Freddy, the wiener dog, is always on guard duty. Freddy has a particular sharp bark for arrivals - "I'm on guard duty here." "Who is it?" I just noticed that it includes the word "hello." Nana called and Eric answered the phone, "Hi Nana." No response from Freddy. When Eric handed the phone to me, I said, "Hello." This prompted Freddy to come charging into the room with his "Who is it?" bark. He wouldn't stop. I kept saying, "Freddy, it's okay. It's Nana." but the barking continued. Finally, I put the phone to his ear so he could hear her voice -- the barking stopped. Thanks for being on alert, Freddy, but I've got this one.