NEC Neax 2000 Ivs2 Ccis System Manual

 NEAX2000 IVS2 CCIS System ManualPage 308  ND-70918 (E), Issue 1.0
CHAPTER 5  OPERATION TEST
LOOP-BACK TEST
Table 5-2  Alarm Indications on the 30DTI Card (Loop-Back Test)
LEDLED INDICATION FAULT
NORMAL FAULT CAUSE ACTION
RU N F la s h
(120 IPM)On or Off Abnormal 
operation of DTI 
cardConfirm the programming data: 
CM05, CM07 YY=01.
Check to see if the SENS 
switch is set as per the AP 
number (04-15, 20-31) 
assigned by CM05.
Reset the MB switch 
(Down→Up→Down)
If the fault cannot be cleared, 
replace...

CHAPTER 5  OPERATION TEST
LOOP-BACK TEST
NEAX2000 IVS2 CCIS System Manual    
ND-70918 (E), Issue 1.0   Page 309
STEP 4: With respect to channels assigned as trunks, perform call origination and call
termination tests. Prior to the performance test, make busy all trunks other than the
test trunk by means of CME5.
Dial the trunk route access code and a station number. In the case of a loop-back test,
the same BL lamp lights up on the calling-side DTI card and the called-side DTI card.
Talk with the called...

 NEAX2000 IVS2 CCIS System ManualPage 310  ND-70918 (E), Issue 1.0
CHAPTER 5  OPERATION TEST
Interoffice Transmission Line Test
INTEROFFICE TRANSMISSION LINE TEST
To confirm inter-office synchronization and speech quality using “In-Service” transmission lines,
do the following steps.
STEP 1: Connect the transmission line to the MDF or CONN card.
STEP 2: Make busy the channels except the channel tested by CME5.
STEP 3: Confirm indication lamps on the DTI card, as per the following table.
Alarm...

CHAPTER 5  OPERATION TEST
Interoffice Transmission Line Test
NEAX2000 IVS2 CCIS System Manual    
ND-70918 (E), Issue 1.0   Page 311
Table 5-3  Alarm Indications on 24DTI (Interoffice Transmission Line Test)
LEDLED INDICATION FAULT
NORMAL FAULT CAUSE ACTION
RU N F la s h
(120 IPM)On or Off Abnormal 
operation of DTI 
cardConfirm the programming data: 
CM05, CM07 YY=01.
Check to see if the SENS 
switch is set as per the AP 
number (04-15, 20-31) 
assigned by CM05.
Reset the MB switch 
(Down→Up→Down)
If...

 NEAX2000 IVS2 CCIS System ManualPage 312  ND-70918 (E), Issue 1.0
CHAPTER 5  OPERATION TEST
Interoffice Transmission Line Test
Table 5-4  Alarm Indications on 30DTI (Interoffice Transmission Line Test)
LEDLED INDICATION FAULT
NORMAL FAULT CAUSE ACTION
RU N F la s h
(120 IPM)On or Off Abnormal 
operation of DTI 
cardConfirm the programming data: 
CM05, CM07 YY=01.
Check to see if the SENS 
switch is set as per the AP 
number (04-15, 20-31) 
assigned by CM05.
Reset the MB switch 
(Down→Up→Down)
If the...

CHAPTER 5  OPERATION TEST
PLO Operation Test
NEAX2000 IVS2 CCIS System Manual    
ND-70918 (E), Issue 1.0   Page 313
PLO OPERATION TEST
To confirm the PLO operation do the following tests.
Clock Signal Generation Test
Clock  Signal  Synchronization  Test To be tested when the PBX is a clock receiver office.
Interoffice Synchronization Test
Source Office Mode Test To be tested when the PBX is a clock source office.
Clock Signal Generation Test
This test checks to see if the PLO keeps generating clock...

 NEAX2000 IVS2 CCIS System ManualPage 314  ND-70918 (E), Issue 1.0
CHAPTER 5  OPERATION TEST
PLO Operation Test
Clock Signal Synchronization Test
This test checks to see if the PLO keeps synchronizing with the external clock signals, when the
external clock signals from network has input again after it has stopped once. Do the following
steps using “In Service” transmission lines.
(1) When providing one clock supply route 
STEP 1: On the DTI0 card extracting clock signals, set the SW-1 and SW-2 to OFF to...

CHAPTER 5  OPERATION TEST
PLO Operation Test
NEAX2000 IVS2 CCIS System Manual    
ND-70918 (E), Issue 1.0   Page 315
(2) When providing two clock supply routes
STEP 1: On the DTI cards extracting clock signals, set the switches as follows to change the
clock supply route from 0 to 1.
30DTI0 card: SW-1 to OFF, SW-2 to OFF
30DTI1 card: SW-1 to OFF, SW-2 to ON
24DTI0 card: SW0-1 to OFF, SW0-2 to OFF
24DTI1 card: SW0-1 to OFF, SW0-2 to ON
STEP 2: Originate an outgoing call via trunks.
STEP 3: After an...

 NEAX2000 IVS2 CCIS System ManualPage 316  ND-70918 (E), Issue 1.0
CHAPTER 5  OPERATION TEST
PLO Operation Test
STEP 9: Repeat the procedure shown in STEP 2 and STEP 3.
NOTE:If noise periodically occurs, replace the MP card after checking the switch settings on
the MP card, and do the above test again.
Interoffice Synchronization Test
This test checks to see if noise occurs while calling with the opposite office, by difference of the
clock signal frequency between the offices. Do the following steps...

CHAPTER 5  OPERATION TEST
PLO Operation Test
NEAX2000 IVS2 CCIS System Manual    
ND-70918 (E), Issue 1.0   Page 317
STEP 3: Confirm indication lamps on the MP card.
NOTE:When the CLK lamp lights on the MP card, the clock signal is not generated from the
MP card. Check the switch settings on the DTI and MP card.
For details of the lamp indications, refer to CHAPTER 4 on Page 259.
STEP 4: Originate an outgoing call via trunks.
STEP 5: After an outgoing connection via trunk has been established, confirm...