LG LKD-8DS, GDK-20W User Manual

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GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Digital Wireless Key Telephone System

Installation Manual

MODEL: GDK-20W

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

 

 

REVISION HISTORY

 

 

 

 

ISSUE

DATE

DESCRIPTION

 

ISSUE 1.0

1999. 08

Initial Release(Field Test)

 

ISSUE 1.1

1999. 10

-. Revised Admin Programming.

 

 

 

-. Added Section 4. ISDN Description

 

ISSUE 1.2

1999.12

Revised Page 60 ~ 63.

 

ISSUE 2.0

2001.04

-. Added notice of [Commission Decision CTR21 ].

 

ISSUE 2.1

2001.11

-. Added contents of supplementary sheet

 

Added GDC-340H wireless terminal and New LCOBs.

 

 

 

 

 

4

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Table of Contents

SECTION 1.

INTRODUCTION .........................................................................

7

1.1

Purpose .....................................................................................................................................

 

7

1.2

Regulatory Information .........................................................................................................

7

1.3

Abbreviations ...........................................................................................................................

9

SECTION 2.

GENERAL DESCRIPTION .....................................................

10

2.1

Introduction

.............................................................................................................................

10

2.2

System Capacity ...................................................................................................................

11

2.3

System Specifications .........................................................................................................

13

2.4

System Components ...........................................................................................................

15

SECTION 3.

INSTALLATION.........................................................................

19

3.1

Introduction

.............................................................................................................................

19

3.2

Site Preparation ....................................................................................................................

19

3.3

KSU & POWER Installation ...............................................................................................

21

3.4

PCB Installation .....................................................................................................................

24

3.5

System Wiring .......................................................................................................................

33

3.6

DECT Installation ..................................................................................................................

37

 

3.6.1 Overview of the DECT system ........................................................................................

37

 

3.6.2

System Configuration ......................................................................................................

46

 

3.6.3

Hardware Installation .......................................................................................................

56

 

3.6.4

User subscription/desubscription ....................................................................................

60

 

3.6.5 Summary of the DECT Installation ..................................................................................

66

SECTION 4.

ISDN DESCROPTION..............................................................

67

4.1

ISDN Boards in GDK-20W ................................................................................................

67

4.2

The Basic Features of ISDN Device(S-Interface) .......................................................

68

4.3

The Features of ISDN CO Line(T-Interface) ................................................................

70

SECTION 5. CAPACITIES & FEATURE CODES .....................................

72

5

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

5.1

System Capacities ...............................................................................................................

72

5.2

Feature Codes .......................................................................................................................

73

 

5.2.1

Number Plan ...................................................................................................................

73

 

5.2.2 Basic and Extended Numbering Plans ...........................................................................

75

 

5.2.3

LCD Months ....................................................................................................................

75

 

5.2.4

Audible Signals ................................................................................................................

76

 

5.2.5

Frequencies and Tones ..................................................................................................

77

 

5.2.6

GDK-20W Configuration .................................................................................................

79

 

5.2.7 GDK-20W Station Configuration with LKD 2B ................................................................

79

 

5.2.8 Maximum Number of Stations in GDK-20W ...................................................................

79

 

5.2.9 Maximum Number of CO Lines in GDK-20W ...................................................................

79

 

5.2.10 Maximum Number of Ports(Station/CO) in GDK-20W .....................................................

80

 

5.2.11

Wireless Cell / Terminal Configuration .............................................................................

80

 

5.2.12

Gain Control......................................................................................................................

80

SECTION 6. ADMIN PROGRAMMING........................................................

84

6.1

General Description .............................................................................................................

84

 

6.1.1

Introduction ......................................................................................................................

84

 

6.1.2 To Enter the Programming Mode......................................................................................

84

 

6.1.3

How to Program ..............................................................................................................

85

 

6.1.4

Button Definition ..............................................................................................................

87

6.2

Admin Programming ............................................................................................................

88

 

6.2.1

Admin Programming Index ..............................................................................................

88

 

6.2.2

Default Values .................................................................................................................

91

6

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

SECTION 1. INTRODUCTION

1.1 PURPOSE

This manual provides the information necessary to install, program, operate, and maintain the LG Digital Wireless Key Telephone System, GDK-20W.

1.2 REGULATORY INFORMATION

TELEPHONE COMPANY NOTIFICATION

Before connecting the GDK-20W to the telephone network, you may be required to notify your local servicing telephone company of your intention to use "customer provided equipment". You may further be required to provide any or all of the following information;

zNumber of telephone lines to be connected to the system

zModel name GDK-20W

zLocal regulatory agency registration number

zRinger equivalence

zRegistered jack

The necessary information is available from your local LGE representative.

INCIDENCE OF HARM

If the telephone company determines that the customer provided equipment is faulty any possibly causing harm or interruption in service to the telephone network, it should be disconnected until repair can be effected. If this is not done, the telephone company may temporarily disconnect service.

CHANGES IN SERVICE

The local telephone company may make changes in its communication facilities or procedures. If these changes could reasonably be expected to affect the use of the GDK-20W system or compatibility with the network, the telephone company is required to give advanced written notice to user, allowing the user to take appropriate steps to maintain telephone service.

MAINTENANCE LIMITATIONS

Maintenance on the GDK-20W Digital Wireless Key Telephone System must only be performed by the LGE or its authorized agent. The user may not make any changes and/or repairs except as specifically noted in this manual. Unauthorized alternations or repairs may affect the regulatory status of the system and may void any remaining warranty.

NOTICE OF RADIATED EMISSIONS

The GDK-20W Digital Wireless Key Telephone System complies with rules regarding radiation and radio frequency emission as defined by local regulatory agencies. In accordance with these agencies, you may be required to provide information such as the following to the end user.

7

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

WARNING :

"This equipment generates and uses R.F. energy, and if not installed and used in accordance with the Instruction Manual, it may cause interference to radio communications. It has been tested and found to comply with the appropriate limits for a telecommunication device. The limits are designed to provide reasonable protection against such interference, when operated in a commercial environment.

Operation of this equipment in a residential area could cause interference, in which case the user, at his own expense, will be required to take whatever measures may be required to correct the interference."

HEARING AID COMPATIBILITY

The GDK-20W Digital Wireless Key Telephone System has been designed to comply with the Hearing Aid Compatibility requirements as defined in Section 68.316 of Part 68 FCC Rules.

Pictures

The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.

Interference and Attenuation

The presence of another unsynchronized DECT system(including GDK-20W) or similar system in adjacent buildings may cause a strong interference and disconnection.

A base station and a wireless terminal may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from unsuppressed engines or electric motors may cause problems. In general, signals are attenuated to some low degrees when they have to pass through any barrier, however, some materials such as metal attenuate much degree.

Electrostatic Sensitive Devices

Boards which contain Electrostatic Sensitive Device(ESD) are indicated by the sign. The following information is ESD handling:

Service personnel should ground themselves by using a wrist strap when exchanging system boards.

When repairs are made to a system board, they should spread the floor with anti-static mat which is also grounded. Use a suitable, grounded soldering iron. Keep system boards and sensitive parts in the protective package until these are used. When returning system boards or parts like EEPROM to the factory, use the protective package as described.

REPLACEMENT OF LITHIUM BATTERIES

The GDK-20W Digital Wireless Key Telephone System is provided with replaceable Lithium Batteries on PMU for the purpose of protecting SRAM data including the system database and the real-time-clock from power loss. When the authorized Serviceman replaces them, it has to be carefully considered as followings,

CAUTION :

-. Danger of explosion if battery is incorrectly replaced.

-. Replace only with the same or equivalent type recommended by the

manufacturer.

-. Dispose of used batteries according to the manufacturer’s instructions.

8

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

1.3ABBREVIATIONS

For the purposes of this manual, following abbreviations are applied:

330-SSC, 340-SSC Single-Slot Charger

AC

 

Authentication Code

ADPCM

 

Adaptive Differential Pulse Code Modulation

BER

 

Bit Error Ratio

CCITT

 

International Telegraph and Telephone Consultative Committee

dBm

 

dB relative to 1 milliwatt

DECT

Digital Enhanced Cordless Telecommunications

ESD

 

Electrostatic Sensitive Discharge

FP

 

Fixed Part

GAP

 

Generic Access Profile

GDC-200B

Base Station

GDC-335H, GDC-340H Wireless Terminal

GFSK

Gaussian Frequency Shift Keying

IPEI

 

International Portable Equipment Identity

IPUI

 

International Portable User Identity

KSU

 

Key Service Unit

LED

 

Light Emitting Diode

MBU

 

Main Board Unit

PARK

Portable Access Right Key

PCB

 

Printed Circuit Board

PP

 

Portable Part

PSTN

Public Switched Telephone Network

RF

 

Radio Frequency

RFPI

 

Radio Fixed Part Identity

TDD

 

Time Division Duplex

TDMA

 

Time Division Multiple Access

WTIB

Wireless Terminal Interface Board

Notice 1:

If this equipment is not equipped with a standby battery supply it will not be possible to make calls to the emergency services when the power fails. Alternative arrangements should be made for access to emergency services.

Notice 2:

The equipment has been approved to [Commission Decision "CTR21" for pan-European single terminal connection to the Public Switched Telephone Network(PSTN). However, due to differences between the individual PSTNs provided in different countries the approval does not, of itself, give an unconditional assurance of successful operation on every PSTN network termination point.

In the event of problems, you should contact your equipment supplier in the first instance."

9

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

SECTION 2. GENERAL DESCRIPTION

2.1 INTRODUCTION

The GDK-20W Digital Wireless Key Telephone System is a fully digital hybrid Key Telephone System, designed to meet the telecommunication needs of small sized business offices & home base.

The GDK-20W System incorporates state-of-the-art digital technology for command processing and voice switching, utilizing a Pulse Code Modulation/Time Division Multiplexing (PCM/TDM) distributed switching matrix. The system supports both "A" and "Mu" law voice encoding rule based on the requirements of local regulations and the ADPCM voice coding to support DECT(Digital Enhanced Cordless Telecommunications) services.

The GDK-20W KSU(Key Service Unit) is wall mounted cabinet that house the MBU(Main Board Unit) and contain card slots for the CO line boards, extension boards and other useful PCBs. There are 6 slots in the system, the 1st fixed slot(slot1) is used to install only the DVIB/DVIBE(Digitized voice interface board) card, the 2nd,3rd fixed slots(slot2, slot3) are used to install one of the LCOB/LCOB2/LCOBE/LCOBA/LCOB4 or STIB/STIB2, the 4th fixed slot(slot 4) is used to install only the PMU(Program Module Unit) card and the 5th fixed slot(slot 5) is used to install the WTIB(Wireless terminal interface board) card. And the 6th fixed slot(slot6) is used to install only the MFB(Multi function board) card.

The GDK-20W System achieves a high level of flexibility by providing support for different types of instrumentation.

The system architecture has been designed to allow a high level of software control over the system's hardware. The software incorporates a vast array of features and capabilities including PC Database Administration, ISDN feature, Remote software downloading, etc.

The GDK-20W System supports a combination of Digital Keysets(LKD, KD, KD/E, KD/S, KD/C series), DECT terminals(GDC-335H, GDC-340H), and various kinds of ISDN terminals as well as analogue single line devices. With the keysets, commonly used features are activated by direct button selection. Additionally, many functions may be accessed by dialing specific codes or optionally, by assigning these dial codes to Flexible Buttons on the keyset. In addition to key telephones, an array of optional terminals is available including Intercom/Door Box

With the flexibility of the GDK-20W extensive feature content and the capability to use an array of instruments, the GDK20W can be tailored to meet the short and long term needs of the most demanding customer requirements.

* Note : The CO board(LCOB/LCOB2/LCOBE/LCOBA/LCOB4/STIB/STIB2), DVIB/DVIBE and MFB are used in common with GDK-16 Digital Key Telephone System.

10

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

2.2 SYSTEM CAPACITY

The following Table and Chart provide system capacities and display the system's configuration flexibility.

Table 2.2.1 System Capacities

Description

Basic & Expansion

 

Total

 

 

 

Time Slots

 

 

96

CO Line Ports

 

 

Max. 8 (analog CO and/or

 

 

 

ISDN BRI)

Max direct Station connections

 

 

6(+4 via 2B modules)

 

 

 

 

Max Stations via 2B modules

 

 

4

 

 

 

 

Max Stations via ISDN So bus

 

 

4

 

 

 

 

Max DECT terminals

 

 

20

 

 

 

 

DSS/DLS Consoles per station

 

 

0

 

 

 

 

Attendant Positions

 

1-System

Intercom Links

 

 

Non-blocking

 

 

 

 

Paging

 

 

 

-. All Call

 

 

1 zone

-. Internal

 

 

2 zones

Station Speed Dial

20/station, 24 digits each

 

20

System Speed Dial

24 digits each

 

79

Last Number Redial

 

 

32 digits

 

 

 

 

Music Source Inputs

2/PMU

 

2

External Control Contacts

1/MBU, 1/MFB

 

2

Alarm Input

1/MBU

 

1

RS-232C Ports

1/MFB

 

1

DTMF Receivers

2/PMU

 

2

CO Line Groups

 

 

4

 

 

 

 

Intercom Groups

 

 

4

 

 

 

 

Conference

3-party

 

no limit

*Note

1.Not all maximum capacities may be achieved simultaneously.

2.DECT terminals can be registered and used up to 20 stations. But GDK-20W system supports the only four(4) simultaneous calls basically because the MBU has one wireless terminal interface circuit.

When WTIB card is installed to SLOT5, the number of simultaneous calls is increased up to the twelve(12)(One base station provides the four(4) simultaneous calls.).

The WTIB has the two(2) wireless terminal interface ports.

3.One RS-232C port can be installed in the position of the MFB. The purpose of RS-232C port can be programmable in Admin station programming.

It is recommended that the RS-232C serial cable whose length is below 10 meters is used.

11

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Note : This Configuration Chart is made up according to the physical capacity of system.

CO

2B phone

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STIB2+STIB2(all T-mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STIB2+STIB2(So)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ISDN 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STIB2+STIB2(all S-mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

7

8

9

10

30

32

34

Basic 4DKT

 

 

 

 

 

 

 

 

DECT terminal

 

 

 

 

ISDN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic 2SLT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

terminal(So)

(6ports in MBU)

1) GDK-20W System Configuration Chart with STIB/STIB2(ISDN Board)

CO

2B phone

 

 

 

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

 

LCOB2+LCOB2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Analog 4

 

 

 

 

 

 

 

 

 

 

 

LCOB2+LCOB

 

 

 

 

 

 

 

 

 

 

 

 

Trunk

 

 

 

 

 

 

 

 

 

 

 

 

 

LCOB2

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

LCOB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STA

6

7

8

9

10

30

Basic 4DKT

 

 

 

 

 

 

 

 

DECT terminal

 

Basic 2SLT

 

 

 

 

 

 

 

 

 

 

 

(6ports in MBU)

2) GDK-20W System Configuration Chart with LCOB(or LCOBE,LCOBA)/LCOB2(or LCOB4)

FIGURE 2.2.1 GDK-20W System Configuration Chart

12

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

2.3 SYSTEM SPECIFICATIONS

The following Tables provide general system specifications.

Table 2.3.1 Dimensions & Weights

 

Item

 

Height

 

Width

 

Depth

Weight

 

 

 

 

 

 

 

 

 

 

Key Service Unit

 

346mm

 

246mm

 

90mm

3.6Kg

 

 

13.6in

 

9.7in

 

3.5in

 

 

 

 

 

 

 

 

Digital Key Set

 

236mm

 

192mm

 

84mm

1.5 Kg

 

 

9.3in

 

7.6in

 

3.3in

 

 

 

 

 

 

 

 

Digital ICM/Door Box

 

45mm

 

140mm

 

100mm

0.5 Kg

 

 

1.8in

 

5.5in

 

3.9in

 

 

 

 

 

 

 

 

Base station

 

170mm

 

220mm

 

57mm

420g

 

 

6.7in

 

8.7in

 

2.2in

 

 

 

 

 

 

 

 

DECT terminal

 

145mm

 

50mm

 

35mm

169g

 

 

5.7in

 

2.0in

 

1.4in

 

 

 

 

 

 

 

Table 2.3.2 Environmental Specifications

Item

 

Degrees C

 

 

degrees F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating Temperature

 

0-50

 

 

32-122

 

 

 

 

 

 

 

Optimum Operating Temperature

 

20-26

 

 

68-78

 

 

 

 

 

 

 

 

Storage Temperature

 

 

0-70

 

 

32-158

 

 

 

 

 

 

Relative Humidity

 

 

 

0-85% non-condensing

 

 

 

 

 

 

 

 

Table 2.3.3 Electrical Specifications

 

 

 

 

 

 

 

 

 

Power Supply :

* Note 1.

 

 

 

 

 

 

-. AC Voltage Input

 

 

 

220~240 Volts

AC @ 50~60Hz.

-. AC Power

 

 

 

 

 

60W

-. AC Input Fuse

 

 

 

 

 

T800mAH 250 V

-. DC Output Voltages

 

 

+5, -5, +30Volts(28-35V)

 

 

 

 

 

 

 

 

Back-up Battery :

 

 

 

 

 

 

 

-. Battery Back-up Voltage

 

 

 

 

24 Volt DC

-. Battery Back-up Fuse

 

 

 

 

T5AH 250V

-. Charging Current

 

 

 

 

 

Max. 100mA

-. Battery load Current

 

 

Max. 1A(with Analog CO or ISDN CO)

 

 

 

 

 

Ext. Relay Contacts

 

 

 

3 A @ 30 Volt DC

 

 

 

 

 

 

Music Source Input

 

 

 

 

600 ohm @ 0 dBm

STIB & STIB2 Power

 

 

Max. 3W(40Volt DC, 80mA)

* Note 1. For European Countries : This product is also designed for IT power system with Phase to Phase 230V.

13

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Table 2.3.4 Electrical Specifications

 

Item

22 AWG Wire

 

24 AWG Wire

 

 

 

 

 

 

 

Digital Keyset / Base station

500 m (1.6K feet)

 

300 m (1K feet)

 

-. 2-wire loop

 

 

 

 

 

 

 

 

 

 

2B modules(with Power Adapter,24Vdc/200mA)

 

 

 

 

-. System – Primary Keyset

Refer to Installation Manual of

 

-. Primary Keyset – Secondary Keyset

2B-SLIU30/DTIU30

 

-. Primary Keyset – Secondary SLT

 

 

 

 

 

 

 

 

2B modules(without Power Adapter)

Refer to Installation Manual of

 

-. Primary Keyset – Secondary Keyset

2B-SLIU30/DTIU30

 

-. Primary Keyset – Secondary SLT

 

 

 

 

 

 

 

 

 

 

Single Line Telephone

1,600 m (5.3K feet)

 

1,000 m (3.3K feet)

 

 

 

 

 

 

 

Table 2.3.5 CO Loop Specifications

 

 

 

 

 

 

 

Ring Detect Sensitivity

 

@ 20-60 Hz, 38 Vrms

 

 

 

 

 

 

 

DTMF Dialing

 

 

 

 

 

-. Frequency Deviation

 

less than ±1%

 

-. Signal Rise time

 

3 msec, maximum

 

-. Tone Duration, on-time

 

75 msec, minimum

 

-. Interdigit time

 

75 msec, minimum

 

 

 

 

 

 

 

Pulse Dialing

 

 

 

 

 

-. Pulse Rate

 

10 pps

 

-. Break/Make Ratio

 

60/40% or 66/33%

 

 

 

 

 

 

Table 2.3.6 Miscellaneous Specifications

 

 

 

 

 

 

 

 

 

Main System Memory

 

 

 

 

 

 

 

 

 

 

 

 

 

Program Memory,

 

1 Mwords Max. PMU U1 : 512Kwords

 

(FLASH MEMORY)

 

 

U2 : 512Kwords

 

Random Access Memory, SRAM

 

512Kbytes Max. PMU U3 : 256Kbytes

 

(Battery Backed-up)

 

 

U4 : 256Kbytes

 

 

 

 

 

 

14

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

2.4 SYSTEM COMPONENTS

Item

Slot

Circuit

Description

Remark

 

Position

Number

 

 

GDK-20W KSU(MBU)

 

 

4DKT + 2SLT + 1 WTI

 

 

 

 

 

 

DVIB

1

2

Digital Voice Interface

 

DVIBE

1

2

Digital Voice Interface +

 

 

 

 

DTMF Receiver 2EA

 

LCOB4

2,3

4

Loop Start CO Interface

PRU4, PRCPTU

LCOBA

2,3

2

Loop Start CO Interface

PRU4, PRCPTU

PRU4

LCOB4/

4

Polarity Detect 4 ports

 

 

LCOBA

 

 

 

PRCPTU4

LCOB4/

4

Polarity Detect 4 ports +

 

 

LCOBA

 

Call Progress Tone Detect 4 ports

 

LCOB

2,3

2

Loop Start CO Interface

 

LCOBE(SP)

2,3

2

Loop Start CO Interface

 

 

 

 

(Call Progress Tone Detect 2 ports)

 

LCOBE(w/PRU)

2,3

2

Loop Start CO Interface

 

 

 

 

(Polarity Detect 2 ports)

 

LCOB2

2,3

4

Loop Start CO Interface

 

STIB

2,3

1(2B)

ISDN 1So/To Interface

 

STIB2

2,3

2(4B)

ISDN 1So/To + 1To Interface

 

PMU

4

 

Program Module Unit

 

WTIB

5

2

Wireless Terminal Interface(2 WTI)

 

MFB

6

 

Battery Changing, RS-232C, Auto FAX

 

DVEU

DVIB/

 

Voice Memory Expansion Unit

 

 

DVIBE

 

 

 

 

 

 

 

 

15

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Key Service Unit (KSU)

The KSU is a plastic cabinet designed for wall mounting. The KSU contains a MBU(Main Board Unit) and POWER Transformer and Mechanical parts.

Main Board Unit (MBU)

A Power Supply Circuit is required in the Key Service Unit. The Power Supply Circuit converts local AC power(220~240V AC @ 50~60Hz) to DC voltages, regulates the voltages, and provides the appropriate DC voltages to the MBU for distribution to other system components. Three DC outputs are provided : ±5V DC, +30V DC.

The MBU, incorporates, master clock, one alarm detection circuit, one general purpose relay, watchdog circuitry and 4 ports digital terminal interface circuits and 2 ports SLT circuits as well as the system's PCM voice processing and main micro-processor. And the MBU contains one wireless terminal interface circuit that is used to install one base station to support 4 simultaneous DECT calls.

The micro-processor is a 16 bit high speed CPU that receives and transmits signaling information from/to other PCBs, controls feature activation, and PCM time-slot interchange. For digital voice processing, two ROM's contain PCM tone, gain table, etc.

There are two commonly used slots, SLOT2 and SLOT3, and four fixed slots for extending the system capacity. From the left side, the SLOT1 is used to install the DVIB/DVIBE. The SLOT2 and SLOT3 are used to install LCOB2/LCOB/LCOBE/LCOBA/LCOB4 and STIB2 / STIB. The SLOT4 is used to install the PMU basically. The SLOT5 is used to install the WTIB and the SLOT6 is used to install the MFB.

The permitted terminals are as following.

Keyset: KD-36D, KD-36N, KD-24D, KD-24N

KD/E-36EXE, KD/E-36ENH, KD/E-24EXE, KD/E-24ENH, KD/E-8BTN

LKD-2NS, LKD-8DS, LKD-30DS, etc

DECT terminal: GDC-330H, GDC-335H, GDC-340H

Program Module Unit (PMU)

The PMU is installed to SLOT4 basically and incorporates the system's memory, one internal and one external MOH ports, Real time clock circuit and two DTMF receivers. Each receiver is time-shared under the control of the system software.

The LEDs in upper side of the PMU panel indicates system’s power on/off state and data communication state. Also, the PMU contains 512Kbytes of RAM and 1Mwords of Flash memory.

The RAM associated with the system database and the real-time-clock is protected from power loss by a long life high energy lithium battery.

Two(2) Flash memory(U1 & U2, 512Kwords respectively) contains the basic system operating software.

Ring Generation Unit(RGU)

The GDK-20W system provides two kinds of ring signals. One is 50Hz sine wave signal generated from power transformer, another is 25Hz square wave signal from RGU.

The RGU is installed to connector,CN23,of MBU and generates 75Vrms ring signal that can be applied to the two(2) SLTs simultaneously.

Multi Function Board (MFB)

The Multi Function Board(MFB) Provides a RS-232C interface port with 9 pin connector. The maximum baud rate is 38400bps. The MFB is useful for system maintenance, PC based admin, SMDR print out and local software up-grade. It is recommended that the RS-232C serial cable whose length is below 10 meters is used.

The MFB includes circuitry for float charging an externally connected 24 volt battery and controls the operation of the battery back-up circuits. And the MFB will provide system operating voltages from the

16

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

battery if local AC power fails. In addition, circuitry is incorporated in the MFB to disconnect the battery when it is in deep discharge.

The MFB includes circuitry for Fax Tone Detection. By Admin-program, User use the MBU SLT Port 1 as Fax port instead of Analog CO port.

Fax Tone Detection Circuit & Function is supported from the MFB Issue 2.

The MFB includes one External Relay for General purpose.

MFB can be installed on the SLOT6.

Wireless Terminal Interface Board (WTIB)

The WTIB provides two(2) base station interface circuits and two(2) DSP circuits.

Base station interface circuits are used to connect base stations which interface wireless terminals(GDC-330H, GDC335H, GDC-340H) based on DECT specifications.

The DSP circuits perform 8 channels of ADPCM conversion with integral echo canceling and echo suppression.

WTIB can be installed on the SLOT5.

CO Line Interface Board – Loop Start (LCOB2/LCOB/LCOBE/LCOBA/LCOB4)

There are Analog CO/PABX Line interface(Loop-start line interface) boards that is installed at the SLOT2 & SLOT3. These boards has 2 CO/PABX Loop Start Lines and 4CO/PABX Loop Start Lines with ring and loop current detection, A/D and D/A conversions, and pulse signaling.

S/T Interface Board (STIB2)

The S,T interface is based on the existing interface described in ETSI 300. 012 which is based upon ITU_T Recommendations I.430 and provides modifications and further requirements.

This is applied at the S or T reference points for the basic interface structure defined in ITU_T I.412. Layer 1 interfacing requires a balanced metallic transmission medium, for each direction of transmit capability to support 192Kbps(2B+D). For interface circuits, one per transmission direction, are used for transmit digital signals. Data & bit clock are transmitted by the NT master and extracted by TE slave. The GDK-20W system can be positioned at reference point Ia or Ib on ETS 300. 012 that is TE-slave without power feeding or NT-master with power feeding. By selecting the short pin and DIP switch on each line interface, the STIB can support either S0-interface (Line card function) or T-interface (Trunk function).

The board line’s specific circuitry contains PEB2086 for Physical layer and data link layer. This board is comprised of one T only port and one S/T Switchable port.

STIB2 can be installed on the SLOT2 and SLOT3.

S/T Interface Board (STIB)

The S,T interface is based on the existing interface described in ETSI 300. 012 which is based upon ITU_T Recommendations I.430 and provides modifications and further requirements.

This is applied at the S or T reference points for the basic interface structure defined in ITU_T I.412. Layer 1 interfacing requires a balanced metallic transmission medium, for each direction of transmit capability to support 192Kbps(2B+D). For interface circuits, one per transmission direction, are used for transmit digital signals. Data & bit clock are transmitted by the NT master and extracted by TE slave. The GDK-20W system can be positioned at reference point Ia or Ib on ETS 300. 012 that is TE-slave without power feeding or NT-master with power feeding. By selecting the short pin and DIP switch on each line interface, the STIB can support either S0-interface (Line card function) or T-interface (Trunk function).

The board line’s specific circuitry contains PEB2086 for Physical layer and data link layer.

This board is comprised of one S/T Switchable port.

STIB can be installed on the SLOT2 and SLOT3.

17

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

DVIB (Digitized Voice Interface Board)

DVIB provides 2 channel Record/Play

DVIB provides Time & System prompt

All message are saved in Flash memory

Max record time : Without DVEU (68 Minutes), With DVEU(136 Minutes) (DVIB: 68 Min, DVEU: 68Min)

System/time stamp: 8 Min User record time: 128 Min

Max. Number of User Voice Message : 400ea(With DVEU)

(DVIB: 200ea, DVEU: 200ea)

DVEU(Digitized Voice Expansion Unit) : Optional PCB of DVIB

* Note: User Greeting does not lost by system power off or reset because of this message is stored in FLASH memory

MBU SW1-1 controls the protection of recorded messages.

DVIB should be installed on SLOT1.

18

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

SECTION 3. INSTALLAT ION

3.1 INTRODUCTION

As with any sophisticated communications device, installation of the GDK-20W System requires the care and fore-thought of a competent technician. Installation proceeds in 4 major steps:

-. Site Preparation

-. KSU Installation

-. PCB Installation

-. System Wiring

-. DECT Installation

3.2 SITE PREPARATION

General Site Considerations

The first step is to locate an acceptable site for the common equipment.(KSU, boards, etc.)

When locating a mounting site for the KSUs, the following points must be considered:

1.The KSUs are designed for wall mounting and should not be mounted directly to a masonry or plaster board wall. It is recommended that a ½ inch thickness plywood back-board be firmly mounted to the wall first and then the KSU.

2.The location must have access to 220~240 Volt AC, 50 - 60 Hz with a circuit breaker or fuse rated at 15 amps. A 3- wire parallel blade grounded outlet should be within approximately 2 meters (6 feet).

3.The location must have access to a good earth ground, such as a metallic cold water pipe with no non-metallic joints. The ground source should be located as close as possible to the system.

4.The system should be located in an area which is well ventilated with a recommended temperature of 20 - 26 degrees C (68 - 78.8 degrees F) and a relative humidity of 5 - 85 % (non-condensing).

5.The system should be located within 8 meters (25 feet) of the telephone company's termination point. Also, the location should be within the prescribed station loop lengths for all keysets and terminals. If existing cabling is to be employed, the location of existing cabling and conduits should be considered.

6.The location should have adequate accessibility, space and lighting for future servicing and should consider the need for future expansion.

7.The site should be away from radio transmitting equipment, arc-welding devices, copy machines, and other electrical equipment capable of generating electrical interference. The system should be protected from flooding and heavy machinery as well as excessive dust and vibration.

19

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Back-Board Installation

A wooden backboard is recommended for all installations and must be installed when the location has masonry or plasterboard walls. A ½ inch plywood material is sufficient for most installations. The back-board should be mounted at a convenient height, about 1 meter above the floor, and be bolted in two number of places to distribute the weight of the system.

Verify On-Site Equipment

Once the equipment installation site has been identified and a dedicated earth ground, and lighting and ventilation are available, verify that all equipment required are on-site and have not been damaged during shipment. Assure there is no shipping damage. Note that a mounting template is packed with KSU and this template will be required later in the installation. Check that the type and quantity of boards received is correct and optional equipment are on-site.

If any equipment is damaged or missing, notify appropriate personnel to correct the situation.

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GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

3.3 KSU & POWER INSTALLATION

GDK-20W system consists of KSU, some optional boards, and peripheral instruments. The exterior view of the GDK-20W is shown in Figure 3.3.1.

Figure 3.3.1 GDK-20W Exterior View

Mounting the KSU

The KSU is a plastic frame cabinet designed for wall mounting. Employing the KSU mounting template provided with the KSU, mark the location of the two screws to mount the KSU. Again, the KSU must not be mounted on a masonry or drywall surface, in this case a wooden backboard is required, refer to paragraph [Back Board Installation]. The distance between mounting holes is shown in Figure 3.3.2.

The KSU is mounted with two #10 or larger, 1.5 inch or longer screws. First, drill pilot holes in the two locations marked, insert the screws and tighten leaving about 0.5 inch exposed. Hang up the KSU on the screws and tighten the KSU.

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GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Figure 3.3.2 KSU Mounting Holes & Installation layout

Power Installation

The Power Supply Circuit of the MBU provides power for the system boards and telephones, converting the AC Input Voltage to appropriate DC voltages. Before installation, assure that the AC power cord is NOT plugged into the AC INLET. The Power Supply Circuit is located on the left upper side of the MBU.

The GDK-20W Power can only operate 220~240V AC based on the connection of the cable(4-wired) by the CN22 from transformer and the connection of the cable(2-wired) by the CN21 to transformer.

Input Voltage

Connect to

Fuse

 

 

 

230V(+10%, -15%)

CN21

T800mAH 250V

 

 

 

* Caution : the GDK-20W Power can not operate with 110~127V AC.

22

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

KSU Grounding

The GDK-20W mains lead must be connected to a building mains supply that includes an earth connection in conformance with current IEE requirements.

Earthling is required for user safety and to minimize EMC interference.

If does not connected mains earth, to ensure proper system operation and for safety purpose, a good earth ground is required. A metallic COLD water pipe usually provides a reliable ground. Carefully check that the pipe does not contain insulated joints that could isolate the ground path. If insulated joints exist, another earth ground source must be used or, if allowed, the joints may be bridged.

A #14 AWG or larger copper wire should be used between the ground source and the connector, CN27, of the KSU. The wire should be kept as short as possible, it is recommended that the wire be no longer than 8 meters.(about 25 feet)

23

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

3.4 PCB INSTALLATION

PCB Handling & General Installation

All boards should not be installed or removed while power applied.

Power must be turned off prior to insertion or removal of the PCB.

The system PCBs contain digital circuitry which can be damaged by exposure to excessive static electricity. When handling PCBs, a grounded wrist strap should be used to protect the boards from static discharges. Also, use common sense when handling the PCBs. For example, do not place a PCB in locations where heavy objects might fall on the PCB and damage components.

To insert a PCB, hold the PCB and, with component side facing right, insert the card into the MBU’s din connector firmly and tighten. To remove a PCB, reverse the procedure. Installation method of PCB is shown in Figure 3.4.1.

Figure 3.4.1 PCB Installation

There are 6 slots in the GDK-20W system for extend or modify the system configuration. But, there are some restrictions when optional board installation. Note that the system can not operate properly with wrong installation. The SLOT1 of the MBU is reserved only for DVIB/DVIBE, the SLOT2 & SLOT3 is reserved for LCOBs or STIB2/STIB, the SLOT4 are reserved only for PMU and the SLOT5 and SLOT6 is reserved for WTIB and MFB, respectively.

To summarize, see the following table 3.4.1.

Slot No.

Cards

Remark

 

 

 

SLOT1

DVIB, DVIBE

Fixed slot for DVIB

SLOT2

LCOB2, LCOB, LCOBE,

Option board for LCO, ISDN

SLOT3

LCOBA, LCOB4,STIB2, STIB

 

SLOT4

PMU

Fixed slot for PMU(Basic)

SLOT5

WTIB

Fixed slot for WTIB

SLOT6

MFB

Fixed slot for MFB

[Table 3.4.1] Option Boards Installation Table

When the system power on, the default slot assignment is automatically redefined according to board installation status.

Main Board Unit (MBU) Installation

The MBU is installed in the KSU default. It comprised of main processor, four(4) Digital Terminal interface circuits, two(2)

24

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Single Line Telephone interface circuits, six(6) card slots for optional boards, one(1) Wireless terminal interface circuit and data communication circuit which transmits and receives to/from other cards. The MBU is equipped with one basic card; a PMU for program memory, data memory, and etc. Refer to Figure 3.4.2.

Figure 3.4.2 MBU Installation

The MBU provides screw-down terminal blocks that is used to connect the peripheral instruments; Keyset, SLT, Base station, and etc. Four(4) DKTUs are connected to MBU through terminal block, CN18, and two(2) SLTs are connected to the SLT1 & SLT2 ports of terminal block, CN19. The connection between MBU and base station is performed through the WTI1 port of terminal block, CN19. All of peripheral instruments are installed by using twisted one pair copper line.

25

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Figure 3.4.3 RGU connector and protection switch setting

Following table shows the connector and switch on GDK-20W MBU.

 

Switch

Description

Remark

ISSUE 1

 

Manufacturer

 

setting

 

 

 

 

 

 

 

 

 

 

 

CN23

 

 

Pin 1&2 short: 50Hz ring signal(sine wave)

Dependent on country

 

 

RGU plugged: 25Hz ring signal(square wave)

adaptation.

 

 

1-1 ( OFF)

ON: For database protection.

Turn ON the switch

SW 1

 

OFF: For system default.

after system power on.

 

 

 

1-2 (OFF)

OFF : Loop back OFF

OFF (Always)

 

 

 

 

 

 

 

The MBU has a two position DIP switch(SW1). The following is the function of each switch position :

Knob 1 System data base initialization when power on

-. On : Do not initialize system data base when power on. -. Off : Initialize system data base when power on.

Knob 2 ISDN Loop Back on

-. On : Loop Back on

-. Off : Loop Back off

Before programming the system, SW1(knob 1) should be placed in the Off position and turn the system power off and on to initialize the system database to default. Once the database has been initialized, SW(knob 1) should be placed in the on position to protect the database in the memory. Refer to Figure 3.4.3.

26

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

PMU Installation

The PMU must be installed to SLOT4 on the MBU basically for the system operation. Refer to Figure 3.4.2.

The PMU contains a lithium dry-cell to keep the memory contents and real-time clock functions during power off. The battery is soldered to the PMU, and connected circuitry by an on/off DIP switch(SW2). So the DIP switch knob must be ON position before the PMU installation.

The PMU provides two kinds of MOH sources, internal MOH and external MOH.

External MOH source is input through black screw-down terminal, CN5, on the PMU. Refer to Figure 3.4.4.

And there are five red LEDs on the PMU, the function of them are as follows.

LD1

Display system software operation

 

-. This LED will turn on and turn off at every 100 msec.

LD2

Display task changing (software testing purpose)

 

-. This LED will be turn on/off toggle when call task changing.

LD3

Display task changing (software testing purpose)

 

-. This LED will be turn on/off toggle when timer task changing.

LD4

Indication for DKT data comm. error

 

-. This LED will be turn on/off toggle for keyset data comm. Error.

LD5

Display task changing

 

-. This LED will be turn on/off toggle when DECT task changing.

Figure 3.4.4 PMU Installation

27

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

RGU Installation

The RGU generates 25Hz square wave ring signal.

The RGU is installed to connector, CN23, of the MBU and generates 75Vrms ring signal that can be applied to the two(2) SLTs simultaneously.

Figure 3.4.5 RGU Installation

MFB Installation

The RS-232C of MFB board is used for the function of system maintenance, PC based Admin, SMDR print local software up-grade.

The Followings are the list of the system’s output. -. Administration data base

-. Off-Line SMDR(on-demand) -. On-Line SMDR

-. Statistical Information -. System Trace data

The installation method is shown in Figure 3.4.6.

Figure 3.4.6 MFB installation

28

LG LKD-8DS, GDK-20W User Manual

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

Analog CO/PABX Line Interface Boards (LCOB: Loop-start) Installation

The LCOB2, LCOB, LCOBE, LCOBA, and LCOB4 can be installed on the SLOT2 & SLOT3

The exterior of them are shown in Figure 3.4.7.

This board provides two(2) Loop Start ports and four(4) Loop Start ports.

Board

Slot

Port No.

 

 

 

LCOB2, LCOB4

SLOT2 & 3

4

 

 

 

LCOB, LCOBE, LCOBA

SLOT2 & 3

2

 

 

 

[Table 3.4.2] LCOBs

Figure 3.4.7 Analog CO Interface Boards

ISDN STIB2 & STIB (S/T Interface Board) Installation

It should be noted that the STIB2 & STIB board should be installed on the SLOT2&SLOT3 of the MBU.

The STIB2 provides 1 port of BRI(Basic Rate Interface-‘T’ mode only) and 1port of ‘S’ and ‘T’ mode Switchable interface and STIB provides 1 port of ‘S’ and ‘T’ mode Switchable interface.

Select the jumpers and DIP switches for S0 or T0 interface. Be sure to connect ISDN trunk to T0 interface port and ISDN extension to S0 interface port. Check if ISDN trunk is not connected to S0 interface port and ISDN extension is not connected to T0 interface port.

The mode selection method is shown in table 3.4.3.

 

SW2

 

SW1

 

 

 

 

 

 

S/T Port

CN2

1 Port STIB

 

SW2

 

SW1

 

 

S/T Port

CN2

2 Port STIB

T Port

 

SW3

Figure 3.4.8 Switches and connector for the STIB

29

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

 

Jumper/

Manufacture

 

 

 

Description

 

 

 

Remark

 

 

Switch

Setting (T mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW1 &

SW1 :OFF

S0 or T0 interface mode selection for the

 

 

 

 

 

CN2

CN2 : T position

port and PEB2086 device respectively.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW2

Pin1-2: OFF

#1 and #2 : External Power feeding ON/OFF.

 

 

 

 

 

Pin3-4 : ON

#3 and #4 : Termination Resistor ON/OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SW3

ON

Termination Resistor ON/OFF

 

Only for T0 interface.

 

 

 

 

 

 

 

(a) Selection Method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port

 

 

Connector

 

Mode

 

 

Selection Method

 

 

 

 

 

 

 

& Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

SW1

 

T

 

Move short pins to CN2’s ‘T’ position

 

 

 

So/To (CO1-2 or

 

 

SW2

 

 

Move SW1, SW2 to ‘T’ position(OFF)

 

 

 

 

 

 

 

 

 

 

 

2So station 130-131)

 

 

CN2

 

S

 

Move short pins to CN2’s ‘S’ position

 

 

 

 

 

 

 

 

 

 

Move SW1, SW2 to ‘S’ position(ON)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

To

 

 

 

 

 

 

 

 

 

 

 

 

 

(CO3-4 or 1-2)

 

 

SW3

 

T only

 

Move SW3 to ON position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(b) Port meaning for STIB2 of SLOT2

[Table 3.4.3] S/T Mode Selection Method

Figure 3.4.9 STIB2

It is noted that the ‘PWR’ and the ‘R’’ markings on the STIB2 & STIB card are switched with above figure.

30

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

WTIB (Wireless Terminal Interface Board) Installation

The WTIB provides 2 ports of base station interfaces. The connection between the WTIB and base stations(GDC-200B) are performed through TERMINAL BLOCK(CN1) by using twisted one pair copper line.

The exterior of the board is shown in Figure 3.4.10.

It should be noted that the WTIB board could be installed on the SLOT5.

Figure 3.4.10 WTIB

DVIB (Digitized Voice Interface Board) Installation

The DVIB provides 2 voice channels. The maximum record time of a DVIB without DVEU(Digitized Voice Expansion Unit) is 68 minutes and if a DVEU is installed, additional 70 minutes is added to the maximum record time. And the protection of recorded messages is controlled by MBU SW1-1.

MBU

Description

System message

User message

 

 

 

 

SW1-1

OFF : for system default

Not deleted

Deleted

 

 

 

ON : for database protection

Not deleted

Not deleted

 

 

 

 

 

[Table 3.4.4] Protection of recorded messages

The DVIB board should be installed on the SLOT1 of MBU. And the DVEU board should be installed correctly on the CN4 and CN5 of DVIB. If the boards are incorrectly installed, DVIB or DVEU may be operated abnormally or damaged.

The connectors of a DVIB board is shown in figure 3.4.11. CN2 is used for the trace of a DVIB board using a trace data monitor tool(GDK-TRC1). CN4 and CN5 are used for a DVEU installation. CN1 is inserted on SLOT1 of MBU and CN3 is used for a test.

31

GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM

 

 

 

 

 

 

CN5

 

 

 

 

 

DVEU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 3.4.11 Connectors of the DVIB

Figure 3.4.12 DVIB

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