Business telephone system
Business telephone system
Telephone system typically used in business environments.
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Readers' pathsAug 2026 – Oct 2026
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Tesla a.s.
Czech manufacturer of electronical and electrical equipment.
7.6%
Centrex
Telephone exchange service.
6.4%
ISDN
Set of digital telephony standards.
4.6%
Telephone exchange
Telecommunication system for establishing telephone calls.
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Switchboard operator
Former telephony occupation.
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1A2 Key Telephone System
Modular business telephone system.
2.8%
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American telephone service monopoly (1877–1984).
2.5%
Registered jack
Telecommunication network interface.
2.3%
Session Initiation Protocol
Voice-over-IP communications protocol.
2.1%
AT&T Merlin
Corporate telephone system.
1.3%
Readers come from
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Switchboard operator
Former telephony occupation.
9.4%
Phreaking
Hacking of analog telephone network.
9.3%
Telephone exchange
Telecommunication system for establishing telephone calls.
7.9%
Asterisk (software)
PBX software.
6.8%
Registered jack
Telecommunication network interface.
4.1%
Centrex
Telephone exchange service.
3.6%
Telephone switchboard
Device used to connect telephone circuits to establish calls between users.
3.4%
Zilog Z80
8-bit microprocessor.
2.7%
Nortel Meridian
Popular PBX telephone system.
2.5%
Voice over IP
Methods of delivering voice communications and multimedia over IP networks.
2.1%