2006-09-29 14:29:29 · 9 answers · asked by GD-Fan 6 in Consumer Electronics ➔ Cell Phones & Plans
Cell phones dial the number from the switch located at the tower. If you were actually had a dial tone and you entered the digits live, you would have miss-dials all the time due to quality of sound issues. When you dial, the phone number is encoded in your transmission and the switch at the tower does the dialing, then the result is sent to your phone.
Businesses used two-way radios with phone patches on towers to make phone calls. The calls placed with a off-hook signal, long DTMF tones (a hole second) per digit, and then ended with a on-hook signal. Calling a local number would take 10 seconds and was tedious at times.
2006-09-29 14:51:29 · answer #1 · answered by Chris 3 · 0⤊ 1⤋
2
2016-08-08 06:51:54 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Because the control channel from the cell site is always on and waiting for you to press the send key with your digits entered on your screen. Then your phone is verified by the hlr as a registered used and it tells the bsc/switch to process the call. Lots more to the process but it's quite boring. Wait, I just thought of something. Since the bcch or control channel is always on that could be considered your dial tone if you could hear it. But you don't want to listen to that.
2006-09-29 18:04:54 · answer #3 · answered by Dorkboy 7 · 0⤊ 0⤋
Probably because they work on radio waves through the cell towers, not through land lines as a normal house phone?
2006-09-29 14:35:30 · answer #4 · answered by Benny D 2 · 1⤊ 0⤋
The new cell phones for old people have them.
2006-09-29 14:38:58 · answer #5 · answered by Anonymous · 0⤊ 0⤋
because there is never a time where you arent dialing a number, you cant leave it off the hook
2006-09-29 14:31:00 · answer #6 · answered by Ally 5 · 0⤊ 0⤋
cell phones are in actuality two way radios
2006-09-29 14:31:38 · answer #7 · answered by rank_peeler 2 · 1⤊ 0⤋
Because they use air waves, not ground lines.
2006-09-29 14:30:37 · answer #8 · answered by bluejeanrose 3 · 0⤊ 0⤋
thats how they were built
2006-09-29 16:57:29 · answer #9 · answered by Anonymous · 0⤊ 0⤋