Landline rings once, goes to busy signal
This problem just started. Incoming calls ring once and the caller gets a busy signal. When I answer, it is just a dial tone. If I grab it quickly, I can get the call. I have tried the outside access and it works fine. We have about 8 jacks in the house, dial up internet, and dish network. I have unplugged all lines and tried one at a time, still same problem. I bought new phones, still same problem. Any ideas? Verizon charges 90 bucks per 1/2 hour. That is highway robbery!