Template:Telephony
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Telephony
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Mobile phone
Optical
Connectivity
Communications satellites
Fibre-optical
Free-space optical
ISDN
Mobile phone signal
POTS
PSTN
Submarine cables
VoIP
Calls
Missed call
Misdialed call
Nuisance call
Phone tag
Applications
Fax transmission
Telephone calls
Telephone newspapers
Théâtrophone
Video calls
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