plain old telephone service

Hello Girls via ATT women phone operators WWI

AT&T celebrates the Hello Girls’ Congressional Gold Medal

A specific set of human operators known as the Hello Girls were a group of AT&T trainees that played a critical role in supporting the American Expeditionary Forces.

Fierce Network Newsroom Mar 25, 2025 9:37am

Cisco, Avaya retain dominant PBX market share

Mar 16, 2018 1:31pm

Cincinnati Bell says it's not discontinuing POTS

Jan 10, 2017 11:34am

AT&T to shut down 13 legacy services

Dec 21, 2016 10:44am

Verizon to grandfather TDM voice, data services in Northeast

Sep 27, 2016 11:15am