
Glossary
AMI Alternate mark inversion. bps Bits per second.
CEPT European Conference of Postal and Telecommunications Administrations. CSU channel service unit.
CPU central processing unit.
DSU Data Service Unit.
E1 European equivalent of T1.
HDLC
MHz MegaHertz.
PLL
PPP
SDLC Synchronous Data Link Control.
SNA System Network Architecture.
T1 A communications service providing
WAN Wide area network.
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