Glossary

Unified Communications as a Service (UCaaS)
Unified Communications (UC)
Unified Messaging System (UMS)
Uniform Resource Identifier (URI)
Uniform Resource Locator (URL)
Universal Call Distributor (UCD)
Universal Mobile Telecommunications System (UMTS)
Universal Service
Universal Subscriber Identity Module (USIM)
Universal Terrestrial Radio Access Network (UTRAN)
User Agent (UA)
User Datagram Protocol (UDP)
User Equipment (UE)
User Plane