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363-753-143-01, Revision 01

Abbreviations

FRC-753 List 4C

April 25, 2000

BBREVIATIONS

ACO

Alarm Cut-off Switch

CLASS

Custom Local Area Signalling Services

Central Office

COLU

Central Office Line Unit

COT

Central Office Terminal

DTMF

Dual Tone Multi Frequency

LS/GS

Loop Start/Ground Start

MLT

Mechanized Loop Testing

PBX

Private Branch Exchange

PCM

Pulse Code Modulation

PGTC

Pair Gain Test Controller

POTS

Plain Old Telephone Service

RMA

Return Material Authorization

Remote Terminal

Содержание 150-1353-43

Страница 1: ...CTICE PairGain 1 A C T I V E 2 3 4 5 6 7 8 FAULT FRC 753 CHAN UNIT LIST Eight Channel LoopStart GroundStart Remote Terminal Model FRC 753 List 4C Part Number 150 1353 43 CLEI Code VARHCKTCAB 363 753 1...

Страница 2: ...ed trademarks of their respective companies Information contained in this document is company private to PairGain Technologies Inc and shall not be modified used copied reproduced or disclosed in whol...

Страница 3: ...PairGain Order replacement equipment if necessary Check the packing list to ensure complete and accurate shipment of each listed item If the shipment is short or irregular contact PairGain as describ...

Страница 4: ..._________________________________________ 6 Installing the FRC 753 into the RT Enclosure 6 Provisioning the FRC 753 6 Verify Operation 6 Troubleshooting _______________________________________________...

Страница 5: ...ubscriber line connection through an optional metallic bypass pair Perform metallic bypass testing either manually or through the Pair Gain Test Controller PGTC Features of the FRC 753 are eight LS GS...

Страница 6: ...criber Each FRC 753 detects loop current Ring tip Ring ground The subscriber line battery is supplied by a constant current supply It is sufficient to operate a telephone set over the indicated loop T...

Страница 7: ...ition is a Tip lead open and Ring lead negative into the COT and Tip lead open and Ring lead negative at the RT The following occurs when a PBX requests service for an outgoing call by grounding the R...

Страница 8: ...ower at the RT the LEDs extinguish after a 2 minute timeout period Press and hold the ACO button on the RTLU for two seconds to re activate the LEDs for another two minutes Table 1 FRC 753 Front Panel...

Страница 9: ...r Output 40 V RMS 3 lines simultaneous 5 REN each End to End Loss 2 5 dB 1 0 dB Lightning Protection GR CORE 1089 Section 4 Environmental Operating Elevation 200 ft to 13 000 ft 60 m to 4 000 m Temper...

Страница 10: ...is off no calls are in progress 2 Test circuits for loop start a Place an outgoing call for each subscriber circuit provisioned and observe that the Active LED tracks the progress of the call b Place...

Страница 11: ...this connection to the COT where it can be switched onto the test access bus or to the corresponding subscriber line on the COT channel card Activate test access through the RS 232 maintenance port l...

Страница 12: ...ing into the COT from the CO switch If no ringing is present refer the trouble to the CO switch If ringing is present replace the COT Channel Unit Test again for ringing at the network interface If ri...

Страница 13: ...Services CO Central Office COLU Central Office Line Unit COT Central Office Terminal DTMF Dual Tone Multi Frequency LS GS Loop Start Ground Start MLT Mechanized Loop Testing PBX Private Branch Exchan...

Страница 14: ...Abbreviations 363 753 143 01 Revision 01 10 April 25 2000 FRC 753 List 4C...

Страница 15: ...e software furnished with its products will operate substantially in accordance with the PairGain published specifications and documentation for such software PairGain s entire liability for software...

Страница 16: ...following information in writing along with the equipment you are returning Company name and address Contact name and telephone number The shipping address to which PairGain should return the repaired...

Страница 17: ...quency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely...

Страница 18: ...Corporate Office 14402 Franklin Avenue Tustin CA 92780 Tel 714 832 9922 Fax 714 832 9924 For Technical Assistance 800 638 0031 714 730 3222...

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