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A "fixed" HSU remains in one location, as contrasted with a nomadic or mobile
HSU, which does not remain in one location.
GPS Hub Site Synchronization.
Generic Routing Encapsulation. A communication protocol used to establish a
direct, point‐to‐point connection
between network nodes. GRE lets two peers share data they wouldn't be able
to share over the public network itself.
A virtual point‐to‐point connection between two networks, using the GRE
protocol to carry this out.
High-capacity Base Station. Same as a BS.
High-capacity Mobility (subscriber) Unit. Similar to an HSU, but can be mobile.
Hub Sync Client: When using Hub Site Synchronization, one ODU is a master
(generates the sync pulses), and the other ODUs are clients.
Hub Sync Master: When using Hub Site Synchronization, one ODU is a
master (generates the sync pulses), and the other ODUs are clients.
High-capacity Subscriber Unit. Same as an SU.
Internet Group Management Protocol.
Integrated Synchronization Unit: A network device that pro‐
vides a synchronization signal to underground HBSs.
Message digest algorithm: An authentication type for
SNMPv3 connections.
Multiple Device Learning.
Multiple In, Multiple Out: A technique by which the capacity of a radio link is
increased using multiple transmitting and receiving antennas, transmitting a
different signal on all antennas.