Axxius 800 User Manual

Glossary - 14 Axxius 800 - Release 2.2
Glossary
Network Address Translation (NAT)
Network
Address
Translation
(NAT)
An Internet standard that enables a local-area network (LAN) to use one
set of IP addresses for internal traffic and a second set of addresses for
external traffic. A NAT box located where the LAN meets the Internet
makes all necessary IP address translations.
OOS Out of Service.
OCU-DP Office Channel Unit, Data Port. A channel bank unit used to interface
between the channel bank and a customer’s DDS, DSU or DSU.
P-bit Coding
Violation (PCV)
For all DS3 applications, a coding violation error event is a P-bit Parity
Error event. A P-bit Parity Error event is the occurrence of a received P-
bit code on the DS3 M-frame that is not identical to the corresponding
locally-calculated code.
P-bit Errored
Seconds (PES)
A PES is a second with one or more PCVs OR one or more Out of Frame
defects OR a detected incoming AIS. This gauge is not incremented
when UASs are counted.
P-bit Severely
Errored
Seconds (PSES)
A PSES is a second with 44 or more PCVs OR one or more Out of Frame
defects OR a detected incoming AIS. This gauge is not incremented
when UASs are counted.
packet A unit of data sent across a network. When a large block of data is to be
sent over a network, it is broken up into several packets, sent, and the
reassembled at the other end. The exact layout of an individual packet is
determined by the protocol and network architecture being used.
Packet InterNet
Grouper
(PING)
PING is a program used to test whether a particular network destination
on the Internet is online (i.e. working) by repeatedly bouncing a "signal"
off a specified address and seeing how long that signal takes to complete
the round trip. No return signal - site is down or unreachable. Portion is
returned - trouble with the connection.