How to use call waiting

The FLASH button is just a short interrupt. You should be able to activate it, if "call waiting" is supported by your service provider, by pressing the OFF, then TALK buttons in quick succession. Try it.

If I recall, YOU must initialize the call. While first party is on the line, you push the "Flash" button, wait for the dial tone, then dial your second party. Push "Flash" again and everyone should be connected. If this still does not work, it may be that you have to be enrolled with that service through your local phone company before your phone can perform that function.

Is this a trick question or is the HOLD button not working on your phone? If you mean call waiting, get rid of that feature. In the meanwhile, you can press the FLASH button on the phone, BUT the phone system has to be programmed for the FLASH button to mean flash and not disconnect.
It's a timer issue in the programming.

Carl

The flash button or "flash" the hookswitch(press the hookswitch quickly).

I would try to reregister the handset. It's on page 40 of the instruction manual. Here's a link to the manual.

http://service.us.panasonic.com/OPERMANPDF/KXTG5421S.pdf

Good luck!

One of the two "soft buttons" at the top of the keypad (first row of keys under the handset's display) should read Flash when you are on a call. Hit that button, you'll hear the line tone, dial the number and wait for the other person to answer. Hit Flash again and they should be joined together. If not, you may need to subscribe to Call Waiting/3-way Calling through your telephone company.

Yes, I re-read the manual and it says (under Caller ID) to press the flash/program button to answer the new incoming call...I must have hit the pound key in error thinking I hit the flash button. I have yet to try this in real time, but will next time it arises and report if it does NOT work.

change the flash time to 250ms and it will work 100%

to set the 5 main presets:
with radio on, use the manual tuner to find station you want on a preset. push and release mem/clock adj button (mem will flash on display), push preset number and while holding it in push the mem/clock adj button again (mem on display will go away). station is now preset to that number.

to set the 5 additional presets:
with radio on, use the manual tuner to find station you want on a preset. push and release the +5 button (+5 will flash on display), push and release mem/clock adj button (mem will also flash on display), push preset number and while holding it in push the mem/clock adj button again (mem on display will go away). station is now preset to that +5 number.

to set the digital clock display:
with radio off, push and release the mem/clock adj button (clock display will now flash), use the tun up / hr part of manual tuning button to adjust hour and the tun dn / min part to adjust minutes.

According to the manual when you get this message
Please lift up andtry again.
A handset button was pressed while the handset was
on the base unit or charger. Lift the handset and press
the button again.