Home phone giving a high pitched dial tone .

This normally happens when the exchange junction box nearby has some problem... do call the line man to clear the problem

First:
1.Do you have DSL in the home?
2.Anywhere in the house?
3.Anyone using DSL in the home?
Second:
1.Is the second phone wireless (by this I mean, do you plug in an a/c plug and A PHONE CORD?
2.Is the base set with a/c plug and phone cord?
Third:
1.Do you hear this high pitch on both?
2.On only one?
Fourth: (Most Important)
1.Can you plug another land phone, common set into the same jack and get this high pitch?

Answer yes or no to these few questions and we'll get you fixed up. There is no problem with your units if they were purchased new. The odds are extreme, however, they do require batteries.
Please make sure your batteries are new as this is important in wireless sets communicating with a high frequency base set.
I hope I can help you get this working properly in time. I'm retired and have nothing but time.

It is not phone problem contact your operator