Template:Telephony - Wikipedia

v t e Telephony
Types	Landline Mobile telephony Cable telephony Photophone
Accessories	Answering machine Caller ID
Connectivity	Cable protection system Cellular network Communications satellites Fibre-optical Free-space optical ISDN Mobile phone signal POTS PSTN Submarine cables Telecommunication circuit Telephone exchange Business telephone system Telephone network VoIP
Calls	Missed call Misdialed call Nuisance call Phone tag Call screening
Calling	Telephone Mobile phone Satellite phone Payphone Call setup Clearing Dialling Dial tone Direct distance dialing DTMF signaling International direct dialing Pulse dialing Push-button telephone Rotary dial Telephone keypad Operator assistance
Numbers	Telephone directory Telephone exchange names Telephone number Emergency telephone number Toll-free telephone number Telephone numbering plan Vertical service code
Applications	Fax transmission Telephone calls International call Local call Long-distance calling Telephone newspapers Théâtrophone Video calls
History	History of the telephone Invention of the telephone Timeline of the telephone History of mobile phones History of videotelephony Carrier telephony Party line Phreaking Telephone switchboard Switchboard operator
Telecommunication portal Telephones portal