The visual ringer will not flashing.

It is called a stutter dial tone and usually means that you have messages on you voice mail.... But its is sounding like a motor boat, and sounds like your in a tunnel while talking. You may need to call your local repair. Could be a bad line card.. as long as its happening on all your phones..

Hi,

Did you pay the Bill ?

this seems as if it,s incoming calls only. Check the line with an alternative Phone. This will verify the lines good. And eliminate that One.
Also check if theres A Tone/Pulse setting.
This can also have adverse effects.
If this is on an adaptor fitting with internet access, try removing the adaptor, and plugging the phone direct into the Socket.
Or try the phone on a seperate or diferent Socket.

Hope This helps.

Mike @ compurepair.

Is the visual ringer or the message light? If it's the message light then you have unheard messages on the voicemail system provided by your telephone company. This system records messages when someone calls while you're already on the phone. Please contact your telephone company for instructions on accessing their voicemail system.

Resetting the voice message waiting indicator
When you receive a new voice mail message, the new message LED on the top of the handset flashes. In the event your message waiting light gets out of sync with your phone company's
voice messaging system, you can manually reset it back to the "No messages waiting" state.
1. Press and hold FiND on the base for five seconds.
Note: The handsets connected to the base will start to beep, however, keep pressing for five seconds.
2. A beep sounds and the message alert tone is reset.
Changing the dial mode
Your phone can communicate with the telephone network in two different ways: tone dialing or pulse dialing. These days, most base networks use a method called tone dialing, so your phone comes programmed for tone dialing. If your phone company uses pulse dialing, you will need to change your phone's dial mode. If you don't get a dial tone or can't connect to the telephone network, please follow the steps below to modify your phone's settings:
1. Press MENU/SELECT.
2. Select the Global Setup menu, and then the Dial Mode submenu.
3. Scroll to highlight Pulse.
4. Press MENU/SELECT. You will hear a confirmation tone.
If you ever need to change the dial mode back to tone dialing, follow the same procedure, but select Tone in step 3.

Finally for future ease of use, here is a link to the user manual were I copied the above information from:

http://www.uniden.com/content/ebiz/uniden/resources/ownersmanuals/DECT1580-3om.pdf

Ringer Settings

Handset ringer volume
4 levels (high/medium/low/off) are available. The default setting is HIGH.

1. Press "Menu."

2. Scroll to "Ringer setting" by pressing up or down arrows.
then press the arrow that looks like a play button arrow pointing to the right.

"Ringer Setting"

3. Scroll to "Ringer volume" by pressing arrow down or arrow up, then press the play button type arrow.

4. Press arrow down or arrow up repeatedly to select the desired volume.

5. Press "Save."



(To turn the ringer off, press down arrow repeatedly until "off?" is displayed, THEN PRESS "SAVE.")

Here's the manual:
http://service.us.panasonic.com/OPERMANPDF/KXTG2431.PDF

Please give me positive feedback if this helps you.

Thanks.

I'm having the same issue, I'm going to exchange it today for another. I'll let you know if that solves the problem!

Message/Ringer Lamp: The Message/
Ringer lamp informs you visually that you
have a message or a call.
When you receive a call, the lamp
flashes depending on the ringing pattern.
When the ringing pattern is set to Single
(Slow flash), Double (Moderate flash), or
Triple (Rapid flash) in your PBX, the lamp
flashes. When the other ringing patterns
are set in your PBX, the lamp may not
flash. (e.g., S-Double, Call Waiting
Tone1).
When someone has left you a message,
the lamp is lit continuously.

Please note that the above indicates that ring patterns are set in the the PBX. These are issues that require a real person to sit at the main system and program the features that users need. I hope you have an I.T. person that knows your phone system. If you don't, you'll have to find a communications company in your area that can program your system. Thanks for using Fixya.

To change the greeting you need to either pick up the phone or press speaker phone then dial *38 then 1 then you will hear a beep/call tone. When you hear that tone record your message/greeting. Once you are finished press the auto dial/store button. If your are satisfied with that message hang up or press speaker phone again to end the call. If you would like to clear the message, then right after you hit auto dial/store you will hear a beep/call tone press 0 to clear or 1 to rerecord.

If you subscribe to call answer service with your phone company, a mail indicator might coincide with a stuttering dial tone, to indicate a message waiting. If on the Bell Canada network, dial *98 to check your voicemail. Once all new messages have been listened to, the dial tone will stop stuttering, and the indicator will hopefully follow suit.

Sound settings Use this menu to customise various sound settings.
Incoming call
Use this menu to select a volume level and alert type
for incoming calls.
• Alert type: specify how you are to be informed of
incoming calls.
• Ring tone: select a ringtone for the call ringer.
• Volume: select a ringer volume.
Keypad tone
Use this menu to select the tone that the phone
sounds when you press a key.
Message tone
Use this menu to set up the ringtone for incoming
messages.
Menu functions
• Tone: select one of several message tones.
• Alert type: specify how you are informed when a
message comes in.
• Repetition: specify how often the phone informs
you of a new message.
Power-on/off tone
Use this menu to select the melody that the phone
sounds when it is switched on or off.
Slide tone
Use this menu to select the tone that the phone
sounds when you open or close the phone.
Silent mode
Use this menu to set how the phone acts to alert you
to a specific event in Silent mode.
Extra tones
Use this menu to customise additional tones for the
phone.
• Minute minder: set the phone to beep every
minute during an outgoing call to keep you
informed of the length of your call.
• Connection tone: set the phone to beep when an
outgoing call is connected to the system.
• Alerts on call: set the phone to beep when you
receive a new message or when the time for an
alarm comes during a call.
• Indicative tone: set the phone to beep when a
pop-up window displays.