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Sound instance is now called audio instance and uses funcation pointers.
This gives a clean interface to be exchanged with other technologies,
linke SDR.
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Change state uses a function rather than directly setting state
variable.
Some debug commands now use channel number. (for multi-trx setups)
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* All lower case options define common options
* All upper case options define network specific options
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When tone changes to next tone, a transition of 2ms is performed. The last
tone is faded out and the new tone faded in.
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If paging tones are played in sequence, only one tone out of four tones
is played at once. The phase of all tones are calculated as if each tone
would have been sent permanently.
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Cellular networks use transaction instances, so callref is now member of
transaction object.
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This can be multiple transceivers on multiple sound cards.
Two transceivers can be bundled on one sound device as well, using both channels.
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Connect to the oscillator of the transmitter - good girl!
You need to enable pre emphasis in this case.
Connect to the discriminator of the receiver - good boy!
You need to enable de emphasis in this case.
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-W <file.wav> writes a wave file of received audio
-R <file.wav> reads a wave file to feed into decoder
This way you can record a phone and later debug without a phone
and radio equipment.
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This prevents other mobile phone or outgoing call to seize the
base station before the current phone releases the transmitter.
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