LG GHX-308A/616 Assembly instructions

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HYBRID KEY TELEPHONE
SYSTEM
INSTALLATION AND
PROGRAMMING MANUAL
MODEL : GHX - 308A/616
LG Electronics Inc.

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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REVISION HISTORY
ISSUE DATE DESCRIPTION OF CHANGES S/W VERSION
ISSUE 1.0A 1997.11 Initial Release 1.0A

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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TABLE OF CONTENTS
SECTION 1. INTRODUCTION
1.1 PURPOSE ................................................................................................................ 7
1.2 REGULATORY INFORMATION ................................................................................ 7
SECTION 2. GEN ERAL DESCRIPTION
2.1 INTRODUCTION ...................................................................................................... 9
2.2 SYSTEM DESCRIPTION ......................................................................................... 9
2.3 SYSTEM CAPACITY ............................................................................................... 9
2.4 SYSTEM SPECIFICATION ....................................................................................... 10
2.5 EQUIP MENT DESCRIPTION .................................................................................... 11
2.6 KEY TELEPHONES & TERMINALS ......................................................................... 12
SECTION 3. INSTALLATION
3.1 SITE PL ANNING ........................................................................................................ 13
3.2 VERIFY ON- SITE EQUIPMENT ................................................................................. 13
3.3 KSU MOUNTING ...... ................................................................................................. 14
3.4 POWER VOLTAGE SELECTION ............................................................................... 15
3.5 KSU GROUNDING ...................... .............................................................................. 15
3.6 POWER LINE SURGE PROTECTION ....................................................................... 15
3.7 UNCOVERING THE KSU ........................................ ................................................... 16
3.8 MULTI FUNCTION UNIT(MFU) INSTALLATION ........................................................ 17
3.9 CO/PABX CONNECTIONS ....................................................................... ................. 17
3.10 KEY TELEPHONE/SLT CONNECTIONS ................................................................... 17
3.11 POWER FAILURE TRANSFER CONNECTION ......................................................... 19
3.12 PHONE BOX CONNECTION ..................................................................................... 19
3.13 LOUD BELL CONTROL CONNECTION .................................................................... 20
3.14 EXTERNAL PAGING CONNECTION ........................... ............................................. 20
3.15 BACKGROUND MUSIC AND MUSIC ON HOLD ....................................................... 20
3.16 HEADSET INSTALLATION ................................................................................ ....... 21
3.17 BATTERY BACK- UP INSTALLATION ....................................................................... 21
3.18 MEMORY BACK- UP SWITCH ................................................................................... 22
SECTION 4. FEATUR E DESCRIPTION
4.1 NUMBERING PLAN ..................................................................................................
Numbering Plan for GHX -308A ......................................................................................
Numbering Plan for GHX -616 ........................................................................................
Access Authorization Code (Password) .............................................................................
Account Cod e ...................................................................................................................
Alarm ....................................................................................................................... ........ .
Attendant ................................................................................................................... ........
Attendant Disable Outgoing CO Line Access ..........................................................
Attendan t Override .................................................................................................
Attendant Recall .....................................................................................................
Attendant Station Ass ignment .................................................................................
Automatic Pause Insertion with Speed Dial .........................................................................
Automatic Privacy .............................. .................................................................................
Automatic Selection ......................................................................................................... ...
Auto FAX Transfer ........................ .......................................................................................
Background Music ............................................................................................................ ...
Call Back ........................... ..................................................................................................
Call Forward ................................................................................................................ ........

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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Call Park ............ ..................................................................................................................
Call Transfer ............................................................................................................... .........
Call Wait ........................................................................................................................ ......
CO Line Access ............................................................................................................ .......
CO Ring Assignment .......................................................................................................... ..
CO Ring Detect ........................................................................................................ ............
Conference .................................................................................................................. ........
Dial Sending ................................................................................................ ........................
Dialing Privileges (Class of Service) .......... ..........................................................................
Differential Ring Frequency Selection .................................................................... ................
DISA (Direct Inward System Access)......................................................................................
Do Not Disturb (DND) ................................................................................................ ............
Door Open Control ........................................................................................................... .....
DSS/DLS Box ................................................................................................... .....................
Emergency Transfer .......................................................................................................... ....
Executive/Secretary Transfer .......................................................................... .......................
Flash ....................................................................................................................... ..............
Flash with Speed Dial .................................................................... ........................................
Flexible Button Assignment .................................................................................................. ..
Flexible Station Number ............................................................ .............................................
Help ........................................................................................................................ ...............
Hold ............................................................... .....................................................................
Hot Line .................................................................................................................... ..........
Hunt Groups .................................... ....................................................................................
Intercom Signaling Select ................................................................................................... ...
Intercom Signaling Change .............. ......................................................................................
Intercom HOLD ............................................................................................................... ......
Intercom Transfer ................. .................................................................................................
Loop Button ................................................................................................................. .........
Loud Bell Control ... ...............................................................................................................
Message Display ............................................................................................................. .....
Custom Mess ages ...............................................................................................................
Pre - selected Messages . .......................................................................................................
Message Wait ......................................................................................................................
Monitor Mode (Group Listening) .............................................................................................
Musi c on Hold ................................................................................................................... ...
Mute ........................................................................................................................ ...........
Name Display ................................................................................................................ .......
Night Transfer ............................................................................................ ..........................
On - Hook Dialing ................................................................................................................ ...
Override ...................................................................................... ........................................
Page ........................................................................................................................ ...........
Paging .. ............................................................................................................................
Page Access Restriction ...................................................................................................
Meet Me Page ..................................................................................................................
Pause Timer ................................................................................................................. ........
PBX Dial Codes ................................................ ....................................................................
Phone Box ................................................................................................................... ........
Pickup ............................................ .....................................................................................
Directed Call Pickup ..........................................................................................................
Group Call Pickup .............................................................................................................
Branch Group ...................................................................................................................
Pool Button (CO Group Button) ....... .......................................................................................
Queuing ..................................................................................................................... .........
Queue Request ..................................................................................................................
Queue Recall .....................................................................................................................
Queue Cancel ....................................................................................................................
Redial ...................................................................................................................... ........... ..

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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Ringin g Line Preference ........................................................................................................
Speed Dial .................................................................................................................. .........
Station Speed Dial ............................................................................................................
System Speed Dial ...........................................................................................................
Time Display ............................................................................................................... .......
Universal Night Answer (UNA) ........................................................................................ ......
Version Display ............................................................................................................. .......
3 Minute Warning ................................................................................................ .................
SECTION 5. SYSTEM PROGRAMMING
5.1 PROGRAM CODES LIST FOR GHX- 308A........................................................................
5.2 PROGRAM CODES LIST FOR GHX- 616.......................................................... ................
5.3 PROGRAM MODE ENTRY ..............................................................................................
5.4 INITIALIZATION .................................................................................................. .............
5.5 SYSTEM PARAMETER PROGRAMMING ........................................................................
System Hold Recall Timer (FLASH 01) ..............................................................................
Exclusive Hold R ecall Timer (FLASH 02) ...........................................................................
Transfer Recall Timer (FLASH 03) .....................................................................................
Preset Forward Timer (FLASH 04) . .....................................................................................
Pause Timer (FLASH 05) ....................................................................................................
Call Park Recall Timer (FLASH 06) ........ .............................................................................
Conference Timer (FLASH 07) ............................................................................................
Message Wait Reminder Tone Timer (FLASH 08) ......... ......................................................
CO Ring Detect Timer (FLASH 10) ......................................................................................
Hold Preference (FLASH 11) ................................................... ............................................
Automatic Privacy (FLASH 12) ............................................................................................
Attendant Call Code (0) (FLASH 13) .................................................. ..................................
Incoming CO Toll Restriction (FLASH 14) .........................................................................
Attendant Station Assignment (FLASH 15) .............................................................. ............
Loud Bell Control (FLASH 16) ..............................................................................................
PBX Access Codes (FLASH 17) ....................................................................................... ...
Executive/Secretary Transfer (FLASH 18) ...........................................................................
Hunt Group (FLASH 19) ......................................................................................................
SMDR ( FLASH 20, GHX - 616).................................................................................................
Alarm Detect & Signaling (FLASH 21, GHX - 616).....................................................................
PBX Calling Signal (FLASH 21, GHX - 308A) .........................................................................
Page Warning Tone (FLASH 22) ..........................................................................................
Program Control Relay (FLASH 23) .......... ...........................................................................
Phone Box Call Timer (FLASH 25) .......................................................................................
Setting Time and Date (FLASH 28) ..................... ..................................................................
Group Listening (FLASH 29) ................................................................................................
CO Line Programming (FLASH 30) .............................. .........................................................
Hook Flash Timer (FLASH 31) .............................................................................................
Attendant Recall Timer (FLASH 33) ..................................... .................................................
Incoming CO Ring Assignment to Hunt Group (FLASH 34, GHX- 616 ) ................................
Ring Type Selection (FLASH 35) ............................................................................ ..............
Flexible Station Numbering (FLASH 36) .................................................................................
Method of Seizing CO Line (FLASH 37) ............................................................................... ..
Multi -Line Conference (FLASH 39) ........................................................................................
Station Programming - (I) (FLASH 40) ...................................................................................
Off -net Forward CO to CO (FLASH 41, GHX- 616).....................................................................
Call Metering Unit (FLASH 42,GHX- 616)...................................................................................
Pre - selec ted Message Selection (FLASH 43, GHX- 616)............................................................
Call Forward No Answer Timer (FLASH 44, GHX- 616)..............................................................
Prevent Illegal Dial (FLASH 45) ... ............................................................................................
CO Dial Wait Timer (FLASH 46) ...........................................................................................
Exception Tables Programming (FLASH 5 0) ..............................................................................

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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Music Source Control (FLASH 51)............................................................................................
Station Programming - (II) (FLASH 52) .... ..............................................................................
Hot Line (FLASH 53) ........................................................................................................ .. ...
Door Open Timer (FLASH 54) ............... .................................................................................
VAU Mode Program (FLASH 55, GHX- 616) .........................................................................
CO Dial Delay Timer (FLASH 56) .............................. ............................................................
Hot Line Timer (FLASH 57) ...................................................................................................
VAU Segment Control (FLASH 58,GHX- 616)...................... ...................................................
VAU Channel Control (FLASH 59, GHX- 616).........................................................................
Initialization (FLASH 60- 65) ....................................................... ...........................................
Initialize System Parameter (FLASH 60)................................................................................
Initialize CO Line Attribute (FLASH 61) ......................................... ...........................................
Initialize Station Attribute (FLASH 62) ..................................................................................... .
Initialize Exception Tables (FLASH 63) .................................... .................................................
Initialize System Speed Dial (FLASH 64) ..................................................................................
Initialize All Database (FLASH 65) ...................................... ......................................................
Print All Database (FLASH 70, GHX- 616) ..............................................................................
Print System Parameters (FLASH 71, GHX- 616) ........................... .........................................
Print CO Line Attributes (FLASH 72, GHX- 616) ......................................................................
Print Station Attributes (FLASH 73, GHX- 616) ......................................... ...............................
Print Exception Tables (FLASH 74, GHX- 616) ........................................................................
Print System Speed Numbers (FLASH 75, GHX- 616) ................................................. ............
Fax CO, Station Assignment (FLASH 76, GHX- 308A) ...........................................................
UCD Member First Choice (FLASH 76, GHX- 616) .................................................................
Fax Tone Dete ct Timer (FLASH 77, GHX- 308A) ...................................................................
DISA, with Hunt Group (FLASH 77, GHX- 616) ......................................................................
Fax CO Call Timer (FLASH 78, GHX- 308A) ..........................................................................
DISA Night Act (FLASH 78, GHX- 616 ) .................................................................................
SLT Ring Off Time (FLASH 79, GHX- 308A) ... .......................................................................
DISA Busy /No/Error Destination (FLASH 79, GHX - 616).......................................................... .
VAU Tone Cadence (FLASH 83, GHX- 616) ...................... .....................................................
VAU Tone Time (FLASH 84, GHX- 616) .................................................................................
DISA Message Replay (FLASH 85, GHX - 616) ................................... .......................................
Fax CO, Station Assignment (FLASH 86, GHX- 616)................................................................
Fax Tone Detect Timer (FLASH 87, GHX- 616).................................................. ......................
Fax CO Call Timer (FLASH 88, GHX- 616) .............................................................................
SLT Ring Off Time (FLASH 89, GHX- 616) ................................................................. ............

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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SECTION 1. INTRODUCTION
1.1 PURPOSE
This manual provides the information necessary to configure, install, operate and maintain the GHX-308A Hybrid Key
Telephone System.
1.2 REGULATORY INFORMATION
A. TELCO NOTIF ICATION
Before connecting the GHX-308A Hybrid Key Telephone System to the telephone network, the local serving
telephone company must be given advance notice of intention to use customer provided equipment(CPE) and
provided with the information of the tel ephone numbers to be connected to the system.
B. INCIDENCE OF HARM
If the telephone company determines that the customer provided equipment(CPE) is faulty and possibly causing
harm or interruption to the telephone network, it should be disconnected until repair can be effected. If this is not
done, the telephone company may temporarily disconnected service.
C. CHANGES IN SERVICE
The local serving telephone company may make change in communications facilities or procedures. If these
changes should affect the use of GHX-308A or compatibility with the network, the serving telephone company must
give written notice to the user to allow uninterrupted service.
D. MAINTENANCE LIMITATION
Maintenance on the GHX-308A Hybrid Key Telephone System is performed only by the manufacturer or its
authorized agent. The user may not make any changes and/or repairs except as specifically noted in the manual. If
unauthorized alterations or repairs are performed, any remaining warranty may be voided.
E. NOTICE OF COMPLI ANCE
The GHX-308A Hybrid Key Telephone is designed to comply with rules regarding radiation and radio frequency
emission by class A computing devices. In accordance with FCC Standard 15(Subpart J), the following information
must be supplied to the end use r:
“ 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 limits for a Class A computing device, pursuant to Subpart J or Part
15 or the FCC Rules, which are designed to provide reasonable protection against such interference, when operated
in a commercial environment.
Operation of this equipment in residential area could cause in terference, in which case the user, at his own expense,
will be required to take whatever measures may be required to correct the interference.”
F. HEARING AID COMPATIBILITY
The GHX-308A Hybrid Key Telephone is Hearing Aid Compatible, as defined in Section 68.316 of Part 68 FCC
Rules.

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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SECTION 2. GENERAL DESCRIPTION
2.1 INTRODUCTION
The GHX-308A Hybrid Key Telephone System is designed to meet the telecommunication needs of small size business
using maximum 3 CO lines & 8 extensions.
The system is a flat pack system equipped with basic 3 CO lines and 8 extensions (KTU : 1, Hybrid : 3, SLT : 4).
2.2 SYSTEM DESCRIPTION
The GHX-308A Hybrid Key Telephone System is microprocessor controlled, solid state electoric switching system. All
controls, switching and interface circuitry are condensed onto a single printed circuit board(PCB) located inside the key
service unit(KSU). The system can support both key telephone and single line telephone of DTMF and dial pulse type.
Switc hing is accomplished through a solid state crosspoint matrix that provides voice path connections for 3 Central
Office lines, 1 Key Telephone, 3 Hybrids (Key telephone or SLT), and 4 SLTs.
There are two(2) external control contact ports that can be flexibly assigned to use loud bell control, external paging
control, door open control and music on hold control.
The system also provides a battery backup interface circuit and a connector that allows customer provided external
battery to be connected with the system, with this facility the system can execute its normal operation during commercial
power failure.

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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The GHX-308A contains all system memories, which composed of 128Kbyte of ROM and 32Kbyte of RAM. The RAM is
subdivided so that part is used as CPU working area and part is used for customer database. The customer database
memory is protected from loss by a long-life lithium battery. The system generic memory(ROM) is mounted in the IC
socket on the MBU. This allows easy access for removal of system softw are when upgrading software feature package.
2.3 SYSTEM CAPACITY
A. CONFIGURATION FOR OUTSIDE AND INTERNAL LINES
Description System Capacity Max. Capacity
CO/PABX 3 3 Lines
Key Telephone 1 2 3 4 8 Lines
Single Line Telephone 7 6 5 4
B. OTHE R SYSTEM SOURCES
4 Intercom channels
1 Music source input
2 Free relay contacts
2 Power failure transfer ports
2.4 SYSTEM SPECIFICATION
A. ELECTRICAL SPECIFICATIONS
AC Input
Power Consumption
Output Voltage
Station Cable Lengths (Maximum)
(Twis ted 2 pair)
110 or 220 VAC ± 10%, 50~60Hz
60Watts
28V DC ± 10%, 1.6A
150m. of 26AWG Cable
300m. of 24AWG Cable
450m. of 22AWG Cable
Fuse - AC Input 110V : T500mA/250V
220V : T315mA/250V
Music Source (Input) 600 Ohms at 0 dBm
Contact R ating
External Page Control
Loud Bell Control
1.0A, 24VDC
1.0A, 24VDC
External Page Port
Output Impedance
Output Power
600 Ohms at 0dBm
1mW maximum
B. ENVIRONMENTAL SPECIFICATIONS
Operation Temperature
Recommended Temperature
0~50 ?
20~26 ?
Humidit y 5- 85 % (non - condensing)
C. DIALING SPECIFICATIONS

GHX -308A/616
HYBRID KEY TELEPHONE SYSTEM
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DTMF DIALING
Frequency Deviation
Rise Time
Duration of DTMF Signal
Interdigit Time
less than ± 1%
3 msec.
100 msec. minimum
100 msec. minimum
DIALING MEMORY
System Speed Dialing
Station Speed Dialin g
80 numbers (24 digits)
20 numbers per station (24 digits)
OUTSIDE LINE TYPE
Loop start
D. DIMENSIONS AND WEIGHTS
BASIC KEY SERVICE UNIT
Height
Width
Depth
Weight
37.5cm (14.7 inches)
27.2cm (10.8 inches)
6.7cm (2.6 inches)
KEY TELEPHONE (GSX - 33 EXE)
Height
Width
Depth
Weight
22cm (8.75 inches)
22cm (8.85 inches)
7cm (2.75 inches)
1.6Kg (4.4 lbs)
PHONE BOX (GSX - PHONE BOX)
Height
Width
Depth
Weight
4.5cm (1.75 inches)
14cm (5.5 inches)
10cm (4 inches)
0.5Kg (1 lbs)
2.5 EQUIPMENT DESCRIPT ION
A. KEY SERVICE UNIT (KSU)
The KSU is a self-contained unit that contains the power supply, processor, external connectors and circuits for 4
CO lines and 8 extension lines. External connections use screw terminal connections. The KSU, is a metal fra me
cabinet for wall mounting. The KSU contains Main Board Unit(MBU) and power transformer.
The MBU contains;
- Micro Processor & Control Circuitry
- 3 CO(outside) lines
- 1 Analogue Keyset Interface
- 3 Hybrid (Keyset or SLT) Interfaces
- 4 Single Line Telephone(SLT) Interfaces
- 1 Real Time Clock
- 1 Internal Music Source
- 1 DTMF Generator
- 2 DTMF Receivers
- 2 Emergency Transfer Ports
- 1 Ring Generator
- 1 External Control Contact Relay
B. MULTI FUNCTION UNIT ( MFU) : Option
The MFU can be installed optionally on the MBU. The MFU contains :