ACEC420900MHz 40 Channel Cordless Phone w/ CID

CLARITY C420 F R A N Ç A I S 900 MHz Cordless Telephone with Caller ID Featuring Clarity ® Power ™ Technology Clarity 420 User Guide E S P A Ñ O L F R A N Ç A I S E N G L I S H Safety Instructions . . . . . . . . . . . . . . . . 3 Features . . . . . . . . . . . . . . . . . . . . . . . 5 Getting Started . . . . . . . . . . . . . . . . . . 8 Choosing a Location . . . . . . . . . . . . . 8 Installation . . . . . . . . . . . . . . . . . . . . 8 Battery Installation . . . . . . . . . . . . . . 10 Handset Battery Charging . . . . . . . . . 10 Low Battery . . . . . . . . . . . . . . . . . . . 10 Battery Life . . . . . . . . . . . . . . . . . . . . 10 Headset Jack . . . . . . . . . . . . . . . . . . . . 11 Hearing Aid Compatibility . . . . . . . . . . . 11 Quick Reference Guide . . . . . . . . . . . . . 11 Feature Set Up . . . . . . . . . . . . . . . . . . . 12 Handset . . . . . . . . . . . . . . . . . . . . . . 12 Set Up Mode . . . . . . . . . . . . . . . . . 12 Clarity Power Technology . . . . . . . . 14 Boost Clarity Power On/Off . . . . . . 14 Volume Control . . . . . . . . . . . . . . . 14 Handset Ringer . . . . . . . . . . . . . . . 14 Telephone Base . . . . . . . . . . . . . . . . 14 Boost On/Off . . . . . . . . . . . . . . . . 14 Pulse/Tone . . . . . . . . . . . . . . . . . . . 15 Ringer Volume . . . . . . . . . . . . . . . . 15 Ringer Style . . . . . . . . . . . . . . . . . . 15 Telephone Operations . . . . . . . . . . . . . . 16 Placing a Call . . . . . . . . . . . . . . . . . 16 Answering a Call . . . . . . . . . . . . . . . 16 Temporary Tone . . . . . . . . . . . . . . . . 16 Visual Ringers . . . . . . . . . . . . . . . . . 16 Flash . . . . . . . . . . . . . . . . . . . . . . . . 16 Mute . . . . . . . . . . . . . . . . . . . . . . . . 16 Redial/Pause . . . . . . . . . . . . . . . . . . 16 LCD Display Screen . . . . . . . . . . . . . 17 Lighted Key Pad . . . . . . . . . . . . . . . . 17 Base Lights . . . . . . . . . . . . . . . . . . . . 17 Page/Handset Locator . . . . . . . . . . . . 17 Channel Operation . . . . . . . . . . . . . . 17 Security Code . . . . . . . . . . . . . . . . . 17 Memory Storage . . . . . . . . . . . . . . . . . 18 Memory Storage Locations . . . . . . . . 18 Storing Numbers into Memory . . . . . . 18 Dialing From Memory . . . . . . . . . . . . 18 Editing Numbers in Memory . . . . . . . 18 Deleting Numbers from Memory . . . . . 18 Caller ID Operations . . . . . . . . . . . . . . . 19 Viewing Call List . . . . . . . . . . . . . . . . 19 Placing a Call from the List . . . . . . . . 20 Deleting Entries . . . . . . . . . . . . . . . . 20 Call Waiting . . . . . . . . . . . . . . . . . . 20 Care. . . . . . . . . . . . . . . . . . . . . . . . . . 21 Troubleshooting . . . . . . . . . . . . . . . . . . 21 Regulatory Compliance . . . . . . . . . . . . . 23 Warranty and Service . . . . . . . . . . . . . . 26 Table of Contents Important Safety Instructions owner’s manual. If you are not sure of the voltage in your home, consult your dealer or local power company. 10. Do not place anything on the power cord. Install the telephone where no one will step or trip on the cord. 11. Do not overload wall outlets or exten - sion cords as this can increase the risk of fire or electrical shock. 12. Never push any objects through the slots in the telephone. They can touch dangerous voltage points or short out parts that could result in a risk of fire or electrical shock. Never spill liquid of any kind on the telephone. 13. To reduce the risk of electrical shock, do not take this phone apart. Opening or removing covers may expose you to dan - gerous voltages or other risks. Incorrect reas- sembly can cause electric shock when the appliance is subsequently used. 14. Unplug this product from the wall out - let and refer servicing to the manufacturer under the following conditions: A. When the power supply cord or plug is frayed or damaged. B. If liquid has been spilled into the product. C. If the telephone has been exposed to rain or water. D. If the telephone does not operate nor - mally by following the operating instructions. Adjust only those controls that are covered When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire, electric shock and injury to persons including the following: 1. Read and understand all instructions. 2. Follow all warnings and instructions marked on the telephone. 3. Do not use this telephone near a bathtub, wash basin, kitchen sink or laundry tub, in a wet basement, near a swimming pool or any - where else there is water. 4. Avoid using a telephone (other than a cordless type) during a storm. There may be a remote risk of electrical shock from lightning. 5. Do not use the telephone to report a gas leak in the vicinity of the leak. 6. Unplug this telephone from the wall outlets before cleaning. Do not use liquid cleaners or aerosol cleaners on the telephone. Use a damp cloth for cleaning. 7. Place this telephone on a stable surface. Serious damage and/or injury may result if the telephone falls. 8. Do not cover the slots and openings on this telephone. This telephone should never be placed near or over a radiator or heat register. This telephone should not be placed in a built-in installation unless proper ventila - tion is provided. 9. Operate this telephone using the electrical voltage as stated on the base unit or in the 3 SAVE THESE INSTRUCTIONS E N G L I S H CAUTION: Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. 1. Use only the approved battery pack in the handset of your cordless phone. For Handset Unit: 3.6V 600mAHr NiMH Rechargeable Battery GP60AAAH3BMJZ GPI International Ltd 2. Do not dispose of the battery in a fire as it may explode. Check with local codes for possible special disposal instructions. 3. Do not open or mutilate the battery. Released electrolyte is corrosive and may cause damage to the eyes and skin. It may…

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RF Module (Base) Block Diagram Revision: 00 Page 12 of 28 C420 Base Unit Block Diagram Revision: 00 Page 8 of 28 RF Section (Handset) Block Diagram Revision: 00 Page 13 of 28 3. C420 Handset Block Diagram Revision: 00 Page 3 of 28

External photos FCC ID: ACEC420 External photos FCC ID: ACEC420

C420Rev.006/23/2005 size:20mm x 10mm size: 19mm x 7.5mm IC:1186C-C420 size: 44mm x 24mm V01A S/N:0204000001 70255 8.8mm

Internal photos FCC ID: ACEC420 Base assembly Base Main PCB comp side (View 1) Internal photos FCC ID: ACEC420 Base Main PCB comp side (View 2) Base Main PCB solder side Internal photos FCC ID: ACEC420 Base Page Key front side Base Page Key rear side Internal photos FCC ID: ACEC420 Base Charger and Control front side Base Charger and Control rear side Internal photos FCC ID: ACEC420 Base Oscillator PCB comp side Base Oscillator PCB solder side Internal photos FCC ID: ACEC420 Handset assembly Handset Main PCB comp side (View 1) Internal photos FCC ID: ACEC420 Handset Main PCB comp side (View 2) Handset Main PCB display side Internal photos FCC ID: ACEC420 Handset UP/DOWN and BOOST Key front side Handset UP/DOWN and BOOST Key rear side Internal photos FCC ID: ACEC420 Handset Oscillator PCB comp side Handset Oscillator PCB solder side

Revision: 00 Page 1 of 28 C420 CIRCUIT DESCRIPTION CONTENT 1. Introduction 2. Functional Blocks of C420 Handset 3. C420 Handset Unit Circuit Block Description 4. Functional Blocks of C420 Base unit 5. C420 Base Unit Circuit Block Description 6. Functional Blocks of the RF Module/Section 7. RF Module Circuit Block Description 8. C420 Operation (Base) 8.1 Setting the Ringers 8.2 PULSE/TONE Switch 8.3 BOOST ON/OFF Switch 8.4 PAGE Key 9. C420 Operation (Handset) 9.1 Setting Parameters 9.2 Receiving/Terminating/Making A Call 9.3 Memory Operations 9.4 Caller ID Information 9.5 Caller ID Operation 10. C420 Operation (Base and Handset) 10.1 PAGE Function 10.2 Ringer Function 11. RF Channels. Revision: 00 Page 2 of 28 1. Introduction The model C420 is a CID (Type I and Type II) cordless telephone working at 900MHz (40 channels).. This unit is made up of two parts: a. A Handset unit. b. A Base unit. 2. Functional Blocks of C420 Handset The block diagram of C420 handset unit is as shown below. It is made up of the following parts: 2.1 Keyboard Matrix, Switches and Function LED 2.2 MCU and MCU Interface 2.3 RF Module Section 2.4 Compander 2.5 Data Shaper 2.6 Charge and Control 2.7 Low Battery Detector 2.8 Buzzer 2.9 Audio Circuit 3. C420 Handset Block Diagram Revision: 00 Page 3 of 28 Revision: 00 Page 4 of 28 3. C420 Handset Unit Circuit Block Description 3.1 Keyboard Matrix, Switches and Function LED The keyboard consists of the following keys: • CALL –– for Caller ID operation • DEL –– for Caller ID menu operation • AMB –– one touch memory keys • CH –– for changing RF carrier frequency • TALK –– for On/Off hook control • MEM –– for memory program and dialing • 1, 2, 3, 4, 5, 6, 7, 8, 9, *, 0, # –– numeric keys • FLASH (EXIT) –– provides timed On/Off hook function • MUTE –– turns on/off handset microphone • RD/P –– redials the last number or provides a pause during dialing. The keyboard is connected to Pins 84 to 94, and pin 97 of the MCU (MCU1). The switches consist of the followings: • UP/DOWN –– for Caller ID menu operation • BOOST – for On/Off the receiver amplifier gain • RINGER ON/OFF – turns On/Off the ringer buzzer This is connected to pins 84, 85, 88 and 89 of MCU. The jack consists of the following: • HEADSET – for connection of an external microphone and receiver The function LEDs consist of the followings: • MICMUTE (LED2 - Red) – Located under the “MUTE” key. On/Off when microphone is Off/On. • BOOST (LED1 – RED) – Located under the “TALK” key. On/Off when the receiver amplifier extra gain is On/Off. • IN-USE (LED1 – GREEN) – Located under the “TALK” key. On/Off when the handset is Off-hook/On-hook. • BACKLIGHT (LED7 – LED18, LED5 – LED6 - Green) – Located under the keyboard and LCD backlight. On for a short time when any key is pressed • NEWCALL/IN-USE/RINGER (LED3, LED4 - Red) – Located in the handset antenna. Flashes when the telephone line rings. Steady on/off when handset is off-hook/on-hook. Blinks when there is New Call to be reviewed and during memory programming. These LEDs are controlled by pins 66, 91, 98, 99 of MCU. The display format of the LCD is as shown below. The display is controlled by pins 12 – 65 of MCU. 3.2 MCU and MCU Interface The controller of the handset is MCU1. The frequency of the crystal used is 32.768 KHz. It controls the functions of the handset through the keyboard interface and signals from the base unit. The data to and from the base goes through pin 69 (data from base) and pin 71 (data to base). 3.3 RF Module Section For operation and frequency see RF module section. It receives the PLL data through pins 5, 6, 7 from MCU pins 93, 94 and 95. The antenna located at the top of the unit and is permanent attached to RF module section through a copper wire. 3.4 Compander A compander U3 is used for improving the S/N of transmit and receive audio signals. 3.5 Data Shaper The information which sent from base unit is recovered by the amplifier Q11. 3.6 Charge and Control Revision: 00 Page 5 of 28 Revision: 00 Page 6 of 28 ZD1, D2, Q1 provide polarity and over-voltage protection during battery charging. When the handset is put into the base cradle, the charge signal is detected by pin 84 of the MCU. 3.7 Low Battery Detector The battery voltage is detected by U1-D and Q27. The signal is sent to pin 67 of MCU. 3.8 Buzzer Q4 is the buzzer signal amplifier and driven by the MCU pins 72. 3.9 Audio Circuit When handset is off-hook, speech signal is picked up by the internal microphone MIC1 and sent to the telephone line through amplifier U1-C, the compander U3 and the RF section. The incoming speech is received through the RF section, the compander, the amplifier U1-A, and amplifier U2. When BOOST is on, extra gain is inserted in this audio path by Q16, Q17, Q29 and Q21. The high frequency is boosted with the increase in volume setting. The headset jack is for external receiver and microphone. Revision: 00 Page 7 of 28 4. Functional Blocks of C420 Base Unit The block diagram of C420 base unit is as shown below. It is made up of the following parts: z Power Supply z MCU and MCU Interface z RF Module z Compander z Data Shaper z Charge and Control z Telephone Line Interface z Ring Signal Detector z Base Ringer z Keyboard Matrix, Switches and Function LED C420 Base Unit Block Diagram Revision: 00 Page 8 of 28 Revision: 00 Page 9 of 28 5. C420 Base Unit Circuit Block Description 5.1 Power Supply The base unit is powered by an AC adapter (9V dc). The voltage regulator (BU3) regulates the input DC to 5V. This provides power to every part of the unit. 5.2 MCU and MCU Interface The controller of the base is BMCUX1 and it controls the function of the unit. The frequency of the crystal used is 32.768 KHz. It communicates with the handset through the RF module. PLL data to the RF module BMD1 is sent through pins 84, 95, 97 and 98. The data between Handset and Base is via the pin 94 (data from handset) and pin 96 (data to handset) through the RF module. The transmitter and recei…

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• The test results reported in this test report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization from Intertek Testing Services Hong Kong Limited. • For Terms And Conditions of the services, it can be provided upon request. • The evaluation data of the report will be kept for 3 years from the date of issuance. Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2741 1693 Website: www.hk.intertek-etlsemko.com Clarity, A Division of Plantronics, Inc. Application For Certification 900MHz 40 Channel Analog Modulation Cordless Phone with Caller ID (FCC ID: ACEC420) 05074311 TL/ Ann Choy June 17, 2005 INTERTEK TESTING SERVICES FCC ID: ACEC420 i LIST OF EXHIBITS INTRODUCTION EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: Emission Results EXHIBIT 4: Equipment Photographs EXHIBIT 5: Product Labelling EXHIBIT 6: Technical Specifications EXHIBIT 7: Instruction Manual EXHIBIT 8: Security Code Information INTERTEK TESTING SERVICES FCC ID: ACEC420 ii MEASUREMENT/TECHNICAL REPORT Clarity, A Division of Plantronics, Inc. - MODEL: C420 FCC ID: ACEC420 This report concerns (check one:) Original Grant X Class II Change Equipment Type : DXT - Cordless Telephone Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until : date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37 ? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [12-08-03 Edition] Provision. Report prepared by: Tommy Leung Intertek Testing Services. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Phone : 852-2173-8538 Fax: 852-2741-1693 INTERTEK TESTING SERVICES FCC ID: ACEC420 iii Table of Contents 1.0 General Description............................................................................................2 1.1 Product Description..........................................................................................2 1.2 Related Submittal(s) Grants ............................................................................3 1.3 Test Methodology ............................................................................................3 1.4 Test Facility ......................................................................................................3 2.0 System Test Configuration ...................................................................................5 2.1 Justification.......................................................................................................5 2.2 EUT Exercising Software.................................................................................5 2.3 Support Equipment List and Description.........................................................6 2.4 Measurement Uncertainty ...............................................................................7 2.5 Equipment Modification ...................................................................................7 3.0 Emission Results ...................................................................................................9 3.1 Field Strength Calculation .............................................................................10 3.2 Radiated Emission Configuration Photograph - Base Unit ..........................11 3.3 Radiated Emission Data - Base Unit.............................................................12 3.4 Radiated Emission Configuration Photograph - Handset.............................15 3.5 Radiated Emission Data - Handset ...............................................................16 3.6 Radiated Emission on the bandedge ............................................................19 3.7 Line Conducted Configuration Photograph - Base Unit ...............................21 3.8 Line Conducted Emission Data - Base Unit..................................................22 4.0 Equipment Photographs .....................................................................................25 5.0 Product Labelling .................................................................................................27 6.0 Technical Specifications .....................................................................................29 7.0 Instruction Manual ...............................................................................................31 8.0 Security Code Information ..................................................................................33 INTERTEK TESTING SERVICES FCC ID: ACEC420 iv List of attached file Exhibit type File Description filename Test Report Test Report report.pdf Operation Description Technical Description descri.pdf Test Setup Photo Radiated Emission for Base config photos.doc Test Setup Photo Radiated Emission for Handset config photos.doc Test Report Emission Plot emission.pdf Test Setup Photo Conducted Emission config photos.doc Test Report Conducted Emission Test Result conduct.pdf External Photo External Photo external photos.doc Internal Photo Internal Photo internal photos.doc Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Location Label Artwork and Location label.pdf User Manual User Manual manual.pdf User Manual FCC Information fcc information.pdf INTERTEK TESTING SERVICES FCC ID: ACEC420 1 EXHIBIT 1 GENERAL DESCRIPTION INTERTEK TESTING SERVICES FCC ID: ACEC420 2 1.0 General Description 1.1 Product Description The C420 is a 900MHz 40 Channel Analog Modulation Cordless Phone with Caller ID. The unit is capable of either tone or pulse dialing. The internal power supply's isolation is accomplished through a power transformer having…

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Report No.: 05074311 Talk Mode Ctrl No.: N/A PAGE 1 Tested By:Hong, Report No.:05074311 Scan Settings (1 Range) |--------- Frequencies -----------||----------- Receiver Settings ------------| Start Stop Step IF BW Detector M-Time Atten Preamp OpRge 150k 30M 5k 10k PK+AV 10ms AUTO LN OFF 60dB Final Measurement: x QP / + AV Meas Time: 1 s Subranges: 16 Acc Margin: 20dB Transducer No. Start Stop Name 21 9k 30M EW0698 0 10 20 30 40 50 60 70 80 90 dBuV 100 0.15 MHz 30 110 F15Q F15A Report No.: 05074311 Talk Mode Ctrl No.: N/A Tested By:Hong, Report No.:05074311 Scan Settings (1 Range) |--------- Frequencies -----------||----------- Receiver Settings ------------| Start Stop Step IF BW Detector M-Time Atten Preamp OpRge 150k 30M 5k 10k PK+AV 10ms AUTO LN OFF 60dB Final Measurement Results: no Results

The Worst Case Configuration Photographs FCC ID: ACEC420 Radiated Emission – Base Front View Rear View The Worst Case Configuration Photographs FCC ID: ACEC420 Radiated Emission – Handset Front View Rear View The Worst Case Configuration Photographs FCC ID: ACEC420 Conducted Emission Front View Rear View The Worst Case Configuration Photographs FCC ID: ACEC420 Conducted Emission Side View