NEC Neax 2400 Imx Installation Manual

							NDA-24234 CHAPTER 5
Page 351
Revision 3.0
INSTALLATION TEST PROCEDURE
NAP-200-047
Sheet 1/2
Test of Connection and Alternate Routing 
to All Tie Lines
START
Test the trunks in the primary 
route one at a time.Make busy all trunks in the primary route except the trunk to 
be tested.
Station “A” calls Station “B” via the primary route.
After Station “B” answers, check the normality of the speech 
condition including the speech level, presence of noise, and 
one-way speech.
Release.
Make all the trunks in the primary route busy.
Test the trunks in the alternate 
route one at a time.Make busy all trunks in the alternate route except the trunk 
to be tested.
Station “A” calls Station “B” via the alternate route.
After Station “B” answers, check the normality of the speech 
condition including the speech level, presence of noise, and 
one-way speech.
Release.
Cancel the Make Busy condition of the trunks.
END 
						

							CHAPTER 5 NDA-24234
Pag e 35 2
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INSTALLATION TEST PROCEDURE
Figure 047-1  Combination of Tie Line Network and Public Network
Figure 047-2  Tie Line Network
NAP-200-047
Sheet 2/2
Test of Connection and Alternate Routing 
to All Tie Lines
Basic Route
Station AStation B PBX to 
be tested
Tie Line 
Network
Public 
NetworkPBX
TRKs
TRKs
Alternate 
Route
PBX
PBX
PBX Station AStation B
TRKs
TRKs
ALTERNATE
ROUTE BASIC ROUTEPBX to be
tested 
						

							NDA-24234 CHAPTER 5
Page 353
Revision 3.0
INSTALLATION TEST PROCEDURE
Figure 048-1  Test of Tandem Connection to Tie Line
NAP-200-048
Sheet 1/2
Test of Tandem Connection to Tie Line
START
Test of direct dial-in tandem 
connectionTest of Primary Route
Station “A” calls Station “B”.
Confirm speech between Stations “A” and “B”.
Release.
Test of Alternate Route
Make busy all the trunks in the primary route.
Station “A” calls Station “B”.
Confirm speech between Stations “A” and “B”.
Release.
Un-busy (make idle) all the trunks.
Primary Route
Station A
Station B
PBX to 
be testedPBXTRKs
Alternate 
RoutePBX
PBXPBXTRKs
IRT
TRKs
AT T C O N
(1)
(3)
(2)
Station C
(1): 
(2): 
(3):Direct tandem connection by dial-in 
Tandem connection via ATTCON 
Tandem connection via Station
A 
						

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INSTALLATION TEST PROCEDURE
NAP-200-048
Sheet 2/2
Test of Tandem Connection to Tie Line
Test of tandem connection via 
ATTCONStation “A” dials the access code for the ATTCON.
The ATTCON answers and sets up a tandem connection to 
Station “B”.
The ATTCON releases, and speech between Stations “A” 
and “B” is confirmed.
Release.
Test of tandem connection via 
stationStation “A” calls Station “C”.
Station “C”, after answering, makes a Switch Hook Flash 
(SHF) and calls Station “B”.
After Station “B” answers, Station “C” release. Speech 
between Stations “A” and “B” is confirmed.
Release.
END
A 
						

							NDA-24234 CHAPTER 5
Page 355
Revision 3.0
INSTALLATION TEST PROCEDURE
For the PBX, PADs can be set according to the connecting status of the Tie Line involved.
(a) For an outgoing/incoming call via a Tie Line:
Via MAT command “ARTD” and switch settings on the TLT circuit card.
(b) For a tandem Tie Line connection:
Via command “APAD” or switch settings on the TLT circuit card(s).
At both the originating and terminating offices, an 8 dB PAD is set for the EMT route via the “ARTD” command or
switch settings. At the tandem office, a 4 dB PAD is set for the terminating and originating sides of each EMT route
via command “APAD”.
Through this arrangement, an 8 dB PAD is in service for outgoing and incoming connections, and 4 dB PADs are in
service for each line in a tandem connection (total:  8 dB). This arrangement is shown in Figure 049-1
Figure 049-1  Example of PAD Setting
NAP-200-049
Sheet 1/2
PAD Setting
Originating Office
0 dB
8 dB8 dB
8 dB EMT
Carrier 
Terminal
–8
0Carrier 
Terminal
0
–8EMT
PA D
Terminating Office
0 dB
8 dB8 dB
8 dB
EMT
Carrier 
Terminal –8
0Carrier 
Terminal
0
–8
EMT
PA D
4 dB
4 dB
4 dB
4 dB Tandem Office 
						

							CHAPTER 5 NDA-24234
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INSTALLATION TEST PROCEDURE
When setting up a No. 7 CCIS Network, PAD setting differs from that in the analog network.
(c) For an outgoing call to/incoming call from a Tie Line:
Vi a  “ARTD” command.
(d) For a tandem Tie Line connection:
Vi a  “APAD” command.
At both the originating and terminating offices, 0 dB is set to the outgoing side and 8 dB is set to the terminating of
the DTI/CCT route via “ARTD” command.
At the tandem office, 0 dB is set for both the terminating and originating sides of each DTI/CCT route via “APAD”
command. 
This arrangement is shown in Figure 049-2.
Figure 049-2  Example of PAD Setting for CCIS
NAP-200-049
Sheet 2/2
PAD Setting
Terminating Office
0 dB
–8 dB–8 dB 0 dB
0 dB 0 dBDTI/CCT
Originating Office
0 dB
–8 dB–8 dB 0 dB
0 dB 0 dBDTI/CCT DTI/CCTTandem Office 
						

							NDA-24234 CHAPTER 6
Page 357
Revision 3.0
CHAPTER 6 FAULT RECOVERY DURING TESTS
1. GENERAL
The fault recovery procedures described in this Chapter are used when a connection cannot be established in the
normal manner or an abnormal connection is discovered as a result of the tests designated in Chapter 4, ”SYS-
TEM STARTUP”, and Section 2., “BASIC CONNECTION TEST” of CHAPTER 5.
2. OUTLINE OF PROCEDURE FOR FAULT RECOVERY
The procedures for performing fault recovery are described in the NAPs indicated to the right of each item in
the following flowchart.
START
Abnormal Lamp Indication After System Startup:NAP-200-050
Faulty DT (Dial Tone) Connection:NAP-200-051
Faulty Station To Station Connection:NAP-200-052
END 
						

							CHAPTER 6 NDA-24234
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FAULT RECOVERY DURING TESTS
NAP-200-050
Sheet 1/2
Abnormal Lamp Indications After System 
Startup
START
Check conducted when the OPE lamp (Green) does not turn ON on any circuit cards mounted in a PIM
Using MAT command “AU N T”, check whether UNIT data has been assigned.
Replace the TSW/MUX card in the PIM with a spare.
Check whether the flat cable connected to the “BUSXX” terminal on the PIM backplane is 
securely connected.
A PIM will occasionally malfunction due to a single circuit card mounted in the PIM. 
Therefore, check the circuit cards via the following steps:
Extract all circuit cards from the PIM other than the TSW/MUX and the PWR Supplies.
Insert one circuit card into its mounting slot and see if its OPE lamp turns ON. Repeat 
this procedure for the remaining circuit cards.
Check conducted when the OPE lamp (Green) does not turn ON on a Line Circuit card
Confirm that the MB switch of the circuit card is DOWN.
Using command “ASDT”, check whether station data is assigned to the circuits on the card.
Replace the card with a spare.
Check conducted when OPE lamp of a Line Circuit card illuminates, but the BL lamp (Red) for an 
individual line flashes
Using command “MBST”, confirm that the specific line is not in Make Busy state.
Using command “ASDT”, check whether station data has been assigned to the line circuit.
Replace the circuit card with a spare.
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
A 
						

							NDA-24234 CHAPTER 6
Page 359
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FAULT RECOVERY DURING TESTS
NAP-200-050
Sheet 2/2
Abnormal Lamp Indications After System 
Startup
Check conducted when the OPE lamp (Green) does not turn ON on a Trunk circuit card.
Confirm that the MB switch of the circuit card is DOWN.
Using command “AT R K”, check whether Trunk data has been assigned for the circuits on the 
card.
Replace the circuit card with a spare.
Check conducted when the OPE lamp of a Trunk circuit card turns ON, but the BL lamp (Red) for an 
individual circuit flashes.
Confirm that the MB switch for each circuit of the card is OFF.
Using command “MBTK”, confirm that the trunk circuit is not in Make Busy state.
Using command “AT R K”, check whether trunk data has been assigned for the trunk circuit.
Replace the circuit card with a spare.
Perform the following check before replacing a circuit card which is considered defective with a spare.
Confirm the switch settings on the circuit card.
Poor contact at the connector portion of the circuit card may be responsible for the malfunction. 
Check the circuit card once again by inserting and extracting it two or three times.
END
ATTENTIONContents
Static Sensitive
Handling
Precautions Required
A 
						

							CHAPTER 6 NDA-24234
Pag e 36 0
Revision 3.0
FAULT RECOVERY DURING TESTS
NAP-200-051
Sheet 1/1
DT (Dial Tone) Connection Fault
START
Dial tone is not heard.
On the MDF, check the cross connections between the telephone and the corresponding line 
circuit.
Check whether the LT cable is securely connected to the PIM.
Replace the LC card with a spare.
DT cannot be heard from one or more lines of the same circuit card.
Replace the LC card with a spare.
DT cannot be heard from the lines accommodated by a specific PIM.
Check the switch settings on the TSW/MUX circuit card.
Replace the TSW/MUX card with a spare.
Check the switch settings on the TSW circuit card.
Replace the TSW card with a spare.
Check whether the “MT24 TSW” cable is securely inserted to the connectors on the front edge 
of TSW and MUX cards.
END
ATTENTIONContents
Static Sensitive
Handling
Precautions Required