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% About PSTN: Public Switched Telephone Network GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Internet, Networking, & Security &gt; Home Networking <h1> PSTN (Public Switched Telephone Network)</h1> <h2> The history and current relevance of landline phone service</h2> By Bradley Mitchell Bradley Mitchell Writer Massachusetts Institute of Technology University of Illinois An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking. lifewire's editorial guidelines Updated on December 13, 2019 Tweet Share Email Getty Images/John Lund/Marc Romanelli Tweet Share Email Home Networking The Wireless Connection Routers & Firewalls Network Hubs ISP Broadband Ethernet Installing & Upgrading Wi-Fi & Wireless The&nbsp;Public Switched Telephone Network (PSTN)&nbsp;is the global collection of interconnects originally designed to support circuit-switched voice communication.
Julia Zhang Member
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% About PSTN: Public Switched Telephone Network GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Internet, Networking, & Security > Home Networking

PSTN (Public Switched Telephone Network)

The history and current relevance of landline phone service

By Bradley Mitchell Bradley Mitchell Writer Massachusetts Institute of Technology University of Illinois An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking. lifewire's editorial guidelines Updated on December 13, 2019 Tweet Share Email Getty Images/John Lund/Marc Romanelli Tweet Share Email Home Networking The Wireless Connection Routers & Firewalls Network Hubs ISP Broadband Ethernet Installing & Upgrading Wi-Fi & Wireless The Public Switched Telephone Network (PSTN) is the global collection of interconnects originally designed to support circuit-switched voice communication.
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Brandon Kumar 3 minutes ago
The PSTN provides traditional Plain Old Telephone Service (POTS) — also known as landline phone&nb...
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Lucas Martinez 4 minutes ago
While the original forms of telephony including PSTN all relied on analog signaling, modern telephon...
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The PSTN provides traditional Plain Old Telephone Service (POTS) — also known as landline phone&nbsp;service — to residences and many other establishments. Parts of the PSTN are also utilized for&nbsp;Internet connectivity services including Digital&nbsp;Subscriber Line (DSL)&nbsp;and&nbsp;Voice over Internet Protocol (VoIP). PSTN is one of the foundation technologies of&nbsp;telephony&nbsp;— electronic voice communications.
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The PSTN provides traditional Plain Old Telephone Service (POTS) — also known as landline phone service — to residences and many other establishments. Parts of the PSTN are also utilized for Internet connectivity services including Digital Subscriber Line (DSL) and Voice over Internet Protocol (VoIP). PSTN is one of the foundation technologies of telephony — electronic voice communications.
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Scarlett Brown 6 minutes ago
While the original forms of telephony including PSTN all relied on analog signaling, modern telephon...
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Andrew Wilson 7 minutes ago
Older telephone networks used analog signaling but were gradually upgraded to use digital infrastruc...
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While the original forms of telephony including PSTN all relied on analog signaling, modern telephony technologies employ digital signaling, work with digital data, and also support Internet connectivity.&nbsp;The rollout of Internet telephony allows both voice and data to share the same networks, a convergence that the worldwide telecommunications industry is moving toward (for largely financial reasons). A key challenge in Internet telephony is to achieve the same extremely high reliability and quality levels that traditional telephone systems achieved. <h2> History of PSTN Technology </h2> Telephone networks were expanded worldwide during the 1900s as telephones became a routine fixture in homes.
Harper Kim Member
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While the original forms of telephony including PSTN all relied on analog signaling, modern telephony technologies employ digital signaling, work with digital data, and also support Internet connectivity. The rollout of Internet telephony allows both voice and data to share the same networks, a convergence that the worldwide telecommunications industry is moving toward (for largely financial reasons). A key challenge in Internet telephony is to achieve the same extremely high reliability and quality levels that traditional telephone systems achieved.

History of PSTN Technology

Telephone networks were expanded worldwide during the 1900s as telephones became a routine fixture in homes.
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Grace Liu 2 minutes ago
Older telephone networks used analog signaling but were gradually upgraded to use digital infrastruc...
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Older telephone networks used analog signaling but were gradually upgraded to use digital infrastructure. Most people associate the PSTN with the copper wiring found in many homes although modern PSTN infrastructure also uses fiber optic cables&nbsp;and leaves copper only for the so-called "last mile" of wiring between home and the telecommunication provider's facilitates.
Charlotte Lee Member
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Older telephone networks used analog signaling but were gradually upgraded to use digital infrastructure. Most people associate the PSTN with the copper wiring found in many homes although modern PSTN infrastructure also uses fiber optic cables and leaves copper only for the so-called "last mile" of wiring between home and the telecommunication provider's facilitates.
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Nathan Chen 14 minutes ago
The PSTN utilizes the SS7 signaling protocol. Household PSTN telephones are plugged into w...
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The PSTN utilizes the&nbsp;SS7&nbsp;signaling protocol. Household PSTN telephones are plugged into wall jacks installed in homes using telephone cords with RJ11 connectors. Residences don't always have jacks in all the right locations, but homeowners can install their own telephone jacks&nbsp;with some basic knowledge of electrical wiring.
Sophia Chen Member
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The PSTN utilizes the SS7 signaling protocol. Household PSTN telephones are plugged into wall jacks installed in homes using telephone cords with RJ11 connectors. Residences don't always have jacks in all the right locations, but homeowners can install their own telephone jacks with some basic knowledge of electrical wiring.
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Sophia Chen 1 minutes ago
One PSTN link supports 64 kilobits per second (Kbps) of bandwidth for data. The PSTN phone line can ...
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One PSTN link supports 64 kilobits per second (Kbps) of bandwidth for data. The PSTN phone line can be used with&nbsp;traditional dial-up network modems&nbsp;for connecting a computer to the Internet. In the early days of the World Wide Web (WWW), this was the primary form of home Internet access but was made obsolete by broadband Internet services.
Andrew Wilson Member
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One PSTN link supports 64 kilobits per second (Kbps) of bandwidth for data. The PSTN phone line can be used with traditional dial-up network modems for connecting a computer to the Internet. In the early days of the World Wide Web (WWW), this was the primary form of home Internet access but was made obsolete by broadband Internet services.
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Henry Schmidt 15 minutes ago
Dial-up Internet connections supported up 56 Kbps.

PSTN vs ISDN

Integrated Services...
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Dial-up Internet connections supported up&nbsp;56 Kbps. <h2> PSTN vs ISDN </h2> Integrated Services Digital Network (ISDN)&nbsp;was developed as an alternative to PSTN that provides both telephone service and also digital data support.
Alexander Wang Member
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Dial-up Internet connections supported up 56 Kbps.

PSTN vs ISDN

Integrated Services Digital Network (ISDN) was developed as an alternative to PSTN that provides both telephone service and also digital data support.
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ISDN gained popularity in larger businesses due to its ability to support large numbers of phones with low installation costs. It was also offered to consumers as an alternative form of Internet access supporting 128 Kbps. <h2> PSTN vs VoIP </h2> Voice over Internet Protocol (VoIP), sometimes also called&nbsp;IP telephony,&nbsp;was designed to replace the circuit-switched phone services of both PSTN and ISDN with a packet switched system based on Internet Protocol (IP).
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ISDN gained popularity in larger businesses due to its ability to support large numbers of phones with low installation costs. It was also offered to consumers as an alternative form of Internet access supporting 128 Kbps.

PSTN vs VoIP

Voice over Internet Protocol (VoIP), sometimes also called IP telephony, was designed to replace the circuit-switched phone services of both PSTN and ISDN with a packet switched system based on Internet Protocol (IP).
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The first generations of VoIP services suffered from reliability and sound quality issues but have gradually improved over time. Was this page helpful?
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The first generations of VoIP services suffered from reliability and sound quality issues but have gradually improved over time. Was this page helpful?
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