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NEC NEAX 2400 ICS Manual

NEC NEAX 2400 ICS Manual

Digital remote unit system
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Download this manual See also: Feature Manual, Installation Manual
ND-45383 (E)
ISSUE CD 1.0
STOCK # 200716
®
DRU System Manual
JANUARY, 1996
NEC America, Inc.

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  • Page 1 ND-45383 (E) ISSUE CD 1.0 STOCK # 200716 ® DRU System Manual JANUARY, 1996 NEC America, Inc.
  • Page 2 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 em- ployees and customers. The information contained herein is the property of NEC America, Inc. and shall not be reproduced without prior written approval from NEC America, Inc.
  • Page 3 ND-45383 (E) ISSUE CD 1.0 JANUARY, 1996 NEAX2400 IMS DRU System Manual TABLE OF CONTENTS Page LIST OF FIGURES ..............iv LIST OF TABLES .

  • Page 4: Table Of Contents

    TABLE OF CONTENTS (CONTINUED) Page 3.1.4 Specifications of the DRU ..........9 3.1.5 Circuit Cards in the DRU .
  • Page 5 TABLE OF CONTENTS (CONTINUED) Page 3.1.2 When Installing the DRU on the Floor Using Stand Assembly (STAND ASSEM) (Option) ............. 34 Installation of the DRU .
  • Page 6 TABLE OF CONTENTS (CONTINUED) Page 3.7.2 Cross Connections for Digital Interface (When remotely installing the DRU-23-S3 by Digital Interface)......... . 98 3.7.3 Cable Termination and Cross Connection from the DRU-30-A/DRU-30-S3 to the term Analog PB TEL/D...
  • Page 7 TABLE OF CONTENTS (CONTINUED) Page FAULT DIAGNOSIS BY LOOP-BACK TEST ........129 Loop-Back Diagnosis from the DLI to the DRU .
  • Page 8 LIST OF FIGURES Figure Page Figure 2-1 Outline of NEAX2400 IMS when the DRU is used ....... . 3 Figure 2-2 Outer View of the DRU .
  • Page 9 LIST OF FIGURES Figure Page Figure 3-7 Drilling for Setting the STAND ASSEM ........35 Figure 3-8 Fastening of the STAND ASSEM .
  • Page 10 LIST OF FIGURES Figure Page term Figure 3-28 Details of D Connection..........103 Figure 3-29 “CHAMP”...
  • Page 11 LIST OF TABLES Table Page Table 1-1 Configuration of the DRU System Manual ........1 Table 1-2 Related Reference Manuals.

  • Page 12: Table 1-1 Configuration Of The Dru System Manual

    CHAPTER 1 INTRODUCTION 1. GENERAL This manual describes the outline of the functions, installation procedure and maintenance, etc. of the DRU (Digital Remote Unit). How to use this manual is described in Section 2: “HOW TO FOLLOW THE MANU- AL” in this chapter. Be sure to read it before continuing. 1.1 Configuration of the DRU System Manual The configuration of this manual is shown in Table 1-1.

  • Page 13: Table 1-2 Related Reference Manuals

    1.2 Related Reference Manuals This manual describes only items related to DRU. For detailed explanations on the NEAX2400 IMS as a whole, maintenance procedures and installing various kinds of terminal equipment, refer to the manuals shown in Table 1-2. Table 1-2 Related Reference Manuals MANUAL DESCRIPTION NEAX2400 IMS Installation...

  • Page 14: Figure 2-1 Outline Of Neax2400 Ims When The Dru Is Used

    CHAPTER 2 GENERAL INFORMATION FOR DRU 1. GENERAL This chapter explains the outline of the functions of the DRU, the system components, and loop-back test func- tions. 2. SYSTEM OUTLINE 2.1 Purpose of the DRU The DRU is a system which extends and decentralizes the Line Circuits (LC/DLC/ELC), which have so far been accommodated in the PIM of the NEAX2400 IMS, using the digital line interface.

  • Page 15: Features Of The Dru

    2.2 Features of the DRU The DRU has the following features. term • In the case of the conventional NEAX2400 IMS, cables for connecting the D s to the system are re- term quired as many as the number of D s/Analog PB TELs.

  • Page 16: Figure 2-2 Outer View Of The Dru

    3. DESCRIPTION OF SYSTEM COMPONENTS This section explains the following system components of the DRU. • DRU (Digital Remote Unit) • Batteries • Functions of Circuit Cards for the DRU 3.1 DRU (Digital Remote Unit) 3.1.1 Outer View of the DRU Figure 2-2 shows the outer view of the DRU.

  • Page 17: Figure 2-3 Example Of Installation Of The Dru (Wall Mounting)

    3.1.3 How to Install the DRU The DRU can be installed by one of the following methods. • Mounting on the wall. • Installing on the floor using the stand assembly (STAND ASSEM) (Option). • Installing plural sets of the DRU at one location using the 19-inch rack (Option). Figures 2-3 through 2-5 show examples of installation of the DRU.

  • Page 18: Figure 2-4 Example Of Installation Of The Dru (Floor Installation Using Stand Assem) (Option)

    • When the battery is set inside the DRU • When the battery is installed externally D R U D R U B O X B A T T A S S E STAND ASSEM STAND ASSEM Note: The external battery and the BATT BOX ASSEM must be locally provided. Figure 2-4 Example of Installation of the DRU (Floor Installation using STAND ASSEM) (Option) ND-45383 (E) CHAPTER 2...

  • Page 19: Figure 2-5 Example Of Installation Of The Dru (Mounting On The 19-Inch Rack) (Option)

    • When installing 4 sets of DRU • When installing 3 sets of DRU 19-inch Rack (IEC Spec.) BATT BOX ASSEM (Standard) BATT BOX UNIT (Special) Note 1: The 19-inch rack should be provided by the installer. Note 2: The external battery and the BATT BOX ASSEM must be locally provided. Figure 2-5 Example of Installation of the DRU (Mounting on the 19-inch rack) (Option) CHAPTER 2 ND-45383 (E)

  • Page 20: Table 2-1 Specifications Of The Dru

    3.1.4 Specifications of the DRU Table 2-1 and 2-2 show specifications pertaining to the DRU. Table 2-1 Specifications of the DRU SPECIFICATIONS ITEM DRU-30-A DRU-30-S3 DRU-23-S3 Number of Circuits 30 circuits ELC Mode DLC Mode ELC Mode DLC Mode Voice 30 circuits Voice15 circuits Voice23 circuits Voice 12 circuits...

  • Page 21: Figure 2-6 Outer View Of Dre Card In Dru-30-A

    3.1.5 Circuit Cards in the DRU The DRU is equipped with a DRE (Digital Remote Equipment) card which provides interface between term the DRU and the NEAX2400 IMS and between the DRU and the D /Analog PB TEL. Figures 2-6 through 2-8 show the outer view of the DRE card, and Table 2-3 describes lamp indications of the DRE card.
  • Page 22 PZ-CC94 LINK SW70 SW73 SW74 SW71 BATT1 BATT0 CHAMP1 IVDCN CHAMP0 PZ-23ELCK Figure 2-7 Outer View of DRE Card in DRU-23-S3 ND-45383 (E) CHAPTER 2 Page 11 Revision CD 1.0...

  • Page 23: Table 2-3 Dre Card Lamp Indication Reference Table

    PZ-CC79 LINK SW70 SW71 SW72 BATT1 BATT0 CHAMP1 IVDCN CHAMP0 PZ-30ELCL Figure 2-8 Outer View of DRE Card in DRU-30-S3 Table 2-3 DRE Card Lamp Indication Reference Table LAMP COLOR STATE REMARKS NAME LINK Green Signal link with the NEAX2400 IMS is established. An alarm such as a clock failure, frame loss, etc.

  • Page 24: Table 2-4 Specifications Of The Battery

    3.2 Batteries (Option) Normally, the DRU operates on AC operating power. The optional battery can be equipped to the DRU so that the DRU can continue its operation even if the AC power supply to the DRU has stopped due to an AC power supply outage.

  • Page 25: Figure 2-9 Mounting Location Of Dli Card

    3.3.2 Functions of Circuit Cards for the DRU This paragraph explains the mounting location, front view, and indicator lamps of the DLI and 2DLI cards. SYMBOL:DLI CIRCUIT CARD:PA-DAIA FUNCTION:Digital Line Interface This circuit card provides the interface between the NEAX2400 IMS and DRU-30-A/DRU-30-S3. INTERFACE: •...

  • Page 26: Figure 2-10 Front View Of Pa-Daia

    FRONT VIEW: • Figure 2-10 shows front view of the PA-DAIA card. N-OPE LINK MFRM BLUE PALM Figure 2-10 Front View of PA-DAIA ND-45383 (E) CHAPTER 2 Page 15 Revision CD 1.0...

  • Page 27: Table 2-5 Pa-Daia Lamp Indication Reference Table

    LAMP INDICATIONS: • Table 2-5 shows the lamp indications. Table 2-5 PA-DAIA Lamp Indication Reference Table LAMP NAME COLOR STATE REMARKS Indicates that a loop-back test is in progress. Green Indicates that the circuit card is operating normally. N-OPE This circuit card is not in operation due to MB switch software. LINK Green Indicates that a signal link with the DRU is established.
  • Page 28 SYMBOL:DLI CIRCUIT CARD:PA-DAIC FUNCTION:Digital Line Interface This circuit card provides the interface between the NEAX2400 IMS and DRU-23-S3. INTERFACE: • Communication Speed: 1.544 Mbps • Line Impedance: 100 ohms • The interface wires for this circuit card are accommodated by the LT terminal (on the PIM backplane) as- sociated with the DLI card’s mounting slot.

  • Page 29: Figure 2-11 Front View Of Pa-Daic

    FRONT VIEW: • Figure 2-11 shows front view of the PA-DAIC card. N-OPE LINK BLUE PALM Figure 2-11 Front View of PA-DAIC CHAPTER 2 ND-45383 (E) Page 18 Revision CD 1.0...

  • Page 30: Table 2-6 Pa-Daic Lamp Indication Reference Table

    LAMP INDICATIONS: • Table 2-6 shows the lamp indications. Table 2-6 PA-DAIC Lamp Indication Reference Table LAMP NAME COLOR STATE REMARKS Indicates that a loop-back test is in progress. Green Indicates that the circuit card is operating normally. N-OPE This circuit card is not in operation due to MB switch or soft- ware.

  • Page 31: Figure 2-12 Mounting Location Of 2Dli Card

    SYMBOL:2DLI CIRCUIT CARD:PA-2DAID FUNCTION:Digital Line Interface This circuit card provides two interface circuits for connection between the NEAX2400 IMS and DRU-30-A/ DRU-30-S3. INTERFACE: • Communication Speed: 2.048 Mbps/1 circuit • Line Impedance: 75/120 ohms • The interface wires for this circuit card are accommodated by the LT terminal (on the PIMB backplane) associated with the DLI card’s mounting slot.

  • Page 32: Figure 2-13 Front View Of Pa-2Daid

    FRONT VIEW: • Figure 2-13 shows front view of the PA-2DAID card. OPE1 OPE0 LINK1 ALM1 RM/BLU1 PALM1 LINK0 ALM0 RM/BLU1 PALM0 SW01 Figure 2-13 Front View of PA-2DAID ND-45383 (E) CHAPTER 2 Page 21 Revision CD 1.0...

  • Page 33: Table 2-7 Pa-2Daid Lamp Indication Reference Table

    LAMP INDICATIONS: • Table 2-7 shows the lamp indications. Table 2-7 PA-2DAID Lamp Indication Reference Table LAMP NAME COLOR STATE REMARKS OPE1 Green Indicates that the No. 1 circuit is operating normally. OPE0 Green Indicates that the No. 0 circuit is operating normally. LINK1 Green Indicates that a signal link with the DRU is established.

  • Page 34: Table 2-8 Relationship Between Each Circuit On The Dli And Lens

    4. DATA PROGRAMMING PLAN FOR DRU This section explains the relationship between each circuit on the DLI card and LENS (Line Equipment Num- bers). 4.1 Relationship between Each Circuit on the DLI Card and LENS Table 2-8 shows the relationship between each circuit on the DLI card and LENS. Table 2-8 Relationship between Each Circuit on the DLI and LENS PA-DAIA PA-DAIC...
  • Page 35 DRU 23-53 Example of B1 mode and B2 mode Port and Cable Breakout. 23 ELC B1 mode Single Port mode 11 DLC & ELC B2 mode Dual Port mode Time Time Station Port Champ Station Port Champ Slot Device Slot Conn.

  • Page 36: Figure 2-14 Local Loop-Back Check

    5. LOOP-BACK FUNCTION TEST Loop-back tests are executed to verify the normality of the installed DRU, to perform fault localization in an event of occurrence of a line fault. The DRU loops back all the signals (all of voice, data, control signal links) between the DLI and the DRU.

  • Page 37: Figure 2-15 Remote Loop-Back Check

    5.2 Remote Loop-Back Check This test checks to see if the test signal sent out (using the control signal link) to the remote office can be received as it has been sent out, thus verifying the normality of the line (the transmission line between the DLI and the DRU).

  • Page 38: Figure 2-16 Remote Loop-Back

    5.3 Remote Loop-Back This test loops the signals arrived from the remote office directly back to the remote office so as to have the remote office perform verification of the normality of the line (the transmission line between the DLI and the DRU) by Remote Loop-Back Check.

  • Page 39: Figure 3-1 Static Caution Indication

    CHAPTER 3 INSTALLATION PROCEDURE 1. GENERAL This chapter explains the work procedures pertaining to the installation of the DRU, cable connections with the battery, switch setting on the circuit cards, cable connections between the NEAX2400 IMS and the DRU and term between the DRU and D /Analog PB TEL.

  • Page 40: Figure 3-2 3M Model 8012 Portable Field Service Kit

    The 3M Model 8012 Portable Field Service Kit (Figure 3-2) is recommended as an effective countermeasure against static electricity. The kit is available from NEC. Wrist Strap Place the Circuit Card on a conductive sheet. Connect ground wire to the Earth terminal of the Module Group.

  • Page 41: Installation Procedure

    3. INSTALLATION PROCEDURE The procedure to install the DRU is as follows. START Marking and Drilling Referring to Paragraph 3.1: “Marking and Drilling”, make marking and drilling at the location when the DRU is to be in- stalled. Installation of the DRU Referring to Paragraph 3.2: “Installation of the DRU”, install the DRU.

  • Page 42: Figure 3-3 Marking For Mounting The Dru On The Wall

    3.1 Marking and Drilling 3.1.1 When Mounting the DRU on the Wall START Marking Referring to Figure 3-3, mark the DRU setting locations. Drilling Referring to Figure 3-4 or 3-5, drill holes at the locations marked for the DRU. Put wood screws (CRWS × 4.1 × 20 × 15BF) into the drilled holes, leaving the top portion of each screw above the level by 5 mm.

  • Page 43: Figure 3-4 Drilling For Mounting The Dru On The Concrete Wall

    Drill with a drill bit of 3Φ ∼ 5Φ. 50mm(2 inches) Drill with a drill bit of 7Φ. 50mm(2 inches) Inset an anchor (Carl PC plug) into each drilled hole. Specifications of Carl PC plug are as shown below. PART OUTER OUTER DIAMETER DRILL...

  • Page 44: Figure 3-6 Marking For The Stand Assem

    3.1.2 When Installing the DRU on the Floor Using Stand Assembly (STAND ASSEM) (Option) START Marking Referring to Figure 3-6, mark the STAND ASSEM setting lo- cations. Drilling Referring to Figure 3-7, drill holes at the locations marked for the STAND ASSEM. Referring to Figure 3-8, fasten the STAND ASSEM onto the floor.

  • Page 45: Figure 3-7 Drilling For Setting The Stand Assem

    Drill with a drill bit of 3Φ ∼ 5Φ. 50mm(2 inches) Drill with a drill bit of 7Φ. 50mm(2 inches) Inset an anchor (Carl PC plug) into each drilled hole. Specifications of Carl PC plug are as shown below. PART OUTER OUTER DIAMETER DRILL...

  • Page 46: Figure 3-8 Fastening Of The Stand Assem

    STAND ASSEM Set Screw Set Screw Figure 3-8 Fastening of the STAND ASSEM CHAPTER 3 ND-45383 (E) Page 36 Revision CD 1.0...

  • Page 47: Figure 3-9 Remove The Dru Cover

    3.2 Installation of the DRU 3.2.1 When Mounting the DRU on the Wall START Referring to Figure 3-9, remove the cover off the DRU. Referring to Figure 3-10, hook up the DRU onto the wood screws inset on the wall. Fasten the DRU onto the wall by tightening the wood screws.

  • Page 48: Figure 3-10 Installation Of The Dru (Wall Mounting)

    Wood screw Wood screw Figure 3-10 Installation of the DRU (Wall Mounting) CHAPTER 3 ND-45383 (E) Page 38 Revision CD 1.0...

  • Page 49: Figure 3-11 Installation Of The Dru (Floor Installation By The Stand Assem)

    3.2.2 When Installing the DRU on the Floor Using Stand Assembly (STAND ASSEM) (Option) START Referring to Figure 3-9, remove the cover off the DRU. Referring to Figure 3-11, hook up the DRU onto the screws (PL-C. P. IMS × 4 × 10 × 15BF) provided at the four corners of the STAND ASSEM.

  • Page 50: Figure 3-12 Installation Of The Dru (When Mounting 4 Sets Of Dru Onto The 19-Inch Rack)

    3.2.3 When Mounting the DRU on the 19-inch Rack (Option) Mount the DRU onto the 19-inch rack by referring to Figures 3-12 and 3-13. Note: The 19-inch rack should be provided by the installer. 19-inch Rack (IEC Spec.) DRU Mounting M.T.G 1958 mm (7'5"...

  • Page 51: Figure 3-13 Installation Of The Dru (When Mounting 3 Sets Of Dru Onto The 19-Inch Rack)

    19-inch Rack (IEC Spec.) 1958 mm (7'5" inches) 2100 mm (7'10" inches) BATT BOX ASSEM (Standard) DRU Mounting M.T.G BATT BOX UNIT (Standard) Note: The battery and the BATT BOX ASSEM are Locally Provided. Figure 3-13 Installation of the DRU (When Mounting 3 Sets of DRU onto the 19-inch Rack) ND-45383 (E) CHAPTER 3 Page 41...

  • Page 52: Figure 3-14 Confirmation Of Short Piece

    3.3 Confirmation of Power Cable of the DRU Referring to Figure 3-14, confirm that a short circuiting cable is connected across the 100V/200V terminals on the Power Supply in the DRU. If the short piece is not connected across the above-mentioned terminals, connect it.

  • Page 53: Figure 3-15 Battery Connection (When Mounting The Battery Within The Dru)

    3.4 Mounting of the Battery (Option) 3.4.1 When Mounting the Battery within the DRU START Referring to Figure 3-15, mount the battery to the DRU. Referring to Figure 3-16, connect the battery cable. Battery Set screw Battery Cover Figure 3-15 Battery Connection (When Mounting the Battery within the DRU) ND-45383 (E) CHAPTER 3 Page 43...

  • Page 54: Figure 3-16 Battery Cable Connection (When Mounting The Battery Within The Dru)

    Battery Cable BATT0 BATT1 DRE card Battery Figure 3-16 Battery Cable Connection (When Mounting the Battery within the DRU) CHAPTER 3 ND-45383 (E) Page 44 Revision CD 1.0...

  • Page 55: Figure 3-17 Battery Mounting

    3.4.2 When Mounting the Battery Externally START Referring to Figure 3-17, mount the battery onto the BATT BOX ASSEM. Referring to Figure 3-18, connect the battery cable. BATT BOX ASSEM (–) (–) Battery Figure 3-17 Battery Mounting ND-45383 (E) CHAPTER 3 Page 45 Revision CD 1.0...

  • Page 56: Figure 3-18 Battery Cable Connection (When Mounting The Battery Externally)

    DRE Card BATT0 Battery Cable Note 1 BATT1 (–) (–) BATT BOX ASSEM Note 2 Note 1: As the battery cable, use DRU EX-Battery Lau Stock # 240542. Note 2: As the terminals at the battery side, use terminals of Fasten Terminal 187 Series. Figure 3-18 Battery Cable Connection (When Mounting the Battery Externally) CHAPTER 3 ND-45383 (E)

  • Page 57: Switch Setting Of The Dre Card

    ATTENTION Contents Static Sensitive Handling Precautions Required 3.5 Switch Setting of the DRE Card Referring to switch setting sheets of the DRE card, make switch setting on the DRE card in the DRU. When handling circuit cards, observe the following precautions: Note: (1) Protection Against Static Electricity When setting switches on circuit cards, use a Portable Field Service Grounding Kit in order to prevent dam-...

  • Page 58: Switch Setting Sheet Of Dre Card In Dru-30-A

    3.5.1 Switch Setting Sheet of DRE Card in DRU-30-A SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC63/PZ-30LCP Handling Precautions Required Switch Settings Note 2 Note 1 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 PZ-CC63 (IMP) LINK...
  • Page 59 SYMBOL CIRCUIT CARD ATTENTION PZ-CC63/PZ-30LCP Contents Static Sensitive Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “2”.
  • Page 60 SYMBOL CIRCUIT CARD ATTENTION PZ-CC63/PZ-30LCP Contents Static Sensitive Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “11”.
  • Page 61 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC63/PZ-30LCP Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “20”.
  • Page 62 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC63/PZ-30LCP Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “24”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “25”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “26”.
  • Page 63 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC63/PZ-30LCP Handling Precautions Required Note 2: Switch setting for Loop-Back Test SW1-6 SW1-7 When loop-back test is not performed (Normal setting) When setting the DRE to Remote Loop-Back When setting the DRE to Local Loop-Back Check When setting the DRE to Remote Loop-Back Check ND-45383 (E) CHAPTER 3...
  • Page 64 3.5.2 Switch Setting Sheet of DRE Card in DRU-23-S3 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ-23ELCK Handling Precautions Required Switch Settings Note 4 Note 3 Note 6 Note 2 Note 1 Note 5 Note 7 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SW70 SW71...
  • Page 65 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ-23ELCK Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “0”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”.
  • Page 66 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ23ELCK Handling Precautions Required SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”.
  • Page 67 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ-23ELCK Handling Precautions Required SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”.
  • Page 68 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ-23ELCK Handling Precautions Required Note 2: Switch setting when specifying baud rate of data transmission * SW70-1 64 Kbps 48/56 Kbps *This switch setting must agree with the switch setting on the associated PA-DAIC card. Note 3: Switch setting for 12 Multi Frame/24 Multi Frame Format SW70-2...
  • Page 69 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC94/PZ-23ELCK Handling Precautions Required Note 5: Switch setting specifying the Equalizer (The distance between the DRU and the PCM MUX) SW71-1 SW71-2 SW71-3 0 ~ 266 feet 266 ~ 534 feet 534 ~ 800 feet 800 ~ 1066 feet 1066 ~ 1310 feet For in-premises direct installation...
  • Page 70 3.5.3 Switch Setting Sheet of DRE Card in DRU-30-S3 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required Switch Settings Note 1 Note 2 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SW70 SW71 PZ-CC79...
  • Page 71 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “2”.
  • Page 72 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”.
  • Page 73 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”.
  • Page 74 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “24”. SW70 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “25”.
  • Page 75 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PZ-CC79/PZ-30ELCL Handling Precautions Required Note 2: Switch setting for Loop-Back Test SW71-6 SW71-7 When loop-back test is not performed (Normal setting) When setting the DRE to Remote Loop-Back When setting the DRE to Local Loop-Back Check When setting the DRE to Remote Loop-Back Check ND-45383 (E) CHAPTER 3...
  • Page 76 ATTENTION Contents Static Sensitive Handling Precautions Required 3.6 Setting of Switch Positions and Mounting of the DLI Card Note: When handling circuit cards, observe the following precautions: (1) Protection Against Static Electricity When setting switches on circuit cards, use a Portable Field Service Grounding Kit in order to prevent dam- age to static-sensitive components.
  • Page 77 ATTENTION Contents Static Sensitive Handling Precautions Required START Unpacking the Circuit Cards Unpack each circuit card and remove it from its polyethylene bag. Clean the connector portion of the Wipe the connector portion clean using a soft cloth moistened Circuit Cards with pure trichlorethelene or methanol (medical alcohol).

  • Page 78: Figure 3-19 Circuit Card Mounting (Partial Insertion)

    ATTENTION Contents Static Sensitive Handling Precautions Required About 50 mm (2 inches) Figure 3-19 Circuit Card Mounting (Partial Insertion) CHAPTER 3 ND-45383 (E) Page 68 Revision CD 1.0...
  • Page 79 3.6.1 PA-DAIA Card Switch Setting Sheet SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required Switch Settings CON2 CON1 DOWN N-OPE CON1 CON2 Note 4 LINK 1 2 3 4 MFRM BLUE PALM Note 1 BL4~7 1 2 3 4 5 6 7 8 BL0~3 Note 5 Note 2...
  • Page 80 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “2”.
  • Page 81 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “11”.
  • Page 82 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “20”.
  • Page 83 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “24”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “25”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “26”.
  • Page 84 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required Note 2: Switch setting for 30LC/30ELC/15DLC Mode SW1-5 For DRU-30-A (30LC Mode) For DRU-30-S3 30ELC Mode 15DLC Mode Note 3: Switch setting for selection of stutter DT/MW Lamp SW1-7 Stutter DT and MW Lamp MW Lamp term...
  • Page 85 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required Note 5: Switch setting for designating the case where simultaneous communications of voice and APA/APR (Analog Port Adapter) are performed or the case where the Data Adapter is used. * SW3-3: for No.
  • Page 86 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIA Handling Precautions Required Note 6: Switch setting for Loop-Back Test SW3-1 SW3-2 When loop-back test is not performed (Normal setting) When setting the DLI to Local Loop-Back Check When setting the DLI to Remote Loop-Back When setting the DLI to Remote Loop-Back Check Note 7: Switch setting specifying BL lamp indications SW3-7...
  • Page 87 3.6.2 PA-2DAID Card Switch Setting Sheet SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required Switch Settings Note Note 5 Note 4 Note 1 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SW20 SW21 DOWN...
  • Page 88 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * SW11: for No. 0 DLI SW21: for No. 1 DLI SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”.
  • Page 89 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”.
  • Page 90 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”.
  • Page 91 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “24”. SW11/SW21 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “25”.
  • Page 92 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required Note 2: Switch setting for type of DRU SW13-1 (for No. 0 DLI)/23-1 (for No. 1 DLI) DRU-30-A DRU-30-S3 Note 3: Switch setting for 30LC/30ELC/15DLC Mode SW10-5 (for No. 0 DLI)/SW20-5 (for No. 1 DLI) For DRU-30-A For DRU-30-S3 30ELC Mode...
  • Page 93 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive 2DLI PA-2DAID Handling Precautions Required term Note 5: Switch setting for bit rate of D Data Port SW10-3. SW10-4. (for No. 0 DLI)/ (for No. 0 DLI)/ SW20-3. SW20-4. (for No. 1 DLI)/ (for No.
  • Page 94 SYMBOL CIRCUIT CARD ATTENTION 2DLI PA-2DAID Contents Static Sensitive Handling Precautions Required Note 7: Switch setting for Loop-Back Test SW01-1,2: for No. 0 DLI SW01-3,4: for No. 1 DLI SW01-1,3 SW01-2,4 When loop-back test is not performed (Normal setting) When setting the DLI to Local Loop-Back Check When setting the DLI to Remote Loop-Back When setting the DLI to Remote Loop-Back Check Note 8: Switch setting specifying BL lamp indications...
  • Page 95 3.6.3 PA-DAIC Card Switch Setting Sheet SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required Switch Settings CON2 DOWN N-OPE CON2 Note 8 Note 9 LINK 1 2 3 4 BLUE PALM Note 4 Note 3 Note 2 Note 1 BL4~7 1 2 3 4 5 6 7 8...
  • Page 96 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required Note 1: Switch setting when specifying channels of the signal data link. * 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “0”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “1”.
  • Page 97 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “9”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “10”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “11”.
  • Page 98 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “18”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “19”. 1 2 3 4 5 6 7 8 When setting channel number of the signal data link to “23”.
  • Page 99 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required Note 4: Switch setting of m-bit (4 Kbps) data link system of 24 Multi Frame Format ** SW2-3 BOS (Bit Oriented Signals) System MOS (Message Oriented Signals) System **This switch setting is valid only when SW2-2 has been set to OFF. When SW2-2 has been set to ON, SW2- 3 must be set to OFF.
  • Page 100 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required Note 8: Switch setting for the PAD value for a case where the line of DLI card is connected via the Network. SW0-1 SW0-2 0 dB (For in-premise direct installation) 2 dB 5 dB 8 dB...
  • Page 101 SYMBOL CIRCUIT CARD ATTENTION Contents Static Sensitive PA-DAIC Handling Precautions Required Note 11: Switch setting for Loop-Back Test SW3-1 SW3-2 When loop-back test is not performed (Normal setting) When setting the DLI to Local Loop-Back Check When setting the DLI to Remote Loop-Back When setting the DLI to Remote Loop-Back Check Note 12: Switch setting specifying BL lamp indications SW3-7...
  • Page 102 term 3.7 Cable Termination and Cross Connection from the MDF to the DRU and from the DRU to the D Analog PB TEL This paragraph explains the following work procedures. • Cable Termination and Cross Connection from the MDF to the DRU •...

  • Page 103: Figure 3-20 Connection Of Dru

    DRE card CHAMP1 CHAMP0 2-pair cable LT Connector Cable CHAMP0 Connector Cable (25P) (MALE) (25P) (MALE) CHAMP0 Connector Lead To RA lead of DLI card To TA lead of DLI card To TB lead of DLI card To RB lead of DLI card DLI Leads To RA lead of CHAMP0 connector of DRU POUTB...

  • Page 104: Figure 3-21 "Lt" Connector Pin Accommodation For The Dli Mounted In Pima

    • The DLI (PA-DAIA/PA-DAIC) cards can be mounted in the slots indicated by *A, *B, and *C. *A-Card *B-Card *C-Card LT1,5,7,11 LT2,4,8,10 LT3,5,9,11 POUTB POUTA POUTB POUTA POUTB POUTA LT9 LT10 LT11 LT Connector Name Slot No. 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 15 19 23 15 19 23 01 03 05 07 09 11...

  • Page 105: Figure 3-22 "Lt" Connector Pin Accommodation For The Dli Mounted In Pimb

    • The DLI (PA-DAIA/PA-DAIC) cards can be mounted in the slots indicated by *A, *B, and *C *A-CARD *B-CARD *C-CARD LT0,2,4, 6, 7, 9 LT1,3,5,8,10 LT1,3,5,8,10 POUTB POUTA POUTB POUTA POUTB POUTA LT9 LT10 LT Connector Name Slot No. 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 07 15 23 03 07 11 15 19 23 06 14 22...
  • Page 106 • The 2DLI (PA-2DAID) card can be mounted in the slots indicated by *A and *B *A-CARD *B-CARD LT0,4,7,9 LT1,5,8,10 LT2,6,7,9 POUTB0 POUTA0 No.0 POUTB1 POUTA1 No.1 POUTB0 POUTA0 No.0 POUTB1 POUTA1 No.1 LT9 LT10 LT Connector Name Slot No. 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 07 15 23 03 07 11 15 19 23...
  • Page 107 • The 2DLI (PA-2DAID) card can be mounted in the slots indicated by *C *C-CARD LT3,5,8,10 POUTB1 POUTA1 No.1 POUTB0 POUTA0 No.0 LT9 LT10 LT Connector Name Slot No. 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 07 15 23 03 07 11 15 19 23 06 14 22...
  • Page 108 3.7.2 Cross Connections for Digital Interface (When remotely installing the DRU-23-S3 by Digital In- terface) START Check terminal locations on the DLI Card While referring to Figures 3-21 and NEAX2400 IMS side of the MDF. 3-22, identify the lead names for the DLI card and the terminal locations of the leads.

  • Page 109: Figure 3-24 Connection Of Digital Interface For Img (Ics)

    MAXIMUM 200 meters (656 feet) PCM CABLE (2P) PCM Carrier Equipment "LT" Connector Cable To DRU-23-S3 (25P) PCM CABLE (2P) PCM Carrier Equipment MAXIMUM 100 meters (328 feet) DLI LEADS LT3 (PIMA0/B0) Note To PCM Carrier "LT3" Connector Cable Equipment (25P) To "DIU x A&B"...

  • Page 110: Figure 3-25 Connection Of Digital Interface For Mmg (Ics)

    MAXIMUM 200 meters (656 feet) PCM CABLE (2P) PCM Carrier Equipment "LT" Connector Cable To DRU-23-S3 (25P) PCM CABLE (2P) PCM Carrier Equipment MAXIMUM 100 meters (328 feet) DLI LEADS LT3 (PIMA0/B0) Note To PCM Carrier "LT3" Connector Cable Equipment (25P) To "DIU x A&B"...

  • Page 111: Figure 3-26 Connection Of Analog Pb Tel/D Term

    3.7.3 Cable Termination and Cross Connection from the DRU-30-A/DRU-30-S3 to the Analog PB TEL/ term START Cable running While referring to Figure 3-26, run cables between each Analog term PB TEL/D and its Modular Block (Jack), and between the Modular Blocks and the IDF. Protect the cables using cable ducts, etc.

  • Page 112: Figure 3-27 Details Of Analog Pb Tel Connection

    CHAMP Connector Lead CABLE PAIR MODULAR BLOCK (JACK) MODULAR CABLE Analog PB TEL MODULAR JACK Figure 3-27 Details of Analog PB TEL Connection CHAPTER 3 ND-45383 (E) Page 102 Revision CD 1.0...

  • Page 113: Figure 3-28 Details Of D Term Connection

    CHAMP Connector Lead CABLE PAIR MODULAR BLOCK (JACK) MODULAR CABLE term MODULAR JACK term Figure 3-28 Details of D Connection ND-45383 (E) CHAPTER 3 Page 103 Revision CD 1.0...

  • Page 114: Figure 3-29 "Champ" Connector Pin Accommodation For Dru-30-A/Dru-30-S3

    DRU-30-A/DRU-30-S3 DRE card CHAMP1 CHAMP0 LEAD LEAD LEAD LEAD NAME NAME NAME NAME No.22 CKT To NEAX2400 IMS No.23 CKT No.0 CKT No.24 CKT No.1 CKT No.25 CKT No.2 CKT No.26 CKT No.3 CKT No.27 CKT No.4 CKT No.28 CKT No.5 CKT No.29 CKT No.6 CKT...

  • Page 115: Figure 3-30 Connection Of D Term

    term 3.7.4 Cable Termination and Cross Connection from the DRU-23-S3 to the D START term Cable running While referring to Figure 3-30, run cables between each D and its Modular Block (Jack), and between the Modular Blocks and the IDF. Protect the cables using cable ducts, etc.
  • Page 116 DRU-23-S3 DRE card CHAMP1 CHAMP0 LEAD LEAD LEAD LEAD NAME NAME NAME NAME No.22 CKT To NEAX2400 IMS No.0 CKT No.1 CKT No.2 CKT No.3 CKT No.4 CKT No.5 CKT No.6 CKT No.7 CKT No.8 CKT No.9 CKT No.10 CKT No.11 CKT No.12 CKT No.13 CKT...

  • Page 117: Cleaning And Visual Inspection

    3.8 Cleaning and Visual Inspection START Cleaning Clean the inside of the DRU. Clean the area around the DRU, rectifier, and MDF/IDF. Clean the location for the field office. Dispose of dust, trash, etc. Visual Inspection Confirm that DLI Mounted in NEAX2400 IMS are partially in- serted.

  • Page 118: Chapter 4 Installation Test Procedure

    CHAPTER 4 INSTALLATION TEST PROCEDURE 1. GENERAL This chapter explains the procedure to start up the DRU, the basic functional tests, and loop-back tests to be per- formed after the installation has completed. 2. INSTALLATION TEST PROCEDURE The installation test procedure of the DRU is shown below. START Start-up of the DRU Referring to Paragraph 2.1: “Start-up of the DRU”, start up the...

  • Page 119: Start-Up Of The Dru

    2.1 Start-up of the DRU START Set the MB switch of the DLI card UP. Insert the DLI card into its mounting slot. Plug the AC cord of the DRU into the AC outlet. Turn ON the operating power to the DRU. Set the MB switch of the DLI card DOWN.

  • Page 120: Check Of Lamp Indications And System Messages

    ATTENTION Contents Static Sensitive Handling Precautions Required 2.2 Check of Lamp Indications and System Messages START Check lamp indications on the DLI Confirm that the OPE lamp (G) on the DLI card illuminates. card If any lamp is indicating abnormality, check the switch setting on the DLI card, mounting slot of the DLI card, cable connec- tion to the MDF, setting of the office data, etc.

  • Page 121: Check Of Loop-Back Test Execution Required/Not Required

    ATTENTION Contents Static Sensitive Handling Precautions Required 2.3 Check of Loop-Back Test Execution Required/Not Required START Check lamp indications on the DLI Check to see if the lamp indications on the DLI card are as card shown below. LAMP CIRCUIT CARD LAMP NAME INDICATION PA-DAIA...

  • Page 122: Check Of Battery Operation When Power Supply Failure To The Dru

    ATTENTION Contents Static Sensitive Handling Precautions Required Confirm that the lamp indications of the DRE card as shown be- Check lamp indications on the DRE low. card in the DRU LAMP LAMP NAME INDICATION LINK (G) ALM (R) LB (R) When the lamp indications are as shown above, perform the fol- lowing loop-back tests.

  • Page 123: Figure 4-1 Mounting Of The Dru Cover

    3. MOUNTING OF COVER This section explains the method of mounting the cover of the DRU after the installation tests have completed. START Referring to Figure 4-1, mount the cover of the DRU. When the battery is externally installed, mount the cover onto the BATT BOX ASSEM by referring to Fig- ure 4-2.

  • Page 124: Chapter 5 Maintenance Procedure

    CHAPTER 5 MAINTENANCE PROCEDURE 1. GENERAL This chapter explains system messages pertaining to the DRU, the procedure of fault diagnosis by loop-back tests between the NEAX2400 IMS and the DRU, and the fault repair procedure. For other matters, refer to the NEAX2400 IMS System Maintenance Manual.

  • Page 125: Table 5-1 System Messages For The Dru

    Table 5-1 System Messages for the DRU SYSTEM FAULT NAME CONTENTS OF FAULT MESSAGE 13-N Digital Line Warning During data transfer from the NEAX2400 IMS to the DRU, such a fault as frame loss, multi-frame loss, signal link down detect, etc. has occurred. 13-O Digital Line Failure A fault represented by the system message “13-N”...

  • Page 126: Figure 5-1 Relation Between Accommodated Location Information And Mounting Location

    2.1.1 Circuit Card Location Information The accommodated location information of each circuit card is given by a hexadecimal number. 1 : XX00 Module Group Number Unit Number Group Number PIMA3 MG=01 PIMB3 MG=01 for MMG (ICS) PIMA2 MG=00 PIMB2 PIMA1 MG=01 PIMB1 MG=00...
  • Page 127 Relation between Data Values (Hexadecimal) and MG, U&G Data Data Data Data Value Value Value Value (XX) (XX) (XX) (XX) CHAPTER 5 ND-45383 (E) Page 118 Revision CD 1.0...
  • Page 128 Relation between Data Values (Hexadecimal) and MG, U&G (Continued) Data Data Data Data Value Value Value Value (XX) (XX) (XX) (XX) ND-45383 (E) CHAPTER 5 Page 119 Revision CD 1.0...

  • Page 129: How To Proceed With Diagnostic Work From System Message

    2.2 How to Proceed with Diagnostic Work from System Message The diagnostic procedure you should follow, after seeing a system message, is illustrated in Figure 5-2. Judge whether the fault status coincides with the indicated status, following the sequence beginning with START.

  • Page 130: Figure 5-2 Example Of Diagnostic Work Items And Symbols

    START FAULT : It is the fault of When Perform FAULT SUPERVISION When FAULT : It is the fault of When When with FAULT performed CHECK OF WORK Note: (1): Judgment of faulty status (2): When the fault status coincides with the indication, the cause for the fault is indicated. (3): Operating items for diagnosis (4): Branching of the result of the operation (5): Judgment of the status of the result of the operation...

  • Page 131: System Messages

    If the fault of the digital line is restored to normal, the system message “13-P” is printed out. (3) Example of Printout SYSTEM MESSAGE 13-N [SUP] DIGITAL LINE WARNING NEC TOKYO MAY 14 10:30 LP00-0-ACT 1: 0701 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000...
  • Page 132 (4) Message Detail Data 1: XX XX Kind of fault 01: Frame loss PCM down (Minor) 02: Bit error more than 10 03: Slip detected (Minor) 05: Signal link down detected 06: Multiframe loss (Minor) 11: Frame loss PCM down (Major) 12: Bit error 10 13: Slip detected (Major) 14: Remote office alarm detected...

  • Page 133: Fault Diagnosis By Loop-Back Test

    (5) Diagnostic from System Message START On the DLI card indicated as faulty, flip its MB switch to DOWN → UP →DOWN. After “13-N” / “13-O” Digital Line Failure has FAULT SUPERVISION been indicated, “13-P” is being indicated. The Message Detail Data of “13-N” is indicating The remote-office side DRU in the DLI card or “14: Remote office alarm detected”, and RMT the transmission equipment has detected a fault,...
  • Page 134 If the fault of the digital line is restored to normal, the system message “13-P” is printed out. (3) Example of Printout SYSTEM MESSAGE 13-O [MN] DIGITAL LINE FAILURE NEC TOKYO MAY 14 10:30 LP00-0-ACT 1: 0701 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000...
  • Page 135 This system message is displayed when a fault indicated by System Message “13-N” or “13-O” has been re- paired. (3) Example of Printout SYSTEM MESSAGE 13-P DIGITAL LINE RESTORE NEC TOKYO MAY 14 10:30 LP00-0-ACT 1: 0701 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000 (4) Message Detail Data...
  • Page 136 R” is printed out. (3) Example of Printout SYSTEM MESSAGE 13-Q [SUP] DRU BATTERY OPERATION NEC TOKYO MAY 14 10:30 LP00-0-ACT 1: 0700 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000 (4) Message Detail Data...
  • Page 137 If the AC power supply to the DRU stops and the DRU starts operating on the battery, the system message “13-Q” is printed out. (3) Example of Printout SYSTEM MESSAGE 13-R AC LINE OPERATION NEC TOKYO MAY 14 10:30 LP00-0-ACT 1: 0700 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000 (4) Message Detail Data...

  • Page 138: Procedure For Loop-Back Diagnosis From The Dli To The Dru

    3. FAULT DIAGNOSIS BY LOOP-BACK TEST This section explains loop-back diagnosis by loop-back tests. Loop-back diagnosis by loop-back tests is available in the following three kinds. • Loop-Back Diagnosis from the DLI to the DRU (Paragraph 3.1) • Loop-Back Diagnosis between the DLI and the Transmission Equipment (Paragraph 3.2) •...
  • Page 139 (c) PA-DAIC card • LINK (G): ON, flashing, or OFF • CRC (R): • PCM (R): One or more than one • FRM (R): lamp illuminates. • RMT (R): • BLUE (R): Set SW3-1 and SW3-2 of the DLI card to UP. Remove the cover off the DRU and set SW1-6 of the DRE card in the DRU to UP.

  • Page 140: Loop-Back Diagnosis Between The Dli And The Transmission Equipment

    FAULT • The transmission line between On the DLI card, various lamps are indicating as the DLI and the DRU is faulty. follows. • The DRU is faulty. (a) PA-DAIA card • LINK (G): ON, flashing or OFF Paragraph 4.2: DRU Fault •...

  • Page 141: Transmission Equipment

    3.2.1 Procedure for Loop-Back Diagnosis between the DLI and the Transmission Equipment START PCM lamp (red) on the DLI card illuminates. Check to see if the power supply to the transmis- sion equipment is normal or not. Also, check the connection between the DLI and the transmission equipment.
  • Page 142 FAULT The signal link channel of the On the DLI card, various lamps are indicating as DLI is not being transmitted follows. transparently by the transmis- sion equipment. (a) PA-DAIA card (1) Check transmission • LINK (G): equipment. • CRC (R): ON, flashing or OFF •...

  • Page 143: Loop-Back Diagnosis Between The Dru And The Transmission Equipment

    (b) PA-2DAIA card • LINK0, 1 (G): ON, flashing or OFF • ALM0, 1 (R): One or more than one • RM/BLU0, 1 (R): lamp illuminates. (c) PA-DAIC card • LINK (G): ON, flashing, or OFF • CRC (R): • PCM (R): One or more than one •...

  • Page 144: Transmission Equipment

    3.3.1 Procedure for Loop-Back Diagnosis between the DRU and the Transmission Equipment START Remove the cover off the DRU. ALM lamp (red) on the DRE card in the DRU il- Check to see if the power supply to the transmis- luminates.
  • Page 145 FAULT • The transmission equipment is Lamps on the DRE card are indicating as follows. faulty. Check the transmission equip- • LINK (G): ON, flashing, or OFF ment. • ALM (R): ON (or may be flickering) • The transmission line between the DRI and the transmission equipment is faulty.

  • Page 146: Fault Repair Procedure

    4. FAULT REPAIR PROCEDURE This section explains the repair procedure of the following faults. • DLI Fault (Paragraph 4.1) • DRU Fault (Paragraph 4.2) • Battery Fault (Paragraph 4.3) 4.1 DLI Fault START On the DLI card, set the MB switch UP and extract the DLI card from its mounting slot. On a spare DLI card, set the switches.

  • Page 147: Dru Fault

    4.2 DRU Fault START On the DLI card, set the MB switch UP. Turn OFF the power supply to the DRU. Unplug the AC cord of the DRU from the AC outlet. Remove the cover off the DRU. Remove the cable connected with PWR, LED, BATT0 and BATT1 connectors of the DRE card in the DRU. Remove the cable connected with the CHAMP connectors of the DRE card.

  • Page 148: Battery Fault

    4.3 Battery Fault (1) When the battery is mounted inside the DRU START On the DLI card, set the MB switch UP. Turn OFF the power supply to the DRU. Remove the cover off the DRU. Remove the cable connected with BATT0 and BATT1 connectors of the DRE card in the DRU. Loosen the three screws which are fastening the battery cover.
  • Page 149 (2) When the battery is installed externally START On the DLI card, set the MB switch up. Turn OFF the power supply to the DRU. Remove the cover off the BATT BOX ASSEM. Remove the cable connected to the battery. Replace the battery with a spare and mount it onto the BATTBOX ASSEM.

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