h a l f b a k e r yNaturally, seismology provides the answer.
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============
Requirements:
- 2 symbian (or smart) phones
- 1 server application and 1 client application on each phone
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Usage description:
1. user writes text in the usual way, using the phone's keyboard
2. message is sent by the CLIENT application using MORSE.
MORSE code is transmitted by calling and immediately ending outgoing calls to the destination number. Time intervals between calls should be used as an indication of whether a point or a line is being transmitted. Message start and message end sequences should also be predefined.
3. The SERVER application on the target phone is triggered on each call. It analyses the "incomming call - incomming call ended" sequences to verify if it is a "message start sequence". When the "message start sequence" is detected, it start to listen for the letters of the message (the same way, by analysing "incoming call - incoming call ended" sequences)
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Analysis:
The solution is feasible. Only disadvantage in comparision to the usual way of sending sms messages is the long time necessary to send a message.
The main advantage is the fact that this way sms messages can be sent for FREE.
Engadget: Morse Trumps SMS
http://www.engadget...y/1234000463042528/
91 year old telegraph operator wins race against 13 year old SMS'er. The Morse went out verbatim and the SMS went out with slang abbreviations. [bristolz, May 27 2005]
HB Archive: "Morse SMS"
Morse_20SMS
Circa Feb 04: [st3f]'s idea promoting Morse code on SMS devices. [bristolz, Jun 03 2005]
"Morse coders beating SMSers"
http://www.makezine...ideo_morse_cod.html
"Jay Leno did a text off between two text messengers and two Morse coders. ... The Morse coders handily beat the young whippersnappers with time to spare." [bristolz, Jun 03 2005]
[link]
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//The main advantage is the fact that this way sms messages can be sent for FREE.//
...instead of being almost free as they are now (in those cases where they're not actually free anyway).
How would you persuade cellular operators to accomodate this means of depriving themselves of income? |
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What if you keep getting other calls in the middle of receiving a message? |
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>>>>> angel, May 27 2005 -> How would you persuade cellular operators to accomodate this means of depriving themselves of income? |
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ANSWER: This does not imply the cellular operators. This can be done @home without them knowing about it :) |
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>>>>> waugsqueke, May 27 2005 -> What if you keep getting other calls in the middle of receiving a message? |
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ANSWER:
On the target phone:
On any call, the phone should only start to ring after 0.5 seconds. On a regular call, after this period (0.5 s) the phone starts to ring (sound or vibration) and the user can answer.
The SERVER application will cancel the message that it was receiving before the regular call. |
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On the sending phone:
The CLIENT application detects the "busy" signal and postpones the message for sending later (this is what happens (on symbian smartphones) with regular sms messages, too, if the phone is in a no-signal area). |
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This idea has been proposed before but was deleted. |
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I think the average telegraph operator can send a message faster than the best SMS typist. |
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I have free calling between phones in the same network. Therefore I can bake this without silly software hacks. |
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Sender: "Beep beep beeeep beep..."
Receiver: "I didn't quite get that last bit, right after beeeep"
Sender: "Sorry about that. It was: beep beeeep beep." |
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