[2] Described in more commercial terms, PCS is a generation of wireless cellular-phone technology, that combines a range of features and services surpassing those available in analogue- and first-generation (2G) digital-cellular phone systems, providing a user with an all-in-one wireless phone, paging, messaging, and data service.
[3] The International Telecommunication Union (ITU) describes personal communications services as a component of the IMT-2000 (3G) standard.
[5] This frequency band was designated by the United States Federal Communications Commission (FCC) and Industry Canada to be used for new wireless services to alleviate capacity caps inherent in the original Advanced Mobile Phone System (AMPS) and Digital AMPS (D-AMPS) cellular networks in the '850 MHz' band (specifically 814–894 MHz).
the GSM radio interface network equipment to Omnipoint Communications in January 2000.
The comparable technology in the context of GSM is GSM-1800, also known as "Digital Cellular System" (DCS).