Why does my BT Big Button 200 buzz when I first pick up handset?

It is a British Telecom phone, so is unlikely to be fully compatible with Virgin phone service. The message is held with them, and just alerts to a message being there.

I am assuming you are trying to pair iSound BT200.
See Page 6&8 of the ISOUND BT 200 User Manual

During the first time set-up, you must hold the
power/phone button down until you hear a voice say
"Power on" then followed by "Ready for pairing" in order
to sync your device to Bluetooth. After the initial pairing,
you can let go of the power/phone button after you hear
"Power on".

When a user is connected and the BT-200 is o , press ff
and hold for at least 5 seconds to unpair on Bluetooth
(allow another user to connect)

Also check the
Kenwood DDX616 Instruction Manual Bluetooth Unit Connection Bluetooth...

Kenwood DDX6019 Service Manual

If your phone has a "MEM" or "DIR", button, try those. Press "Select", if you have it. Refer to the manual if possible.

By either using a caller id box or a phone that supports caller id. If caller id is active on the line your it will register the data and display it accordingly.

Do you have other phones on the same line?
Are they clear or do they have the static. If it is a telephone company old copper line and it happens on all phones it maybe a Telco problem.

press hold power button for 5 sec and reset and re pair the device

Before you store a telephone number in memory, make sure the dialing mode is
correctly set for the type of service you have. The default dialing mode is tone
(touch-tone), so if you have pulse (rotary) service, you must first change the dialing
mode. See “To Set the Dial Mode.” The following buttons can be stored into any
memory location: 0-9.
STORING FREQUENTLY CALLED NUMBERS
1. Pick up the handset.
2.Press the store button.
3. Push the desired memory location button.
4. Press the store button.
5.Use the handset number keys to enter the telephone number (up to 16-digits)
and press the store button.
6.Hang up the handset.
NOTE: If you make a mistake, use the delete button to delete wrong digits.
CHANGING A STORED NUMBER
Repeat the storage sequence above. The new number replaces the old number at
the memory location.
ERASING A STORED NUMBER
1. Pick up the handset.
2.Press the store button.
3.Press the memory location (0-9) to be erased.
4.Press delete for three seconds until the number in the display is erased.
5.Hang up the handset.
DIALING FREQUENTLY CALLED NUMBERS
1. Pick up the handset and press the mem button.
2. Press 0-9 for the memory location. The number dials automatically.
OR
1. Pick up the handset and press the dial button.
2. Press the review button for the desired memory location.
3. Press the dial button to dial the number.
OR
1. Press dial button while the handset is still in the cradle.
2. Press the review button for the desired memory location, lift the handset and the
number dials automatically.

Download User Manual

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Hi, If you press the button phone book button - Looks like a book symbol.
Whilst in a call the handset will show "Mute On" press the button again to unmute.

Hope that helps.
For the BT Verve 450

Ryan - Worldhosted

BT Freelance XD 5500

Resetting the base & handset/s on a BT Freelance XD5500:

Hold the Find button on the base unit until you get a double beep then
tap the Find button 7 times.
On the handset:
remove a battery
hold the menu key and refit the battery
screen says SW VERSION
press up arrow key until screen shows REGISTER CLEAR
press menu
press menu again and wait for OK to appear
remove a battery and refit

Registering the XD5500 handset.
Then register the handset to the base as follows:
Hold Find button on base unit until you get two beeps
On handset:
Press menu
Scroll to register
Press menu
Scroll to Register Base
Press menu
Press 1
Wait
When it says PIN ? Enter 0 0 0 0 (four zeros) and press menu.

Note:
If you have more than one handset then repeat registering the handset to the base for each subsequent handset/phone.


If this procedure fails to solve the issue, then you have a unit with a
fault and if it is less than a year since purchase the retailer should
change it for you.

To register new handset:
AT THE BASE STATION
1. press and hold down the PAGE button for about 10 seconds until you hear a tone
AT THE HANDSET:
1. press the SET button
2. press the INT button
3. press the * button - the base station numbers should now be displayed (1, 2, 3, 4 )
4. enter the number of the base station you want to register to
5. press the OK button, it's got two arrows on it, and enter the base station 4-digit pin number (Unless you changed this at some point it should be 0000), and press the OK button again