VTech IS8128-51 Cordless Phone User Manual

The VTech IS8128-51 is a DECT 6.0 cordless phone system with Bluetooth wireless technology, supporting cell phone pairing, digital answering system, Smart Call Blocker, caller ID announce, and expandable up to 5 handsets. It features a backlit display, 1000-name phonebook, 50 caller ID log, and 22-minute recording time. Includes one base and five handsets. 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: Telephone base, five cordless handsets, five battery packs (2.4V 600mAh Ni-MH), five battery covers, five handset chargers with power adapters, telephone base power adapter, telephone line cord. Install and charge handset batteries before use.

CAUTIONS: Use only supplied adapters and batteries. Save these instructions.

Handset Battery Installation: Insert the battery pack into the handset compartment with the label facing down and the wires toward the battery door. Replace the cover. Charge for at least 10 hours initially.

Description

The IS8128-51 is a DECT 6.0 cordless phone with Bluetooth. Base layout: LCD display, VOL +/-, X/DELETE, /REPEAT, PLAY/STOP, ANS ON/OFF, FIND HANDSET, MENU/SELECT, dial pad, HOME/FLASH, CELL, INT, MUTE/DELETE/VOICE GUIDE, speaker, microphone. Handset layout: Earpiece, LCD, MENU/SELECT, VOL +/-, REDIAL/PAUSE, MUTE/DELETE/VOICE GUIDE, /FLASH, CELL, INT, END/OFF/CANCEL, dial pad, speaker, microphone, headset jack. Features: Bluetooth pairing (up to 2 cells/headsets), phonebook download, remote voice control, Smart Call Blocker, answering system, caller ID, intercom, chain dialing, ECO mode. Range: 50 ft indoors, 300 ft outdoors; Bluetooth ~15 ft.

Applications: Home/office telephony with cell integration.

Precautions

CAUTION! To prevent electrical shock, unplug before cleaning. Use only in dry locations. Do not install base above 2 meters.

WARNING! Reduce risk of fire/shock: Do not use near water; avoid rough handling. Do not disassemble. Keep 6 inches from pacemakers. Use only specified adapter (6V DC) and Ni-MH batteries; risk of explosion if wrong. Dispose per local codes. Operate in 0°C - 50°C, 5%-95% humidity. Unplug during storms. Privacy not guaranteed; potential interference with TV/VCR.

Specifications

Installation

Base: Plug power adapter and line cord into base and outlets/jack. For DSL, use filter. Wall mount optional. Charger: Plug adapter into outlet. Registration: Handsets pre-registered; for additional, place in base or use FIND HS method.

CAUTIONS: Use supplied components. Charge batteries 10 hours.

Check Operation

Charge handsets. Press /FLASH for dial tone. Test incoming call: Rings, answer with /FLASH. Test Bluetooth pairing and cell calls. Test answering system: Leave message, play back. If no tone, check connections.

Operating Features

Programming

Phonebook: MENU > Phonebook > Add contact, enter name/number > SAVE. Speed dial: For voicemail, MENU > Settings > Voicemail #. Answering system: Record announcement via MENU > Answering sys > Announcement > Record annc. Deregister: MENU > Handset > Deregister.

Configuration

Default settings indicated by asterisks (*).

SettingDefaultOptionsComments
LanguageEnglish*English, Français, EspañolMENU > Settings > Set language
Ringer VolumeMedium*Off, Low, Medium, HighMENU > Ringers > Ringer volume
Answering Rings4*2-6, Toll saverMENU > Answering sys > # of rings
Recording Time3 min*1-3 minMENU > Answering sys > Recording time
BluetoothOff*On/Off, Pair devicesMENU > Bluetooth > Add cell/headset
Key ToneOn*On, OffMENU > Sound settings > Key tone

Admin Access: MENU for settings; default remote code 19.

Troubleshooting

SymptomPossible CauseCorrective Action
No dial toneLine cord loose; power offCheck connections; replug power
Cannot dial outPulse service; no tonePress * /TONE; check dial mode
Poor audioInterference; out of rangeMove closer; reduce interference
No ringRinger off; quiet modeAdjust ringer; disable quiet mode
Handset not workingLow battery; not registeredCharge; re-register via base
Cannot pair BluetoothOut of range; incompatibleEnable pairing; restart devices
Answering system not recordingFull; offDelete messages; turn on

Care: Wipe with damp cloth. Dispose batteries properly. Service: 1-800-595-9511.

VTech IS8128-51 Cordless Phone Manual© - All Rights Reserved 2025