In addition to the long curly cords, and the part where they are permanently attached to a wall, old-fashioned landlines have something else that we’ve lost in the cell phone revolution: a dial tone.

As some of you have pointed out in our recent post, Using your cell phone as your home phone comes with a risk, some states do require local carriers to maintain a "soft" or "warm" dial tone, which ...

IN long–distance telephony when messages or signals have to be transmitted simultaneously over wire networks, an error in dialling may result in reaching a group of ...