Table of Contents
Related Manuals for ADC FRC-754 4B
Summary of Contents for ADC FRC-754 4B
- Page 1 PG-F ECHNICAL RACTICE PG-FLEX FRC 754 LIST FAULT HANNEL POTS TART ROUND TART EMOTE ERMINAL HANNEL Model List CLEI Code FRC-754 SCP-FRC754-042-03H ECTION...
- Page 2 Information furnished by ADC is believed to be accurate and reliable. In no event shall ADC be liable for any damages resulting from the loss of data, loss of use, or loss of profits and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages.
- Page 3 • Unpack each container and visually inspect the contents for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to ADC. Order replacement equipment, if necessary. •...
- Page 4 Inspecting Your Shipment SCP-FRC754-042-03H January 6, 2003 FRC-754 List 4B...
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Page 5: Table Of Contents
SCP-FRC754-042-03H ABLE OF ONTENTS Overview ____________________________________________________________________________ 1 Description ............................1 Front Panel ............................2 Specifications .............................3 Operational Capabilities........................3 Circuit Operation..........................4 Loop Start Operation ......................4 On-hook (Idle) Condition..................4 Subscriber Initiated Outgoing Call................4 Subscriber Receives Incoming Call ..............5 Busy Condition......................5 Ground Start Operation .......................5 Idle Condition......................5 Subscriber Initiates Outgoing Call ................6 Subscriber Receives Incoming Call ..............6... - Page 6 SCP-FRC754-042-03H January 6, 2003 FRC-754 List 4B...
- Page 7 SCP-FRC754-042-03H IST OF IGURES 1. FRC-754 List 1A Front Panel..........................2 FRC-754 List 4B January 6, 2003...
- Page 8 SCP-FRC754-042-03H January 6, 2003 FRC-754 List 4B...
- Page 9 SCP-FRC754-042-03H IST OF ABLES 1. FRC-754 Front Panel LEDs and Labels......................2 2. Circuit Interactions for an Idle Condition (Loop Start)..................4 3. Circuit Interactions When a Subscriber Initiates an Outgoing Call (Loop Start)..........4 4. Circuit Interactions When a Subscriber Receives an Incoming Call (Loop Start)..........5 5.
- Page 10 SCP-FRC754-042-03H January 6, 2003 FRC-754 List 4B...
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Page 11: Overview
Description VERVIEW ® ® The ADC PG-Flex FRC-754 Channel Unit provides eight loop start or ground start POTS interfaces between a PG-Flex RT and subscribers. The FRC-754 uses A-Law pulse code modulation (PCM) encoding. For subscriber circuit testing, the FRC-754 provides metallic access to the subscriber line connection through an optional metallic bypass pair. -
Page 12: Front Panel
Front Panel SCP-FRC754-042-03H RONT ANEL The FRC-754 front panel (Figure 1) includes green status LEDs for each line indicating on-hook (idle), ringing, and off-hook conditions, as well as a red LED indicating a fault condition on the CU. Table 1 lists the FRC-754 List 1A front panel LED states and functions, and describes the labels. -
Page 13: Specifications
SCP-FRC754-042-03H Specifications PECIFICATIONS 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 ± 1.0 dB at 1004 Hz Lightning Protection Meets all requirements (GR-CORE-1089, Section 4) Environmental... -
Page 14: Circuit Operation
Circuit Operation SCP-FRC754-042-03H IRCUIT PERATION The following paragraphs define the FRC-754 circuit operation when using loop start for subscriber lines or ground start for PBX lines. Each FRC-754 circuit has an associated LED that indicates when the line is off-hook, idle, ringing, or under test (see Table 1 on page Loop Start Operation... -
Page 15: Subscriber Receives Incoming Call
SCP-FRC754-042-03H Circuit Operation Subscriber Receives Incoming Call The following occurs for an incoming call (see Table 4 for circuit interactions): • FLC-704 detects a ringing signal from the CO • FLC-704 signals the FRC-754 which then connects ringing to the subscriber •... -
Page 16: Subscriber Initiates Outgoing Call
Circuit Operation SCP-FRC754-042-03H Table 6. Circuit Interactions for an Idle Condition (Ground Start) Operation CO Switch FLC-704 COCU FRC-754 RTCU Subscriber ⇐ ⇐ Ring - no ground Ring - no On-hook ground On-hook Subscriber Initiates Outgoing Call The following occurs when a PBX requests service for an outgoing call (see Table 7 for circuit interactions): •... -
Page 17: Busy Condition
SCP-FRC754-042-03H Circuit Operation Table 8. Circuit Conditions When a Subscriber Receives an Incoming Call (Ground Start) Operation CO Switch FLC-704 COCU FRC-754 RTCU Subscriber ⇐ ⇐ Subscriber Ring - no ground Ring - no Idle On-hook ground On-hook ⇒ ⇒ CO seizes Tip - ground Tip - ground... -
Page 18: Installation And Test
Installing SCP-FRC754-042-03H NSTALLATION AND NSTALLING Observe normal electrostatic discharge precautions when handling electronic equipment. Do not hold electronic plugs by their connector edges. Do not touch components or circuitry. Insert each FRC-754 into the RT enclosure, then see if all LEDs on the CU: •... -
Page 19: Troubleshooting
COT CU. If it is not correct, refer the problem to the CO regarding the switch. 5 If the level is still not correct, reinsert the original COT CU. Contact ADC technical assistance per Product Support on inside back cover. -
Page 20: Product Support
ADC’s Return Material Authorization (RMA) Department. Call or write ADC’s RMA Department to ask for an RMA number and any additional instructions. Use the telephone number, fax number or email address listed below: •... - Page 21 If there is another reason for returning the equipment, please let us know so we can determine how best to help you. Pack the equipment in a shipping carton. Write ADC’s address and the RMA Number you received from the RMA Department clearly on the outside of the carton and return to: ADC DSL Systems, Inc.
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Page 22: Fcc Classa Compliance
The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by ADC Technologies, Inc. voids the user's warranty. All wiring external to the product(s) should follow the provisions of the current edition of the National Electrical Code. -
Page 23: Acronyms
SCP-FRC754-042-03H Modifications CRONYMS 2B1Q 2 binary bits encoded in one quaternary symbol American Wire Gauge CLASS Custom Local Area Signaling Services Central Office Central Office Terminal Digital Signal Level Zero Dual Tone Multi-Frequency DTMF HDSL High-bit-rate Digital Subscriber Line Mechanized Loop Testing Private Branch Exchange Pulse Code Modulation Pair Gain Test Controller... - Page 24 World Headquarters: ADC Telecommunications, Inc. 12501 Whitewater Drive Minnetonka, Minnesota USA 55343 For Technical Assistance: 800.366.3891 ´,Sl¶3/¨ 1251763...
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