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Distributed Queue Dual Bus
Data
link layer communication protocol, specified in the IEEE 802.6 standard,
designed for use in MANs. DQDB, which permits multiple systems to interconnect
using two unidirectional logical buses, is an open standard that is designed
for compatibility with carrier transmission standards, and is aligned with
emerging standards for BISDN. SIP (SMDS Interface Protocol) is based on DQDB.
See also MAN.
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