GOLDSTAR GSX408/816


INTRODUCTION

The GSX-408/816 Key Telephone System is designed to meet the telecommunications needs of small to medium sized businesses.

The Key Service Unit (KSU) is a wall mountable unit that contains Key Service Board, Power Supply, Battery Backup Unit, Real Time Clock Unit and pre-wired connectors for station and CO line interfaces.

The GSX-408/816 is a flat pack system equipped with 4 CO lines and 8 Stations.  It can be easily expanded to 8 CO lines and 16 stations with a modular PCB mounted in the KSU.

Crane Telecommunications are the sole importer of these systems into the UK.  Goldstar UK have nothing to do with them what so ever.  Installation manuals are scarce due the fact Crane Telecommunications operated maintenance contracts on the systems and were reluctant to let the owners carry out their own re-programming.  If the system is second-hand you will have trouble getting any support for it at all.

Y2K Compliant.

TECHNOLOGY

The GSX-408/816 Key Telephone system is a microprocessor controlled, solid state electronic switching system which distributes communications in a non-blocking format.  All control, switching interface circuitry is condensed onto a single printed circuit board (PCB) located inside the key service unit.

Switching is accomplished through a solid state crosspoint matrix that provides voice path connections for 4 (8) central offices lines, 8 (16) key telephones and 8 intercom paths.

The CO interfaces are equipped with transformer barriers for system classification as an FCC fully protected system.  Each CO circuit supports rotary or DTMF dialing under software control.  The DTMF tones and system supervisory tones are generated in each keyset.

The central microprocessor is a Z-80 and controls the crosspoints and central office relays. It also controls communications between slave microprocessor located in each GSX key telephone.

The 408/816 contains all system memory, which is composed of 96K of Read Only Memory (ROM) and 16K of Random Access Memory (RAM).  The RAM is sub-divided so that part is used for customer database.  A long life lithium battery protects the customer database memory.  The system general memory (ROM) is contained in a Program Module (PM) that is interfaced to the KSU through a modular connecting arrangement.  This allows easy access for removal of system software when upgrading software feature packages.

Each key telephone contains a microprocessor and circuitry to monitor button activity and control lamp conditions. A built-in speaker permits voice or tone calling to the station.  Every telephone has a flexible button field, which can be individually programmed for 1 to 6 functions.

The key telephone sets are equipped with 9 fixed function buttons and either 12 or 24 flexible buttons which can be programmed by individual users, 2 volume controls an intercom mode selection switch and integrated speaker.

For emergency applications, a stand-alone battery assembly may be connected to the battery-input terminals on the KSU.  This retains system power in the event of commercial power failure.

 

SYSTEM CAPACITY

8 CO (Outside) Lines
8 Intercom Channels
16 Key Telephone Stations
1 External Music Source Input
1 External Paging port
2  Loud Bell Controls
1 Alarm Input (NOT BURGLAR ALARMS!)
1 24V DC Battery Connector
OPTIONAL
1 RS232C Port for SMDR

 

EQUIPMENT DESCRIPTION

KEY SERVICE UNIT
The KSU is a self-contained unit that contains the power supply, processor, external connectors and circuits for 4 CO lines and 8 stations.  External connections use 50way Telco connectors.  A plug in module provides system-operating data in standard and advanced feature package.  The system is provided with a real time clock to provide executive telephones with LCD, to have time and date displayed, and a battery to keep clock accurate in case of commercial power failure.  This unit also provides SMDR to track date and time.

KEY TELEPHONE
The 4-button telephone comes with 4 fixed feature buttons. 1 volume control and message waiting lamp.

The 8 button has the same size wit 4-button telephone but comes with 2 fixed feature buttons, 6 programmable buttons, 1 volume control and message waiting lamp.

The 21-button telephone comes in 2 models, Enhanced and Executive.  Both models come with 9 fixed feature buttons, 12 programmable buttons, speakerphone, 2 volume controls, and intercom mode selection switch.  In addition, the Executive model comes with a 2-line, 48-character LCD display.

The 33 button is similar to the 21-button but comes with 24 programmable buttons.  Is also available in enhanced and executive style.

4 Button Key Telephone 21 Button Key Telephone

PHONE BOX
The unit is basically a wall-mounted unit that is used for door-opening facilities.  The system can handle a maximum of 8 of these units.

SINGLE LINE ADAPTOR
This unit (shown pictured to the right) is for converting connection that would be intended for a key telephone and convert the signals so that a normal POTS telephone can attached to the system i.e. modem, answer phone etc. etc.

 

DIMENSIONS AND WEIGHT

KEY SERVICE UNIT
Height    419mm
Width     298mm
Depth     76mm
Weight   8KG

KEY TELEPHONE
Height    222mm
Width     222mm
Depth     70mm
Weight   1.5KG

PHONE BOX
Height    44mm
Width     140mm
Depth     102mm
Weight   0.5KG

EXPANSION MODULE
Height    279mm
Width     140mm
Depth     25mm
Weight   0.8KG

NUMBERING PLAN

100-115 Station Numbers
250-255  Call Park locations
260-267  Hunt Group Pilot Numbers
281          (ATND) WAKEUP Registration-effective until cancel
282          (ATND)  WAKEUP Registration-one time only
283          (ATND) WAKEUP Cancel
284          (ATND)  PASSWORD Erase
285          (ATND)  LCD Format-ddmmyy/mmddyy (toggle)
286          (ATND) LCD Format-am-pm/24 hour (toggle)
299          (ATND)  Clock
3 Camp On (Call Wait)

 

WIRING CONNECTION

CO LINES
The CO Lines are connected to the RHS of the KSU on a 50 Way Telco connector.

PAIR

CO Line

COLOURS

1

1

BLUE / WHITE

2

2

ORANGE/WHITE

3

3

GREEN/WHITE

4

4

BROWN/WHITE

5

5

GREY/WHITE

6

6

BLUE/RED

7

7

ORANGE/RED

8

8

GREEN/RED

PAIR

CO POWER FAIL

COLOURS

21

1

BLUE/PURPLE

22

2

ORANGE/PURPLE

23

3

GREEN/PURPLE

24

4

ORANGE/PURPLE

Pairs 21-24 provide CO lines 1-4 back out of the system if there is a power failure.  They will not show current if the system is powered up.

STATION WIRING
Normally when the systems are installed for the first time, the supplier will have connected the pairs to KRONE IDC strips.  Extension 100 will be on the first 2 pairs of the loom (Blue/White and Orange/White). The rest of the extensions will follow on until Extension 107, for extension 108 to 115 the loom cable will be the same as before but just plug it into the connector on the KSU for that extension range.  For the wiring of cables to a PSTN socket for extension 100, it is like so: -

WHITE/BLUE  - PSTN OUTLET PIN #4
BLUE/WHITE - PSTN OUTLET PIN #3
WHITE/ORANGE - PSTN OUTLET PIN #5
ORANGE/WHITE - PSTN OUTLET PIN #2

You will need to have a lot creative license to finally get all the rest of the stations wired up but it is fairly easy if you follow the standard that is used for extension 100.

Do not use PSTN Master sockets as they make the KSU/KEY Phone appear to be faulty when it isnít only use secondary sockets.

If you wire the socket up incorrectly you may get no response or possibly a full LCD screen test combined with interference sounds emitted from the speaker, then all goes dead on the handset

MUSIC ON HOLD / EXTERNAL PAGING
The connections on the side of the KSU for these inputs and outputs are fairly well UN-DOCUMENTED!  On the wiring loom for the extensions, pair 17 (ORANGE/YELLOW) are for connection of a of music device e.g. CD-Player, Radio etc. etc.  Pair 18 is for connection to an external P.A system.

PROGRAMMING

To enter program mode dial *7764 from station 100.  When programming it advisable to use an executive 21//33 key telephone.  Programming can be achieved by using an enhanced but the LCD gives on-screen guidance.

To enter the programming menus press the recall button followed by the 2-digit program code.

Some menus appear twice but when they are entered into, they actually adjust different parameters even though they look the same.

 

PROGRAMMING CODES

This section provides all the programming codes for the system.  Some codes have sub menus so be thorough.

 

Key

Use

 

Key

Use

 

1

System Hold Re-Call

 

21

 

 

2

Exclusive Hold Re-Call

 

22

Pulse Dialing Parameters

 

3

Transfer Re-Call

 

23

 

 

4

Preset Forward Timer

 

24

 

 

5

Pause Timer

 

25

ICM Box Timer ( Door Phone)

6

Call Park Timer

 

26

 

 

7

 

 

27

Background Music Channel

 

8

Message Waiting Tone Timer

28

Date & Time

 

9

Paging Time Out

 

29

Monitor Mode

 

10

CO Ring Detect

 

30

CO Line Attributes

 

11

Hold Preference

 

31

 

 

12

 

 

32

 

 

13

Ext Night Ring

 

33

Attendant Re-Call

 

14

 

 

34

 

 

15

Attendant Station Assignment

35

 

 

16

Loud Bell Assignment

 

36

 

 

17

PBX Dial Codes

 

37

 

 

18

Executive Secretary Pairings

38

 

 

19

Hunt Groups

 

39

Multi Line Conferencing

 

20

SMDR Parameters

 

40

Station Attributes

 

 

Key

Use

 

Key

Use

41

 

 

61

Initialize CO Lines

42

 

 

62

Initialize Stations

43

 

 

63

Initialize Exclusion Tables

44

 

 

64

Initialize System Speed Numbers

45

 

 

65

 

46

 

 

66

 

47

 

 

67

 

48

SMDR Timer

 

68

 

49

SMDR Long Distance Codes

 

69

 

50

Exception Tables

 

70

Print System Data

51

New Tel. No Plan

 

71

Print System Parameters

52

Station Attributes

 

72

Print CO Lines

53

 

 

73

Print Stations

54

 

 

74

Print EX Tables

55

 

 

75

Print System Speed No

56

CO Delay Timer

 

76

Print Least Cost Routing

57

 

 

77

Print New STD Tables

58

 

 

78

 

59

 

 

79

 

60

Initialize System Parameters

 

80

 

 

Key

Use

81

Least Cost Routing Enable

82

Inhibit BT Access

83

LCR Access Codes

84

LCR Authorization Codes

85

LCR Dial Tone Detect Timer

86

LCR Lookup Table

87

New Mercury STD Table

88

MCL Extension Billing

89

Disable 30 Sec

90

 

91

Paging Timeout

92

 

93

Monitor Mode

94

 

95

SMDR Long distance Codes

96

 

97

 

98

 

99

Disable 30 Sec

100

 


Wiring Diagram showing all connector uses published to date

 

Extension 100 -107 Loom

 

 

 

 

Extension 108 -115 Loom

 

 

 

 

CO Line Loom

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pair

Colour

PIN

Use

 

Pair

Colour

PIN

Use

 

Pair

Colour

Use

1

White/Blue

4

 

 

1

White/Blue

4

 

 

1

White/Blue

CO 1

1

Blue/White

3

Ext

 

1

Blue/White

3

Ext

 

1

Blue/White

 

2

White/Orange

5

100

 

2

White/Orange

5

108

 

2

White/Orange

CO 2

2

Orange/White

2

 

 

2

Orange/White

2

 

 

2

Orange/White

 

3

White/Green

4

 

 

3

White/Green

4

 

 

3

White/Green

CO 3

3

Green/White

3

Ext

 

3

Green/White

3

Ext

 

3

Green/White

 

4

White/Brown

5

101

 

4

White/Brown

5

109

 

4

White/Brown

CO 4

4

Brown/White

2

 

 

4

Brown/White

2

 

 

4

Brown/White

 

5

White/Grey

4

 

 

5

White/Grey

4

 

 

5

White/Grey

CO 5

5

Grey/White

3

Ext

 

5

Grey/White

3

Ext

 

5

Grey/White

 

6

Red/Blue

5

102

 

6

Red/Blue

5

110

 

6

Red/Blue

 

6

Blue/Red

2

 

 

6

Blue/Red

2

 

 

6

Blue/Red

CO6

7

Red/Orange

4

 

 

7

Red/Orange

4

 

 

7

Red/Orange

 

7

Orange/Red

3

Ext

 

7

Orange/Red

3

Ext

 

7

Orange/Red

 

8

Red/Green

5

103

 

8

Red/Green

5

111

 

8

Red/Green

CO 7

8

Green/Red

2

 

 

8

Green/Red

2

 

 

8

Green/Red

 

9

Red/Brown

4

 

 

9

Red/Brown

4

 

 

9

Red/Brown

CO 8

9

Brown/Red

3

Ext

 

9

Brown/Red

3

Ext

 

9

Brown/Red

 

10

Red/Grey

5

104

 

10

Red/Grey

5

112

 

10

Red/Grey

N/A

10

Grey/Red

2

 

 

10

Grey/Red

2

 

 

10

Grey/Red

N/A

11

Black/Blue

4

 

 

11

Black/Blue

4

 

 

11

Black/Blue

N/A

11

Blue/Black

3

Ext

 

11

Blue/Black

3

Ext

 

11

Blue/Black

N/A

12

Black/Orange

5

105

 

12

Black/Orange

5

113

 

12

Black/Orange

N/A

12

Orange/Black

2

 

 

12

Orange/Black

2

 

 

12

Orange/Black

N/A

13

Black/Green

4

 

 

13

Black/Green

4

 

 

13

Black/Green

N/A

13

Green/Black

3

Ext

 

13

Green/Black

3

Ext

 

13

Green/Black

N/A

14

Black/Brown

5

106

 

14

Black/Brown

5

114

 

14

Black/Brown

N/A

14

Brown/Black

2

 

 

14

Brown/Black

2

 

 

14

Brown/Black

N/A

15

Black/Grey

4

 

 

15

Black/Grey

4

 

 

15

Black/Grey

N/A

15

Grey/Black

3

Ext

 

15

Grey/Black

3

Ext

 

15

Grey/Black

N/A

16

Yellow/Blue

5

107

 

16

Yellow/Blue

5

115

 

16

Yellow/Blue

N/A

16

Blue/Yellow

2

 

 

16

Blue/Yellow

2

 

 

16

Blue/Yellow

N/A

17

Yellow/Orange

 

Music

 

17

Yellow/Orange

 

N/A

 

17

Yellow/Orange

N/A

17

Orange/Yellow

 

On-Hold

 

17

Orange/Yellow

 

N/A

 

17

Orange/Yellow

N/A

18

Yellow/Green

 

External

 

18

Yellow/Green

 

N/A

 

18

Yellow/Green

N/A

18

Green/Yellow

 

Paging

 

18

Green/Yellow

 

N/A

 

18

Green/Yellow

N/A

19

Yellow/Brown

 

N/A

 

19

Yellow/Brown

 

N/A

 

19

Yellow/Brown

N/A

19

Brown/Yellow

 

N/A

 

19

Brown/Yellow

 

N/A

 

19

Brown/Yellow

N/A

20

Yellow/Grey

 

N/A

 

20

Yellow/Grey

 

N/A

 

20

Yellow/Grey

N/A

20

Grey/Yellow

 

N/A

 

20

Grey/Yellow

 

N/A

 

20

Grey/Yellow

N/A

21

Purple/Blue

 

N/A

 

21

Purple/Blue

 

N/A

 

21

Purple/Blue

CO 1

21

Blue/Purple

 

N/A

 

21

Blue/Purple

 

N/A

 

21

Blue/Purple

Power Fail

22

Purple/Orange

 

N/A

 

22

Purple/Orange

 

N/A

 

22

Purple/Orange

CO 2

22

Orange/Purple

 

N/A

 

22

Orange/Purple

 

N/A

 

22

Orange/Purple

Power Fail

23

Purple/Green

 

N/A

 

23

Purple/Green

 

N/A

 

23

Purple/Green

CO 3

23

Green/Purple

 

N/A

 

23

Green/Purple

 

N/A

 

23

Green/Purple

Power Fail

24

Purple/Brown

 

N/A

 

24

Purple/Brown

 

N/A

 

24

Purple/Brown

CO 4

24

Brown/Purple

 

N/A

 

24

Brown/Purple

 

N/A

 

24

Brown/Purple

Power Fail

25

Purple/Grey

 

N/A

 

25

Purple/Grey

 

N/A

 

25

Purple/Grey

N/A

25

Grey/Purple

 

N/A

 

25

Grey/Purple

 

N/A

 

25

Grey/Purple

N/A

 

Installation of extra lines
When configuring extra lines, the system has to be told that extra lines exist ( program code 30).  Then the function buttons on the keyphones need to be reassigned (program code 40, second command page).

 

Thanks to Nick Davies for this page

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Last revised: 21 March, 2002