What is POTS?

POTS, which stands for Plain Old Telephone Service, is a traditional form of landline phone service. Subscribers are assigned a phone number that people can call.

Another term for POTS is analog telephone because the service uses analog signal transmission. It connects users through a subscriber loop, which contains the copper wires that connect a central switch office to homes or businesses.


Plain Old Telephone Service offers duplex communication

POTS is a duplex, or bidirectional, communication system. Users are connected in a way that allows them to communicate in either direction. POTS allows for two people to speak and hear at the same time.


The beginning of Plain Old Telephone Service

When the public landline telephone system was introduced in the 1800s, POTS began to rise in popularity. More than 100 years later, POTS is still a common type of voice communication for homes and businesses throughout the world.


Subscribers can rely on Plain Old Telephone Service

POTS provides users with a reliable phone service. Unlike mobile phones, POTS offers subscribers consistent service. Homes and businesses will typically get service at all times – even during power outages. The central switch offices are backed by batteries, so service outage is extremely uncommon.


The science behind Plain Old Telephone Service

How does POTS work? It’s powered by direct current with, on average, 48 volts coming from massive batteries located in the central switch office. From there, the subscriber loop connects to homes and businesses and powers them with 300 ohms of electricity. This allows for communication to be transmitted via analog signal, giving subscribers a landline phone.


More than a landline phone

Today’s traditional phone service has been upgraded by many unique calling features. Most POTS offer 3-way calling, voicemail, caller ID and more. These modern features transform the traditional landline phone into an advanced one.