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What comes in the box with the VTECH CS6648-3?

Your VTECH CS6648-3 package contains the following items:

• Telephone base

• Handset (2 for CS6648-2, 3 for CS6648-3, 4 for CS6648-4)

• Charger with adapter installed (1 for CS6648-2, 2 for CS6648-3, 3 for CS6648-4)

• Battery for handset (2 for CS6648-2, 3 for CS6648-3, 4 for CS6648-4)

• Battery compartment cover (2 for CS6648-2, 3 for CS6648-3, 4 for CS6648-4)

• Telephone line cord

• Telephone base power adapter

• User’s manual


How do I connect the telephone base for the VTECH CS6648-3?

To connect the VTECH CS6648-3 telephone base, follow these steps:

1. Plug the telephone line cord into a telephone jack.

2. Plug the power adapter into an electrical outlet not controlled by a wall switch.

Important notes:

• Use only the power adapter provided with this product. To obtain a replacement, you will need to contact customer service.

• The power adapter is intended to be correctly oriented in a vertical or floor mount position. The prongs are not designed to hold the plug in place if it is plugged into a ceiling, under-the-table or cabinet outlet.

• If you subscribe to a digital subscriber line (DSL) high-speed Internet service through your telephone line, you must install a DSL filter between the telephone line cord and the telephone wall jack. The filter prevents noise and caller ID problems caused by DSL interference. Contact your DSL service provider for more information about DSL filters.


How do I install and charge the battery on the VTECH CS6648-3 handset?

Follow these steps to install and charge the battery on your VTECH CS6648-3 handset:

Install the battery:

1. Plug the battery connector securely into the socket inside the handset battery compartment.

2. Insert the supplied battery with the label THIS SIDE UP facing up, as indicated.

3. Align the cover flat against the battery compartment, then slide it upwards until it clicks into place.

Charge the battery:

1. Place the handset in the telephone base or charger to charge.

2. For best performance, keep the handset in the telephone base or charger when not in use.

3. The battery is fully charged after 11 hours of continuous charging.

4. It is normal for the handset to feel warm while charging. The battery icon indicates the battery status when the handset is out of the telephone base or charger.


Battery indicators Battery status Action
The battery icon is on. The battery has enough charge to be used for a short time. Charge without interruption (at least 30 minutes).
The battery icon flashes, and you hear three beeps every minute. The battery has very little charge and can be used for only a short time. Charge without interruption (at least 30 minutes).
The screen is blank, or shows Put in charger. The battery has no charge. The handset cannot be used. Charge without interruption (about 11 hours).

How do I mount the VTECH CS6648-3 telephone base to a wall?

To mount the VTECH CS6648-3 telephone base on a wall:

1. Plug the power adapter and telephone line into the telephone base.

2. Route the telephone line cord through the slot on the wall mount bracket and plug it into the telephone wall jack. Route the power adapter cord through the slot and plug it into an electrical outlet not controlled by a wall switch.

3. Align the mounting holes of the wall mount bracket with the standard wall plate and slide the bracket down until it locks securely.

4. Place the telephone base onto the bracket until it locks securely.


How do I set the date and time on my VTECH CS6648-3?

Follow these steps to set the date and time on your VTECH CS6648-3. If you subscribe to caller ID service, the day, month, and year are set automatically with each incoming call.

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Set date/time, then press SELECT.

3. Press the dialing keys (0-9) to enter the month (MM), day (DD), and year (YY). Then press SELECT.

4. Press the dialing keys (0-9) to enter the hour (HH) and minute (MM).

5. Press ▼CID or ▲DIR to choose AM or PM.

6. Press SELECT to save the setting.


How do I set the language on my VTECH CS6648-3 handset?

You can select English, French, or Spanish to be used in all screen displays on your VTECH CS6648-3.

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Settings, then press SELECT.

3. Press SELECT to select >Language.

4. Press ▼CID or ▲DIR to choose English, Français or Español.

5. Press SELECT to save your setting.


How do I make a call using the VTECH CS6648-3 handset?

To make a call with the VTECH CS6648-3 handset:

• Press 📞HOME/FLASH or 🔊SPEAKER and then dial the telephone number.

OR

• First, dial the telephone number and then press 📞HOME/FLASH or 🔊SPEAKER.


How do I answer a call using the VTECH CS6648-3 handset?

To answer a call with the VTECH CS6648-3 handset:

• Press 📞HOME/FLASH or 🔊SPEAKER.

OR

• Press any dialing key (0-9, TONE✳, or #).


How do I end a call using the VTECH CS6648-3 handset?

To end a call with the VTECH CS6648-3 handset:

• Press 🚫OFF/CANCEL or put the handset back in the telephone base or charger.


How do I use the speakerphone on the VTECH CS6648-3?

On the VTECH CS6648-3 handset, press 🔊SPEAKER to switch between the speakerphone and the handset earpiece during a call.


How do I adjust the volume on my VTECH CS6648-3?

You can adjust the listening volume and ringer volume on your VTECH CS6648-3.

Listening volume:

While on a call, press ▲VOL or ▼VOL to adjust the listening volume on the handset.

Handset ringer volume:

When the handset is not in use, press ▲VOL or ▼VOL to adjust the ringer volume. When you set the ringer volume to zero, the ringer is off and the Ringer off icon appears on the screen. A sample of the ringer tone plays as you adjust the volume.

Telephone base ringer volume:

When the handset is not in use, press VOL+ or VOL- on the telephone base to adjust the ringer volume.


How does call waiting work on the VTECH CS6648-3?

If you subscribe to call waiting service from your telephone service provider, you will hear a beep if someone calls while you are already on a call with your VTECH CS6648-3.

• Press 📞HOME/FLASH to put your current call on hold and take the new call.

• Press 📞HOME/FLASH at any time to switch back and forth between calls.


How do I use the mute function on the VTECH CS6648-3?

The mute function on the VTECH CS6648-3 allows you to hear the other party but they cannot hear you.

To mute a call:

1. During a conversation, press MUTE/DELETE. The handset screen displays Muted until the mute function is turned off.

To unmute a call:

1. Press MUTE/DELETE again and resume speaking.


How can I temporarily silence the ringer on my VTECH CS6648-3?

To temporarily silence the ringer on your VTECH CS6648-3 handset without disconnecting the call:

• Press 🚫OFF/CANCEL or MUTE/DELETE while the phone is ringing. The ringer will be silenced for that call only.

To silence the telephone base ringer:

• Press ⏹/CANCEL on the telephone base while it is ringing. The base ringer will be silenced for that call only.


How do I find a misplaced VTECH CS6648-3 handset?

To locate a misplaced VTECH CS6648-3 handset, press 🔎FIND HANDSET on the telephone base. All idle handsets will ring and their screens will display ** Paging **.

To stop the paging:

• Press 📞HOME/FLASH, 🔊SPEAKER, 🚫OFF/CANCEL, or any dialing key (0-9, TONE✳, or #) on the handset.

• Press 🔎FIND HANDSET again on the telephone base.

• Place the handset in the telephone base or charger.


How do I use the redial list on the VTECH CS6648-3?

The VTECH CS6648-3 handset stores the last 10 telephone numbers dialed.

To review and dial from the redial list:

1. Press REDIAL/PAUSE when the handset is not in use.

2. Press ▼CID, ▲DIR, or REDIAL/PAUSE repeatedly until the desired number is displayed.

3. Press 📞HOME/FLASH or 🔊SPEAKER to dial the displayed number.

To delete a redial entry:

1. While viewing the desired redial number, press MUTE/DELETE.


How do I use temporary tone dialing on the VTECH CS6648-3?

If you have pulse (rotary) service, you can temporarily switch from pulse to touch-tone dialing during a call. This is useful for accessing services that require tone signals, such as telephone banking.

1. During a call, press TONE✳.

2. Use the dialing keys to enter the relevant numbers.

3. The phone automatically returns to pulse dialing mode after you end the call.


How can I create and use a directory entry on my VTECH CS6648-3?

The directory on your VTECH CS6648-3 can store up to 50 entries, which are shared by all handsets.

To create a new directory entry:

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Directory, then press SELECT.

3. Press SELECT again to choose >Add new entry.

4. Use the dialing keys to enter a telephone number (up to 30 digits).

5. Press SELECT to move to the name.

6. Use the dialing keys to enter a name (up to 15 characters). Press a key repeatedly until the desired character appears. The first letter of every word is capitalized.

7. Press SELECT to store your new directory entry.


How do I review and dial from the directory on my VTECH CS6648-3?

To review and dial a number from the directory on your VTECH CS6648-3:

To review an entry:

1. Press ▲DIR when the handset is not in use.

2. Press ▼CID or ▲DIR to browse through the directory, or use the dialing keys to start a name search (if you enter a name, press ▼CID or ▲DIR to scroll through the directory).

To dial a directory number:

When the desired entry is displayed, press 📞HOME/FLASH or 🔊SPEAKER to dial the number.


How do I edit a directory entry on my VTECH CS6648-3?

To edit a directory entry on your VTECH CS6648-3:

1. Search for the desired entry in the directory.

2. When the desired entry displays, press SELECT.

3. Use the dialing keys to edit the number, then press SELECT.

4. Use the dialing keys to edit the name.

5. Press SELECT to save.


How do I delete a directory entry from my VTECH CS6648-3?

To delete a directory entry on your VTECH CS6648-3:

1. Search for the desired entry in the directory.

2. When the desired entry is displayed, press MUTE/DELETE.

3. The screen shows Delete entry?. Press SELECT to confirm.

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How do I assign and dial a speed dial number on my VTECH CS6648-3?

You can assign up to 10 directory entries to speed dial locations (0-9) on your VTECH CS6648-3.

To assign a speed dial number:

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Directory, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Speed dial, then press SELECT.

4. Press ▼CID or ▲DIR to choose a desired speed dial location (0-9), then press SELECT.

5. Press ▼CID or ▲DIR to scroll to the desired directory entry.

6. Press SELECT to save.

To dial a speed dial number:

Press and hold a dialing key (0-9) to dial the number stored in the corresponding speed dial location. The handset must not be in use.


How do I delete a speed dial number on my VTECH CS6648-3?

To delete a speed dial number assignment on your VTECH CS6648-3:

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Directory, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Speed dial, then press SELECT.

4. Press ▼CID or ▲DIR to choose a desired speed dial location (0-9).

5. Press MUTE/DELETE.

6. The screen shows Clear SD #?. Press SELECT to confirm.


How do I review the caller ID log on my VTECH CS6648-3?

The VTECH CS6648-3 stores information about the last 30 incoming calls. To review the caller ID log:

1. Press ▼CID when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll through the list.

If the telephone number has more than 15 digits, a dash appears after the 14th digit, and the remaining digits are displayed on the next line.

You may see the following indicators:

• NEW: The call is new and has not been reviewed.

• RPT: You have received at least two calls from this number. The number of repeat calls is shown below the RPT icon.

Note: You will hear two beeps when you reach the beginning or end of the caller ID log.


How do I dial a number from the caller ID log on my VTECH CS6648-3?

To dial a number from the caller ID log on your VTECH CS6648-3:

1. Search for the desired entry in the caller ID log.

2. When the entry is displayed, press 📞HOME/FLASH or 🔊SPEAKER to call the number.


How can I save a caller ID log entry to the directory of my VTECH CS6648-3?

To save a number from the caller ID log to your VTECH CS6648-3 directory:

1. Search for the desired entry in the caller ID log.

2. When the desired entry is displayed, press SELECT.

3. Press SELECT again to choose >To Directory.

4. Use the dialing keys to edit the number if necessary, then press SELECT.

5. Edit the name if necessary.

6. Press SELECT to save.


How do I delete entries from the caller ID log on my VTECH CS6648-3?

You can delete a single entry or all entries from the caller ID log on your VTECH CS6648-3.

To delete a single entry:

• When viewing the desired caller ID log entry, press MUTE/DELETE.

To delete all entries:

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Caller ID log, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Del all calls, then press SELECT.

4. The screen shows Delete all calls?. Press SELECT to confirm.


What does the missed call indicator on the VTECH CS6648-3 mean?

When there are calls that have not been reviewed in the caller ID log on your VTECH CS6648-3, the handset screen shows XX Missed calls.

Each time you review a caller ID log entry marked with NEW, the number of missed calls decreases by one. When you have reviewed all the missed calls, the missed calls indicator disappears.

If you do not want to review the missed calls one by one, you can press and hold 🚫OFF/CANCEL on the idle handset to erase the missed calls indicator.


How do I use the intercom feature on my VTECH CS6648-3?

You can use the intercom feature on your VTECH CS6648-3 for conversations between two handsets.

To initiate an intercom call:

1. Press INT on your handset when not in use.

2. The screen shows Intercom to:. Use the dialing keys to enter a destination handset number.

3. The destination handset rings. To answer the intercom call, press 📞HOME/FLASH, 🔊SPEAKER, INT or any dialing key on the destination handset.

To end an intercom call:

Press 🚫OFF/CANCEL or INT on either handset, or place the handset back in the telephone base or charger.


How do I answer an incoming call during an intercom call on my VTECH CS6648-3?

If you receive an outside call while you are on an intercom call with your VTECH CS6648-3, you will hear an alert tone.

• To answer the outside call, press 📞HOME/FLASH. The intercom call ends automatically.

• To end the intercom call without answering the outside call, press 🚫OFF/CANCEL. The telephone continues to ring.


How do I transfer a call using the intercom on my VTECH CS6648-3?

You can transfer an outside call to another system handset using the intercom feature on your VTECH CS6648-3.

1. During an outside call, press INT.

2. The current call is put on hold. Your handset shows Intercom to:. Use the dialing keys to enter the destination handset number.

3. The destination handset rings. To answer, the user of the other handset can press 📞HOME/FLASH, 🔊SPEAKER, INT or any dialing key.

4. You can now have a private conversation with the destination handset. To transfer the call, press 🚫OFF/CANCEL on your original handset or place it back in the base or charger. The other handset is automatically connected to the outside call.

Alternatively, you can press 📞HOME/FLASH on your handset to end the conversation with the other handset and return to the outside call.


What is the difference between the built-in answering system and voicemail service on the VTECH CS6648-3?

Your VTECH CS6648-3 has both a built-in answering system and supports voicemail service offered by your telephone service provider. The main differences are:

Built-in answering system Voicemail service
Messages are stored in the telephone base. the service provider’s network.
To retrieve messages you can press a button on the telephone base or handset, or access remotely from any touch-tone phone. you usually dial an access number followed by a security code.
To know that you have new messages the message window on the telephone base flashes, and XX new messages shows on the handset screen. the telephone usually provides new voicemail indicators (for example, a stutter dial tone).

How do I turn the answering system on or off on my VTECH CS6648-3?

You can turn the answering system on or off from either the handset or the telephone base of your VTECH CS6648-3.

Using the handset:

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Answering sys, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Answer on/off, then press SELECT.

4. Press ▼CID or ▲DIR to choose >On or >Off.

5. Press SELECT to save.

Using the telephone base:

• Press ⏺/ANS ON to turn the answering system on or off. If the answering system is turned on, it announces, “Calls will be answered.” If it is turned off, it announces, “Calls will not be answered.”


How do I record a new announcement for the answering system on my VTECH CS6648-3?

You can use the preset announcement or record your own announcement for the VTECH CS6648-3 answering system. The announcement can be up to 90 seconds long.

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Answering sys, then press SELECT.

3. Press SELECT to choose >Announcement.

4. The system announces, “To play, press 2. To record, press 7.” Press 7 to record.

5. The system announces, “Record after the tone. Press 5 when you are done.” After the tone, speak towards the microphone on the handset.

6. Press 5 when done.

To listen to the recorded announcement:

1. Follow steps 1-3 above.

2. The system announces, “To play, press 2. To record, press 7.” Press 2 to play the current announcement.


How do I play back messages on my VTECH CS6648-3?

You can play messages on your VTECH CS6648-3 using either the telephone base or a handset.

Using the telephone base:

• Press ▶/PLAY/STOP when the phone is not in use.

Options during playback on the base:

• Press VOL+ or VOL- to adjust the speaker volume.

• Press ⏩/SKIP to skip to the next message.

• Press ⏪/REPEAT to repeat the message currently playing. Press ⏪/REPEAT twice to listen to the previous message.

• Press ❌/DELETE to delete the current message.

• Press ▶/PLAY/STOP to stop the playback.

Using a handset:

1. Press MENU when the phone is not in use.

2. Press SELECT to select >Play messages.

Options during playback on the handset:

• Press ▲VOL or ▼VOL to adjust the listening volume.

• Press 6 or ⏩/SKIP to skip to the next message.

• Press 4 or ⏪/REPEAT to repeat the message currently playing. Press 4 or ⏪/REPEAT twice to listen to the previous message.

• Press MUTE/DELETE to delete the message.

• Press 5 or ▶/PLAY/STOP to stop the playback.


How do I delete all old messages on my VTECH CS6648-3?

You can delete all old messages from either the telephone base or a handset of your VTECH CS6648-3. New messages cannot be deleted until you have reviewed them.

Using the telephone base:

1. Press ❌/DELETE when the phone is not in use.

2. The system announces, “To delete all old messages, press DELETE again.”

3. Press ❌/DELETE again. All previously heard messages are erased.

Using a handset:

1. Press MENU when the phone is not in use.

2. Press ▼CID or ▲DIR to scroll to >Answering sys, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Delete all old, then press SELECT.

4. The screen shows Delete all old messages? Press SELECT to confirm.


How do I access the answering system remotely on my VTECH CS6648-3?

You can remotely access the answering system of your VTECH CS6648-3 from any touch-tone phone.

1. Dial your telephone number from any touch-tone phone.

2. When the system plays your announcement, enter the two-digit remote access code (the preset code is 19).

3. The system will automatically announce the number of new or old messages, then begin playback of new messages.

4. You can also enter the following remote commands:

Command Action
1 Play all messages.
2 Play only new messages.
3 Delete the current message (during playback).
33 Delete all old messages.
4 Repeat the current message (during playback).
5 Stop.
✳5 Hear a list of remote commands.
6 Skip to the next message (during playback).
7 Record a new announcement.
8 End the call.
0 Turn the answering system on or off.

5. Hang up to end the call and save all undeleted messages.


How do I set the number of rings for the answering system on my VTECH CS6648-3?

You can set the answering system of your VTECH CS6648-3 to answer after 2, 3, 4, 5, or 6 rings. You can also select Toll saver, where the system answers after two rings if you have new messages, or after four rings when there are no new messages.

1. Press MENU when the handset is not in use.

2. Press ▼CID or ▲DIR to scroll to >Answering sys, then press SELECT.

3. Press ▼CID or ▲DIR to scroll to >Ans sys setup, then press SELECT.

4. Press SELECT to choose ># of rings.

5. Press ▼CID or ▲DIR to choose among 2, 3, 4, 5, 6, or Toll saver.

6. Press SELECT to save.


How do I screen or intercept calls on my VTECH CS6648-3?

Your VTECH CS6648-3 allows you to screen calls as they are being recorded by the answering system.

Call screening:

When the answering system is on and a call is being answered, you will hear the incoming message from the telephone base. You can adjust the call screening volume by pressing VOL+ or VOL- on the base.

Call intercept:

If you want to talk to the person whose message is being recorded, press 📞HOME/FLASH or 🔊SPEAKER on the handset.


How can I retrieve voicemail messages on my VTECH CS6648-3?

Voicemail is a feature available from most telephone service providers. It may be included with your service or may be optional. Fees may apply.

To retrieve voicemail, you typically dial an access number provided by your telephone service provider, and then enter a security code. Contact your service provider for instructions.

After you have listened to all new voicemail messages, the new voicemail indicator on the display of your VTECH CS6648-3 will turn off automatically.


How should I care for my VTECH CS6648-3 telephone?

To keep your VTECH CS6648-3 working well and looking good, follow these guidelines:

Avoid rough treatment: Do not drop the handset. Handle your phone gently.

Avoid water: Do not use the telephone near water. For example, do not use it near a bathtub, wash bowl, kitchen sink, laundry tub or swimming pool, or in a wet basement or shower.

Electrical storms: Electrical storms can sometimes cause power surges harmful to electronic equipment. For your own safety, use caution when using electrical appliances during storms.

Cleaning your telephone: Your telephone has a durable plastic casing that should retain its luster for many years. Clean it only with a soft cloth slightly dampened with water or a mild soap. Do not use excess water or cleaning solvents of any kind.


I am experiencing issues with my VTECH CS6648-3. What are some common problems and solutions?

Here are some common issues and troubleshooting steps for the VTECH CS6648-3:

Problem Suggestion
My telephone does not work at all.

• Make sure the power cord is securely plugged in.

• Make sure that the battery connector is securely plugged into the cordless handset.

• Make sure the telephone line cord is securely and firmly plugged into the telephone base and the telephone wall jack.

• Charge the battery in the cordless handset for at least 11 hours. For optimum daily performance, return the cordless handset to the telephone base or charger when not in use.

• If the battery is depleted, it may take approximately 30 minutes to charge the handset before it shows Low battery. See the battery charging table for details.

• Reset the telephone base. Unplug the unit’s electrical power. Wait for approximately 15 seconds, then plug it back in. Allow up to one minute for the cordless handset and telephone base to reset.

• You may need to purchase a new battery.

The display shows No line. I cannot get a dial tone.

• First, try all the suggestions mentioned above.

• If the previous suggestions do not work, disconnect the telephone line cord from your telephone and connect the telephone line cord to another telephone.

• If there is no dial tone on that other telephone either, your telephone line cord may be defective. Install a new telephone line cord.

• If changing the telephone line cord does not help, the wall jack (or the wiring to this wall jack) may be defective. Contact your telephone service provider.

• If you use a DSL service, you must install a DSL filter between the telephone line cord and the telephone wall jack. The filter prevents noise and caller ID problems caused by DSL interference. Contact your DSL service provider for more information about DSL filters.

I cannot dial out.

• First, try all the suggestions mentioned above.

• Make sure you have a dial tone before dialing.

• If other phones in your home are having the same problem, contact your telephone service provider (charges may apply).

The display shows To register HS… and …see manual alternately. The handset is not working.

• The handset has lost its registration with the telephone base. Place the handset in the telephone base to re-register it. The registration process takes about 90 seconds to complete.

How to use the PDF below:
* Touchscreen: Swipe up/down with-in the PDF to scroll and pinch or spread with two fingers to zoom.
* Mouse: While your mouse is hovering over the PDF, use the mouse wheel to scroll and click on the – / + buttons at the bottom of the PDF to zoom.

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