VTech CS1551

VTech CS1551 DECT Cordless Phone User Manual

Model: CS1551

Brand: VTech

1. Introduction

This manual provides detailed instructions for the VTech CS1551 DECT Cordless Phone, a versatile communication system featuring a digital answering machine, call blocking capabilities, and a dual-handset design for enhanced convenience. Please read this manual thoroughly before operating your new phone system to ensure proper setup and functionality.

Key Features:

  • Handset Dual-charging Design: Innovative charging design allows users to charge the handset face-down or face-up for easy viewing or convenient placement.
  • Nuisance Call Blocker: Block up to 60 blacklisted numbers to avoid unwanted calls.
  • Digital Answering Machine: Features 15 minutes of recording time for missed calls.
  • 3-way conference: Handset call transfer and intercom allow multiple users to participate in a conversation.
  • Additional Features: Backlit Display, 60 Name & Number phonebook, Handsfree Speakerphone.

2. What's in the Box

Verify that all items are present in your package:

  • 1 Base Unit
  • 2 cordless handsets
  • 2 chargers
  • 2 AC adaptors
  • 2 battery packs
  • Telephone line cord
  • Quick start guide

3. Setup

3.1. Connecting the Base Unit

  1. Plug the small end of the telephone line cord into the TEL LINE jack on the back of the base unit.
  2. Plug the large end of the telephone line cord into a telephone wall jack.
  3. Plug the AC adaptor into the POWER jack on the back of the base unit.
  4. Plug the AC adaptor into a wall outlet not controlled by a wall switch.

3.2. Battery Installation and Charging

Each handset requires a battery pack for operation. Ensure batteries are fully charged before first use.

  1. Open the battery compartment cover on the back of the handset.
  2. Connect the battery pack plug into the jack inside the compartment, ensuring correct polarity.
  3. Place the battery pack into the compartment and replace the cover.
  4. Place the handset on the base unit or charger with the display facing up or down. The charging indicator on the handset will illuminate.
  5. Allow the handset to charge for at least 16 hours before initial use.
Image showing the two-way charging design of the VTech CS1551 handset on its base.
Figure 3.2.1: The VTech CS1551 features an innovative two-way charging design, allowing the handset to be placed face-up for display viewing or face-down for easy placement on the charging base.
Front view of two VTech CS1551 DECT cordless phone handsets on their charging bases.
Figure 3.2.2: Two VTech CS1551 handsets correctly placed on their charging bases, ready for initial charging or daily use.

4. Operating Instructions

4.1. Making and Receiving Calls

  • To Make a Call: Press TALK or any dial key, then dial the number.
  • To Receive a Call: When the phone rings, press TALK.
  • To End a Call: Press OFF or place the handset back on the base/charger.
  • Handsfree Speakerphone: During a call, press SPEAKER to activate the speakerphone. Press again to return to handset mode.
Image showing a VTech CS1551 handset on its base with a woman cooking in the background, highlighting the handsfree speakerphone feature.
Figure 4.1.1: The handsfree speakerphone allows for convenient communication without holding the handset, ideal for multitasking.

4.2. Digital Answering Machine

The integrated digital answering machine can record up to 15 minutes of messages.

  • To Turn On/Off: Press ANS ON/OFF on the base unit.
  • To Play Messages: Press PLAY/STOP on the base unit.
  • To Record Outgoing Message: Follow instructions in the quick start guide for custom message recording.
Image showing a VTech CS1551 handset on a table with a woman mowing a lawn in the background, illustrating the digital answering machine feature.
Figure 4.2.1: The digital answering machine ensures you never miss an important call, recording messages when you are unavailable.

4.3. Call Blocking

Block unwanted calls by adding numbers to the call block list (up to 60 entries).

  • To Block a Number During a Call: Press CALL BLOCK.
  • To Block a Number from Caller ID Log: Access the Caller ID log, select the number, then press CALL BLOCK.
  • To Manually Add a Number: Navigate to the Call Block menu in the handset settings and enter the number.
Close-up image of the VTech CS1551 handset highlighting the Call Block button.
Figure 4.3.1: The dedicated Call Block button allows for easy blocking of nuisance calls, enhancing privacy.

4.4. Phonebook Management

Store up to 60 names and numbers in the phonebook for quick dialing.

  • To Add a New Entry: Press MENU/SELECT, navigate to Phonebook, then select Add New Entry.
  • To Search/Dial from Phonebook: Press PHONEBOOK, use UP/DOWN arrows to scroll, then press TALK to dial.
Close-up image of a hand holding the VTech CS1551 handset, showing the display with a phone number and the phonebook icon.
Figure 4.4.1: The 60-entry phonebook provides quick access to frequently called contacts.

4.5. Caller ID and Call Waiting

The phone stores the last 20 Caller ID entries. Requires subscription to Caller ID service from your telephone service provider.

  • To Review Caller ID Log: Press CID. Use UP/DOWN arrows to scroll.
  • To Dial from Caller ID Log: Select the desired entry and press TALK.
Image showing the VTech CS1551 handset display with a list of recent calls from the Caller ID log.
Figure 4.5.1: The Caller ID feature displays incoming call information and stores a history of recent calls.

4.6. Redial Function

The handset stores the last 10 numbers dialed for quick redialing.

  • To Redial: Press REDIAL/PAUSE, then use UP/DOWN arrows to select the desired number, and press TALK.
Close-up image of a hand pressing a button on the VTech CS1551 handset, with the display showing a phone number, illustrating the redial function.
Figure 4.6.1: The 10-number redial memory allows for quick and convenient re-connection to recently called numbers.

4.7. 3-Way Conference Calls

Facilitate a three-way conversation between two internal handsets and an external line.

  • During an external call, press INTERCOM to call another handset.
  • Once the other handset answers, press CONF to establish the 3-way conference.
Image depicting three individuals on separate phone calls, illustrating the 3-way conference feature of the VTech CS1551.
Figure 4.7.1: The 3-way conference feature enables multiple participants to join a single call, enhancing communication efficiency.

4.8. Adjusting Settings

  • Ring Volume and Melodies: Access the handset menu to select from 5 polyphonic and 5 simple ring melodies and adjust the ring volume.
Image showing a VTech CS1551 handset on its base with musical notes floating around it, indicating adjustable ring volume and melodies.
Figure 4.8.1: Customize your phone's alerts by choosing from various ring melodies and adjusting the volume to your preference.
  • Alarm and Mute Function: Set convenient alarms on the handset or mute your voice during calls for privacy.
Split image showing a woman exercising with a clock icon and a couple relaxing with a mute icon, representing the alarm and mute functions.
Figure 4.8.2: Utilize the alarm function for reminders and the mute function for privacy during conversations.
  • ECO Power Mode: The phone automatically adjusts and minimizes radio frequency power when the handset is close to the base unit, conserving energy.
Image showing a VTech CS1551 handset on a table in a living room with a leaf icon, symbolizing the ECO Power Mode.
Figure 4.8.3: ECO Power Mode intelligently manages power consumption, contributing to energy efficiency.

4.9. Display and Battery Life

  • Backlit Display: The entire LCD illuminates, allowing for easier viewing in dim light conditions.
Image of the VTech CS1551 handset on its base with its backlit display illuminated in a dimly lit room.
Figure 4.9.1: The backlit display ensures clear visibility of information in various lighting conditions.
  • Battery Life: The handset battery supports up to 13 hours of talk time and 200 hours of standby time.
  • Reliable Long Range: Experience clear communication and extended coverage throughout your home.
Image of a woman talking on the VTech CS1551 handset with a clock icon indicating 13 hours talk time and a battery icon.
Figure 4.9.2: Enjoy extended conversations with up to 13 hours of talk time on a single charge.
Image showing a VTech CS1551 handset and base unit in a large, multi-level home, illustrating the reliable long range.
Figure 4.9.3: The phone system provides reliable long-range coverage, allowing freedom of movement within your home.

5. Maintenance

To ensure optimal performance and longevity of your VTech CS1551 phone system, follow these maintenance guidelines:

  • Cleaning: Wipe the phone and base unit with a soft, damp cloth. Do not use cleaning sprays or liquid cleaners.
  • Battery Care: If the phone will not be used for an extended period, remove the battery from the handset. Store the battery in a cool, dry place.
  • Environment: Avoid placing the phone in direct sunlight, near heat sources, or in areas with excessive moisture or dust.

6. Troubleshooting

If you experience issues with your phone, try the following troubleshooting steps:

ProblemSolution
No dial toneEnsure the telephone line cord is securely plugged into both the base unit and the wall jack. Check if the AC adaptor is properly connected to the base unit and a working power outlet.
Cannot make/receive callsCheck if the handset battery is charged. Ensure the base unit has power. If you have DSL internet, ensure a DSL filter is installed.
Poor sound quality / StaticMove the handset closer to the base unit. Avoid placing the base unit near other electronic devices (e.g., microwaves, Wi-Fi routers) that may cause interference.
Handset not chargingEnsure the handset is correctly seated in the base unit or charger. Clean the charging contacts on both the handset and the base/charger with a dry cloth.
Answering machine not recordingCheck if the answering machine is turned ON. Ensure there is sufficient recording time available.

7. Specifications

FeatureSpecification
Model NumberCS1551
Telephone TypeCordless DECT
Number of Handsets2
Answering System TypeDigital
Answering Machine Recording Time15 Minutes
Phonebook Capacity60 Names & Numbers
Call Block Capacity60 Numbers
Caller ID History20 Calls
Redial Memory10 Last Numbers
Talk TimeUp to 13 Hours
Standby TimeUp to 200 Hours
Power SourceBattery Powered (2 Product Specific batteries included)
Compatible DevicesStandard Landline Networks (PSTN, ISDN)
ColourWhite
Item Weight550 Grams
Package Dimensions36.2 x 26.4 x 9.9 cm

8. Warranty and Support

VTech products are manufactured to high quality standards. For warranty information, technical support, or to purchase accessories, please refer to the contact details provided in your product's quick start guide or visit the official VTech website. Keep your purchase receipt as proof of purchase.

© 2025 VTech. All rights reserved.

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