Ericsson LBI-39076B system manual GTI Telephone Interface, Revision-A Main Board, F2&F3, Out

Page 18

LBI-39076B

INSTALLATION

6. GTI TELEPHONE INTERFACE

The 6th step to install the ELI option is to configure each GTI telephone interface to match the type of telephone circuit to be connected to it. The first Main boards, identified by the manufacturer’s number 702-9588A, are configured differently than the later Main boards, identified by the manufacturer’s number 702-9588D or E. The boards are referred to as revision-A Main boards and revision-D or E Main boards respectively.

NOTE

Revision A Main boards do not support Direct Inward Dial (DID) telephone lines. If you need to have a DID telephone line connected to a GTI unit, that GTI unit must contain a revision-D or later Main board.

Be careful of terms when talking or reading about the telephone circuit that the GTI unit is to interface. Terms such as send, receive, in, out, E-Lead, and M-Lead are sometimes defined differently by different people and from different points of reference. The terms used in this manual are defined as follows:

4-Wire Send - audio voice signals from GTI unit to telephone circuit.

4-Wire Rec - audio voice signals from telephone circuit to GTI unit.

M-Lead - telephone circuit supervision signal from GTI unit to telephone circuit.

E-Lead - telephone circuit supervision signal from telephone circuit to GTI unit.

Revision-A Main Board

The revision-A Main board uses 15 jumpers (JP1 through JP15) and two fuses (F2 and F3) to configure the telephone interface. Set the jumpers and fuses to match the type of circuit to be connected to it. Figure 18 shows the locations of these jumpers and fuses on the revision-A Main board, and Table 2 lists the jumper and fuse configurations for four common types of telephone circuits. Figure 19 through Figure 22 show simplified schematics of these four configurations.

Many other configurations of the GTI telephone interface are possible. Table 3 shows which jumpers and fuses to use to obtain each specific interface characteristic. Figure 23 shows a simplified schematic of the interface, including key components and the location of each jumper and fuse. If a jumper or fuse is not specifically required for a characteristic, remove it. Not all characteristics are compatible with each other. For example, the interface cannot be configured for a -48 V reference for the E-Lead and at the same time be configured for an external reference for the M-Lead.

 

 

 

 

 

 

RJ-45

 

 

 

 

 

 

 

 

 

Telephone Line

 

 

 

 

 

 

 

 

Connector

 

 

 

JP4

 

 

D

 

 

C

 

C

 

C

JP5

 

 

 

M

 

M

 

 

JP1

C

F

B

D

D

B

B

D

JP6

 

B

E

 

A

 

A

A

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

JP2

 

JP3

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

C

JP8

 

 

JP7

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JP9

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

JP11

 

 

 

 

 

 

 

 

 

JP10

 

 

 

 

 

 

 

 

 

 

JP12

JP13

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

JP14

JP15

 

 

 

 

 

 

F2

 

F3

B

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

A

 

 

 

 

 

 

 

 

 

Figure 18 - Jumper Locations (Rev A Main Board)

Table 2 - Configurations by Line Type (Rev A Main Board)

TELEPHONE

 

JUMPER POSITIONS FOR JP1 THROUGH JP15

 

 

 

FUSES

LINE TYPE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

F2&F3

End-to-End Loop Start

-

B

B

-

-

-

-

 

A

B

-

-

-

A

A

A

OUT

End-to-End Ground Start

D+M

B

B

-

-

-

-

 

B

A

-

-

B

A

A

A

IN

4-Wire E&M, Microwave

E

A+C

A+C

IN

IN

 

C+M

-

-

-

IN

IN

A

-

B

B

OUT

4-Wire E&M, Type I

E

A+C

A+C

-

-

 

C+M

-

-

-

IN

IN

B

-

B

B

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

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Contents System Manual Revision History Revision Date Reason for ChangeTable of Contents Table of Contents Figures List of Figures and TablesFigures and Tables Regulatory Compliance DOC Registration DOC Compliance NoticeDOC Avis DE Conformation Specifications SpecificationsMastr Introduction / Description OverviewDescription GTI UnitsGTI Interface Board Description / InstallationGTI Configurator Software IAMGTI InstallationMDR GetcSite Controller Software Radio SoftwareSite Controller Hardware EmptyRadio Channel Assignments Application Software PROMsPersonality PROMs GTI Software Main BoardRevision-A Main boards Revision-D or E Main boards Processor BoardInterface Board F2&F3 GTI Telephone InterfaceRevision-A Main Board OUTWire E&M, Microwave Wire E&M, TypeEnd-to-End, Loop Start End-to-End, Ground Start Jumper Positions for JP1 Through JP15 Fuses External JP4 Lead Fuse F2 Reference DS1 GTI DIP Switch Settings Revision-D or E Main BoardDid GTI Interface Board Mounting GTI & IAM Mounting GTI ConnectionsTelephone Line Mastr III Power Supply/Audio Mastr II or IIe Power Supply/AudioPCM/Data Bus IAM Software Site Controller ComputerIAM Connections Power SupplyAlarm Outputs Printer RS-232 PortIAM DIP Switch Settings Getc ModificationInterconnect Timing Parameters ConfigurationSite Controller Database Operation without System ManagerOperation with System Manager General Limits for SiteWho Can Receive Calls Who Has What Priority Who Has What Toll Call RestrictionsRecommendation GTI DatabaseRemote Data Link RTS CTSOperation Low-Battery Indicator CDR Received IndicatorAlarm Indicator Printer IndicatorStatus BackupInterconnect Calls OverviewTelephone-Originated Call Detecting the CallAnswering the Call Identifying Called ID Obtaining Working ChannelEnding the Call Radio-Originated CallObtaining a Working Channel Interconnect Digits RE-DIALED DigitsOverdialed Digits Mastr II or IIe Repeaters MaintenanceGTI Removal Mastr III RepeatersELI Software Upgrades GTI DSPSoftware Version Required for Main Board Revision Number Plan a All at One TimePlan B Half at a Time Maintenance Plan C One at a Time Maintenance IAM Unit Troubleshooting No interconnect or radio-to-radioInterconnect Rotary Definition for Set the Max # Concurrent InterconAll telephone-originated interconnect Toll Call Parameters screen LBI-39076B Glossary GlossaryPresence of a DC loop current between one of the two wires Glossary / Parts List Parts ListInterconnection Diagram EdacsSchematic Diagram Installation Checklist Installation Checklist