A friend just called me on my cell and said she had been trying to reach me all afternoon, but that both lines were busy -- not voice mail, but busy signals. We did not have DND enabled (and if we had, we would have sent calls to voice mail), and we weren't on the phone.

I then checked the phones, and everything seemed normal. I called myself from my cell, and both lines rang normally.

So I'm wondering whether anyone else noticed a problem with inbound calls today, or whether my friend was somehow misdialing?