Sorry, drgeoff, I wasn't sure what you were driving at with your question.
When I pick up my Uniden handset, I get a dial tone. When I dial, there's silence in the handset. When I'm finished dialing, and I press the talk button, I get a dial tone again. So, the dial tone is present when I pick up the handset, the dial tone goes away while I'm dialing, but the dial tone returns after I'm finished dialing. There is no difference in the sound of the dial tone.
Thanks.
=>Donna