Glossary.

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U
UMTS (Universal Mobile Telecommunications System)

Third-generation international mobile communications standard that unites mobile multimedia and telematics services in the frequency spectrum of 2 GHz.

UNESCO

United Nations Educational, Scientific and Cultural Organization.

Upstream

Upstream  describes the data rate available for data streams from customers to the Telekom sites.

User ID

A user ID uniquely identifies an individual on a computer or other network device.