Brrrrrrriiiiiiinnnnnnnnnggg!

I love old phones, especially in fun colors.  So of course I was super-duper excited to see this princess phone on sale at Antiques By the Bay.  It's the perfect turquoise, in great shape and adorable!

Unfortunately, it doesn't work in my house.  I have a sneaking suspicion it's a tone vs. pulse issue.  Has anyone else had this problem?  What do I do?  How can I make my beautiful phone function?