Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1998-04-22
2000-11-21
Trost, William G.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455403, H04Q 720
Patent
active
061515140
ABSTRACT:
A system for normalizing a Dual-Tone Multi-Frequency ("DTMF") tone is provided for use in a digital wireless telecommunications system. The normalization system has an electronic memory with normalization parameter variable that stores a redefinable value. A programmable DTMF tone generator circuit is coupled to the electronic memory. The tone generator circuit has an input terminal for receiving a DTMF message packet. A program, executable on the DTMF tone generator, normalizes the DTMF message packet by substituting the redefinable value of the parameter variable in the DTMF message packet such that a normalized DTMF tone is transmitted through an output terminal of the DTMF tone generator circuit.
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Chen Mark
Cheng Heikwan
Gelin Jean A.
Nortel Networks Corporation
Trost William G.
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