VTech C4300 SIP Contemporary Series Cordless Charging Base User Manual

The VTech C4300 is a SIP cordless charging base designed for use with VTech SIP Contemporary Series cordless handsets, such as the C4400 or C4500. It provides charging functionality for accessory handsets and can be used in desktop or wall-mounted configurations. It is part of the package that includes mounting bracket with a screw and Cat-5 network cable. Below are the key specifications, installation, operation, programming, and troubleshooting instructions.

1. Preparations 2. Description 3. Precautions 4. Specifications 5. Installation 6. Check Operation 7. Operating Features 8. Programming 9. Configuration 10. Troubleshooting

Preparations

Verify all parts are included: charging base, mounting bracket with a screw, Cat-5 network cable. Install and charge handset battery before use. Ensure handsets are registered to compatible SIP base before placing into C4300 for charging. Keep handset in the telephone base or charging base when not in use for optimal performance. Avoid placing the phone near communication devices, heat sources, noise sources, dust, moisture, low temperatures, or mechanical vibrations.

WARNING! This product should be installed by a qualified technician. Save these instructions.

Description

The C4300 is a SIP cordless charging base designed for use with VTech SIP Contemporary Series cordless handsets. It includes CHARGE LED, charging poles, wall mount clip, slide switch for energy-saving charging mode, and a detachable base stand for desktop use. Supports battery charging and automatic handset registration/deregistration. Unique hospitality features: Integration with speed dial keys (e.g., CONCIERGE, FRONT DESK) for quick service access, message waiting LED (steady/periodic high/low voltage pulse, reverse polarity, FSK, Siemens/Panasonic). Nominal effective range varies by environment; DECT 6.0 technology. Designed for guest room cordless mobility in SIP setups.

Applications: Hospitality SIP telephony; cordless charging base for hotel desk/wall setups.

Precautions

CAUTION! To prevent electrical shock or equipment damage, unplug before installation. Use only supplied Cat-5 network cable.

WARNING! Follow safety precautions to reduce risk of fire, electric shock, or injury. Do not use near water; avoid rough handling. Do not open casing. Maintain 6-inch distance from medical devices. Wiring conforms to local codes. Avoid storms or gas leaks. Install by qualified technician only; connect only to host equipment. Use only specified battery (Ni-MH); incorrect types risk explosion. Dispose batteries per local codes, not in fire. Keep metallic objects away from handset. Mount at less than 2 meters height. For SIP: Avoid interference from other devices; operate in 0°C - 50°C, 5%-95% humidity.

Specifications

Installation

Turn the charging base over with the bottom side facing up. Align grooves of the base stand with the C4300 charging base and slide up to secure. For desktop: Plug the Cat-5 network cable into the charging base and connect to PoE switch or adapter to wall outlet not controlled by a switch. For wall mount: Reverse wall mount clip, insert mounting bracket into wall plate, position eyelets against studs, slide down to lock. Place the compatible cordless handset on the charging poles; the CHARGE LED illuminates during charging (full charge in 16 hours). Slide switch to left for normal operation, right for energy-saving mode. For cordless integration, register the handset to a compatible SIP telephone base by placing it in the cradle—automatic registration occurs with confirmation. Deregistration: On idle handset, press *331734# then HOLD for confirmation tone. Ensure installation height under 2 meters.

Check Operation

Place handset on C4300; CHARGE LED should turn on. For full system check with compatible SIP base: Ensure network cable is secure. Press TALK on handset for dial tone, then OFF to hang up. Verify registration by placing handset on base (confirmation). Test incoming call: Handset rings, message waiting LED flashes on base/handset. For cordless range, move handset within effective DECT 6.0 range and confirm no interference. Adjust RF transmission power if out of range. If no dial tone, unplug/replug network for 15 seconds to synchronize (up to 1 minute). In hospitality, test speed dial keys (e.g., CONCIERGE) for programmed numbers.

Operating Features

Energy-Saving: Slide switch to right for reduced power mode when handset is not in use.

Programming

Program speed dial on compatible handset: Up to 10 keys. Deregistration: Idle handset, press *331734# then HOLD. No direct programming on C4300; relies on handset/base. For hospitality, program speed dials for services. Battery replacement: Align and insert specified Ni-MH battery, secure cover. Changes effective immediately upon confirmation tone.

Configuration

Default settings indicated by asterisks (*). Adjustments via handset keys.

SettingDefaultOptionsComments
Listening Volume4*1-6During call: VOLUME +/-; resets per call
Speakerphone Volume4*1-6During call: VOLUME +/-
Ringer Volume2*Off,1-6Idle: VOLUME +/-
RF Transmission PowerNormal*Normal, LowFor range adjustment

Admin Access: Handset menu for adjustments.

Troubleshooting

SymptomPossible CauseCorrective Action
No chargingHandset misaligned; dirty contacts.Reposition handset; clean contacts with eraser/dry cloth; unplug/replug cable 15s.
Battery issuesLow/depleted battery.Charge 16 hours; if needed, charge 30 min min; replace with specified battery.
No dial tonePower/line issue.Unplug/replug network 15s; test with working phone; contact provider.
Cannot dial outNoise/no dial tone.Ensure quiet; confirm dial tone; contact provider if hotel-wide.
No ringOut of range; low volume.Move closer to base; adjust ringer VOLUME; check DECT interference.
Interference/fadingDistance; HSIA/modems.Reduce distance; install DSL filter; relocate from appliances.
Abnormal beepsSync issue.Reset: Unplug power/battery, wait, reinstall.

Care: Wipe with soft damp cloth; avoid liquids. Dispose battery properly.

VTech C4300 SIP Contemporary Series Cordless Charging Base Manual© - All Rights Reserved 2025