Patent classifications
H
ELECTRICITY
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H04
ELECTRIC COMMUNICATION TECHNIQUE
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H04M
TELEPHONIC COMMUNICATION
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3/00
Automatic or semi-automatic exchanges
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H04M3/42
Systems providing special services or facilities to subscribers
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H04M3/42365
Presence services providing information on the willingness to communicate or the ability to communicate in terms of media capability or network connectivity
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H04M3/42374
where the information is provided to a monitoring entity such as a potential calling party or a call processing server
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