind
Overflow Kind 
(See Page 21.)
Memory kind 00: Billing memory 
block
Memory kind 01: Host CPU No. 1 
output Buffer 
memory block
Table 2-3  Remedial Action on Each Fault Kind (Continued)
FAU LT  
KIND
NUMBERFAU LT  
CONTENTFAULT INFORMATION REMEDIAL ACTION
12
1
2
1
2
1
2
12
1
2 
						

							CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 77
28 SMDR output 
buffer memory 
overflowMemory kind 02: Automatic print 
Buffer memory 
block
Memory kind 03: Automatic print 
Buffer memory 
blockConfirm if the printer 
power is on or printer 
is out of paper.
Memory kind 04: Notice of the rest 
of memory block 
numbers in the 
system
Memory kind 05: CCIS output 
Buffer memory 
block
Memory kind 06: CS repor t traffic 
data memory 
block
2B CS/ZT Fault 
occurred3: XX
 XX XXXX
Fault Kind (See below)
AP No. of CS/ZT fault 
occurrence 4-15, 20-31
CS/ZT Interface No. of CS/ZT   
fault occurrence 000-255
Fault Kind 00: CS/ZT connection 
downCheck the connection 
of CS/ZT and PBX 
from CS/ZT Interface 
No.
Fault Kind 01: CS/ZT carrier has 
no spaceNo specific action is 
required.
Table 2-3  Remedial Action on Each Fault Kind (Continued)
FAU LT  
KIND
NUMBERFAU LT  
CONTENTFAULT INFORMATION REMEDIAL ACTION
123
1
2
3 
						

							 NEAX2000 IVS2 Maintenance ManualPage 78  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
Table 2-4  Fault Restoration Information 
FAU LT  
RESTORATION 
KIND NUMBERFAULT RESTORATION 
CONTENTFAULT RESTORATION
INFORMATION
18 AP card returned to normal 
condition3: XX XX XX XX
FP/AP Number
00-03 : FP No. 0-3
04-15, 20-31: AP No. 4-15, 
20-31
19 Power failure returned to 
normal condition3: XX
 XX XX XX
Power Failure 
Restoration Kind
00: AC input failure
01: Fuse break
02: PWR alarm
30 DTI line returned to normal 
condition3: XX
 XX XX XX
Fault Detail Kind
00: PCM Loss
01: Frame Loss
02: Multi frame Loss
03: AIS error
04: Remote Alarm
05: Multi remote alarm
06: S-bit Error
08: CRC Error
09: Slip Detected
0A: Main signal all 1 (for BRT)
0B: INFO 0 (for BRT)
0C: INFO 2 (for BRT)
31 DCH/BRT/PRT link connection 
returned to the normal 
condition3: XX
 XX XX XX
D-channel circuit No.
In case of DCH/BRT/PRT
00: Channel No. 0
32 CCH link connection returned 
to normal condition3: XX
 XX XX XX
CCH No.
[00-07: CCH No. 0-7]
34
[Australia Only]Number of faulty trunks was 
less than predetermined 
number 
						

							CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 79
35 Number of lockout stations was 
less than predetermined 
number
36 DLC returned to normal 
condition3: XX
 XX XX XX
4: XX XX XX XX
DLC Failure Kind
00:  Terminal was cut off
02: Short circuit was made on the
line
03: Ring wire was grounded
04:  Tip wire was grounded or ter-
minal was unconnected
05: Terminal failure
08:  Terminal circuit failure
LEN (000-763)
Station No. (X-XXXXXXXX)
37 Synchronism of DPC returned 
to normal condition3: XX
 XX XX XX
DPC Number
DPC Failure Kind
38 SMDR output buffer memory  
returned to normal condition3: XX
 XX XX XX
Memory kind
3B CS/ZT returned to normal 
condition3. XX
 XX XXXX
Fault Restoration Kind 
00: CS/ZT connection returned 
01: CS/ZT carrier has space 
AP No. returned to normal 
condition
04-15, 20-31   
CS/ZT Interface No. CS/ZT 
returned to normal condition
000-255 
Table 2-4  Fault Restoration Information (Continued)
FAU LT  
RESTORATION 
KIND NUMBERFAULT RESTORATION 
CONTENTFAULT RESTORATION
INFORMATION
123
3
1
2
3
123
1
2
3 
						

							 NEAX2000 IVS2 Maintenance ManualPage 80  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
STATION LINE STATUS DISPLAY
Item (1) shows the display format for the Station Line Status Display feature, and item (2) shows
the fault diagnosis and troubleshooting method.
For details of the Station Line Status Display feature, see Station Line Status Display on Page
32.
(1) Display Format
(2) Fault Diagnosis and Troubleshooting
Table 2-5 shows the line status and the remedial action on each indicated data. Diagnose
the contents of the fault and perform the remedial action by referring to Ta b l e  2 - 5.
X X X X    :      X X       X X      XX
Software Test Result (See Table 2-5.)
Hardware Test Result (See Table 2-5.)
Analog Line/Digital Line
  00 :  LC (Single Line Telephone)
  10 :  DLC (D
term)
Station Number 
						

							CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
NEAX2000 IVS2 Maintenance Manual    
ND-70926 (E), Issue 1.0   Page 81
Table 2-5  Line Status and Remedial Action 
INDICATED
DATASINGLE LINE TELEPHONE
D
term
LINE 
STATUSREMEDIAL 
ACTIONLINE 
STATUSREMEDIAL 
ACTION
Hardware Test
00 Terminal is 
not con-
nectedCheck the cable 
connection 
between the 
terminal and the 
PBX.
Check to see if the 
cable is cut off.Terminal is 
not con-
nected or 
Tip wire is 
groundedCheck the cable 
connection 
between the 
terminal and the 
PBX.
Check to see if the 
cable is cut off.
Check to see if the 
Tip wire of the 
cable is grounded.
01 Terminal is 
connectedNo action is required. Terminal is 
connectedNo action is required.
02 Loop (Short 
circuit is 
made on 
the line)Check to see if a 
short circuit exists on 
the line.Shor t circuit 
is made on 
the lineCheck to see if  a 
short circuit exists on 
the line.
03 Ring wire is 
groundedCheck to see if the 
Ring wire of the cable 
is grounded.Ring wire is 
groundedCheck to see if the 
Ring wire of the cable 
is grounded.
04 LC card is 
not 
mountedCheck to see if the 
LC card is properly 
mounted.LC card is 
not 
mountedCheck to see if the 
LC card is properly 
mounted.
05 Test busy No action is required. Terminal 
failureReplace the terminal 
with a known good 
one and check to see 
if the same failure 
occurs.
06
DLC card 
downReplace the card with 
a known good one 
and check to see if 
the same failure 
occurs.
08
Line failure 
detectReplace the terminal 
with a known good 
one and check to see 
if the same failure 
occurs.
1
2
1
2
3 
						

							 NEAX2000 IVS2 Maintenance ManualPage 82  ND-70926 (E), Issue 1.0
CHAPTER 2  TROUBLESHOOTING
Fault Diagnosis and Troubleshooting
Software Test
01 Idle No action is required. Idle No action is required.
02 Line 
LockoutPlace the handset of 
the station in line 
lockout back onto the 
hookswitch.Line 
LockoutPlace the handset of 
the  station in line 
lockout back onto the 
hookswitch.
Other than 01, 02 Busy No action is required. Busy No action is required.
Table 2-5  Line Status and Remedial Action (Continued)
INDICATED
DATASINGLE LINE TELEPHONE
D
term
LINE 
STATUSREMEDIAL 
ACTIONLINE 
STATUSREMEDIAL 
ACTION