Does a cellphone have a dial tone? Mobile cellphone never have a dial tone. Before the cellphone came into common usage, a dial tone on a landline told you that the line was available; however, it is ...

In the case of a landline phone, a DC voltage is supplied by the telephone exchange. When the subscriber picks up the handset, the dial tone is heard due to this ...

Phones have come a long way since the old landline days. Our smartphones are light, fast, and have more computing power than NASA used to put a man on the moon.* Some advances came not by adding ...

Pick up the phone in your home, listen for a few seconds, and think about what a dial tone means to you. It’s an easy thing to take for granted. But this deceptively simple sound may figure far more ...

No dial tone. Ah, we probably just left one of the phones off the hook last night. We’re always doing that to guard nighttime and naptime. Our family and friends hate it, but, hey, in the house of a 3 ...