GLOSSARY D
AAL2
AAL5
ATM
attenuation
authentication
BER
bps
CBR
cell
The Institute of Electrical and Electronic Engineers (IEEE) 802.3 specification for Ethernet over thin coaxial cable.
ATM Adaptation Layer 2. Used for compressed voice and video that is intolerant of delay. This layer is used by xDSL technology.
ATM Adaptation Layer 5. AAL5 has been adopted by the ATM Forum from a Class of Service called High Speed Data transfer. It typically supports all types of data traffic. Originally designed to support TCP/IP.
Asynchronous Transfer Mode is a high bandwidth, low delay,
The dissipation of the power of a transmitted signal as it travels over copper wire, measured in decibels (dB).
Security feature offered through PAP and CHAP with PPP sessions.
Bit Error Rate is a measure of transmission quality. The ratio of error bits to the total number of bits transmitted.
Constant Bit Rate is a Service Class for the modem. It provides constant bit rate data with a timing relationship between the source and the destination. Also, a traffic class that carries a guaranteed constant bandwidth. Best suited for applications that require fixed bandwidth, such as uncompressed voice, video and circuit emulation. CBR is a Quality of Service class defined by the ATM Forum for ATM networks.
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