cordless CL82413 call waiting

Your carrier isn't recognizing the flash, nothing you can do about it, most likely it' too fast. You could try hitting the off button and back to on to make it slower to see if that will work.

if i press off the phone rings and I can get the second call but I lose the first call?

Not sure where back is? I did click on off and then it rang and got the  call.

I wonder if fiber optics makes call waiting different?

Thanks for your response.

Off than back to on, (flash/phone) off than immediately back to on. Would be the same as flash only a bit slower. I don't know if it wii work. Flash is just off, on only it's quick, doing what's described should do the same thing only slower. You could call your carrier to see if they can adjust the flash to accept a quicker flash, but I doubt they can. 

To help clarify the terminology a "hook flash" is when you briefly hang up the line.  The flash button does this as one operation.  You can also do this with a regular phone by pushing the cradle button where the phone sits for a 1/4 second or so.  spoom2 is suggesting you hang up and then immediately reconnect the line on your phone manually, in other words, press "OFF" and then pretty much immediately press "PHONE".

I see some Panasonic phones have a flash timer (should be a feature on all of them but isn't) that you can adjust. So maybe that would be an option if the suggested method doesn't work. You'd have to check the manual for whatever model you'd consider to make sure it had that option. 

thanks for your answers. This is a new at&t set I bought and I like it except that my cable company

is not recognizing the flash. I did try that will pressing off and then on but I wind up disconnecting the

first call. Cable said every thing is working on their end and they cant do any thing. Only other thing I can do  is they have a

feature where I can forward calls with no answer to another phone which could be my cell. That way I wont miss any calls.

This is so frustrating. Thanks

When you tried the off on, did you do it pretty fast? The reason I ask is that should be no different than the switch hook flash using the button in the cradle as described by @JefferMC  If the phone is new and returnable I think I'd look into one of the Panasonic phones systems with the adjustable flash timer. 

thanks but i dont want to  return the phone. I have had these kind of phones for years

with no issue. I recently changed from landline verizon to cable phone which now is

fiber optics. Only way to do this is to tell person I have to hang up and take other call.

Or use the forwarding. At least it does tell me who is calling. Cable told me it is all working

and nothing they can do.  Thanks. I did do it fast but didnt work.

Thanks for the information.