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Reply To: fibre optics and microwave

#49313
pix
Guest

javed,

in fixed lines, the “called party” number is sent in real time to the switch, via frequencies. Each time a digit is typed, the switch receives the digit’s frequency right away.

in GSM, the number is sent in one unique message : the whole number is contained in the “CALL SETUP” message. Therefore there is no need to code the digits into frequencies.

regards,