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Related Manuals for PairGain PG-Flex FRC-754 L4
Summary of Contents for PairGain PG-Flex FRC-754 L4
- Page 1 PG-F HANNEL EMOTE ERMINAL POTS U TART ROUND TART Model List Number Part Number FRC-754 150-1354-04 ECHNOLOGIES NGINEERING ERVICES ECHNICAL RACTICE ™363-754-104-01J¨ 363-754-104-01 ECTION...
- Page 2 PairGain is a registered trademark, and PG-Flex is a trademark of PairGain Technologies, Inc. Information contained in this document is company private to PairGain Technologies, Inc., and shall not be modified, used, copied, reproduced or disclosed in whole or in part without the written consent of PairGain.
- Page 3 363-754-104-01, Revision 01 Using This Technical Practice SING ECHNICAL RACTICE Two types of messages, identified by icons, appear in the text. Notes contain information about special circumstances. Cautions indicate the possibility of equipment damage or the possibility of personal injury. FRC-754 List 4 June 22, 1998...
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Page 4: Table Of Contents
Table of Contents 363-754-104-01, Revision 01 ABLE OF ONTENTS Product Overview _____________________________________________________________________ 1 Description and Features ........................1 Front Panel............................2 Specifications ............................ 3 Operational Capabilities ........................4 Circuit Operation ..........................4 Loop Start Operation......................4 Ground Start Operation ....................... 6 CLASS Features........................ -
Page 5: Product Overview
RODUCT VERVIEW ® This section provides a product description, and defines the features and specifications for the PairGain PG-Flex™ FRC-754 List 4 Remote Terminal (RT) Channel Unit. Description and Features The FRC-754 List 4 channel unit provides eight loop start or ground start Plain Old Telephone Service (POTS) interfaces between a PG-Flex RT and subscribers. -
Page 6: Front Panel
FRC-754 List 4 front panel LED states and functions, and describes the labels. FRC 754 CHAN UNIT LIST Status LEDs Fault LED FAULT PairGain Warranty control number label Bar code label Figure 1. FRC-754 List 4 Front Panel Table 1. FRC-754 List 4 Front Panel LEDs and Labels LED and Labels Function Solid green: Channel is off hook. -
Page 7: Specifications
363-754-104-01, Revision 01 Product Overview Specifications Electrical Characteristics 600 Ω Analog Impedance 960 Ω (including 430 Ω for the handset) Subscriber Drop ≥ 23 mA DC Loop Current Ringer Output 40 V RMS, 3 lines simultaneously, 5 REN each End-to-End Loss -2.5 dB ±... -
Page 8: Operational Capabilities
Product Overview 363-754-104-01, Revision 01 Operational Capabilities The FRC-754 List 4 channel unit provides eight loop start or ground start POTS interfaces between the RT and subscribers, and performs the following functions: • 64 kbps A-Law PCM encoding • applies ringing voltage •... - Page 9 363-754-104-01, Revision 01 Product Overview Table 3. Circuit Interactions When a Subscriber Initiates an Outgoing Call (Loop Start) Operation CO Switch FRC-754 List 4 COCU FRL-754 List 4 RTCU Subscriber ⇒ ⇒ CO Idle No ringing No ringing ⇐ ⇐ Subscriber goes Off-hook Off-hook...
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Page 10: Ground Start Operation
Product Overview 363-754-104-01, Revision 01 Ground Start Operation The following section summarizes the ground start sequences for on-hook (idle), subscriber inititated outgoing calls, subscriber received incoming calls, and busy conditions. Idle Condition. Ground start idle condition is a Tip-lead open and Ring-lead negative from the CO and Tip lead open and Ring-lead negative at the RT (see Table 6 for circuit interactions). -
Page 11: Class Features
363-754-104-01, Revision 01 Product Overview Subscriber Receives Incoming Call. The following occurs for an incoming call (see Table 8 for circuit interactions): • FLC-704 detects a ringing signal from the CO, along with Tip-ground • FLC-704 signal the FRC-754 to connect Tip-ground and ringing to the PBX •... -
Page 12: Installation And Test
Upon receipt of the equipment: Unpack each container and visually inspect it for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to PairGain. Order replacement equipment if necessary. -
Page 13: Verify Installation
363-754-104-01, Revision 01 Installation and Test Verify Installation After the PG-Flex system is powered up and HDSL communication is synchronized: Verify that the front panel ACTIVE indicators are all OFF and the FAULT indicator is OFF (no calls are in progress). -
Page 14: Troubleshooting
• faulty RT Channel Unit check the loop for excessive length. If ring trip does not occur, replace the RT • loop length too long Channel Unit. If ring trip still does not occur, contact PairGain technical assistance per “Product Support” on page 3 Verify the resistance of the copper loop between the RT Enclosure and the network interface is less than 530 Ω. -
Page 15: Product Support
Do not try to repair the unit. If it fails, replace it with another unit and return the faulty unit to PairGain for repair. Any modifications of the unit by anyone other than an authorized PairGain representative voids the warranty. -
Page 16: Fcc Compliance
The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by PairGain Technologies, Inc. may void the user's authority to operate the equipment. All wiring external to the products should follow the provisions of the current edition of the National Electrical... - Page 18 Corporate Office 14402 Franklin Avenue Tustin, CA 92780 Tel: (714) 832-9922 Fax: (714) 832-9924 For Technical Assistance: (800) 638-0031...