Table E-3: European Digital Hierarchy: E-Carrier

E-carrier Level

Data Rate (Mbps)

Number of 64 kbps Channels (DS-0s)

Number of E-1s

E-1

2.048

30

1

E-2

8.448

120

4

E-3

34.368

480

16

E-4

139.268

1920

64

E-5

565.148

7680

256

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• Universal International Freephone Number (UIFN)
• Universal Mobile Telecommunications System (UMTS)
• Universal Plug and Play (UPnP)
• universal serial bus (USB)
• universal service
• Universal Service Administrative Company (USAC)
• Universal Service Fund (USF)
• University Corporation for Advanced Internet Development (UCAID)
• UNIX
• Unlicensed Mobile Access (UMA)
• Unlicensed National Information Infrastructure (U-NII)
• unshielded twisted pair (UTP)
• unsolicited grant service (UGS)
• unspecified bit rate (UBR)
• unsponsored domain
• UN (United Nations)
• update
• update
• upgrade
• upgrade
• uplink
• upload
• UPnP (Universal Plug and Play)
• upstream
• UPS (Uninterruptible Power Supply)