Telephony |
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| Types |
- Landline
- Cable telephony
- Mobile phone
- Satellite phone
- Photophone
|
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| Accessories |
- Answering machine
- Caller ID
|
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| Connectivity |
- Cable protection system
- Communications satellites
- Fibre-optical
- Free-space optical
- ISDN
- Mobile phone signal
- POTS
- PSTN
- Submarine cables
- VoIP
|
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| Calls |
- Missed call
- Misdialed call
- Nuisance call
- Phone tag
|
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| Applications |
- Fax transmission
- Telephone calls
- Telephone newspapers
- Théâtrophone
- Video calls
|
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