GatesAir Intraplex NetXpress, Installation And Operation Manual

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GatesAir, Inc. 7-1
Intraplex Products
Section 7 – Glossary
Reference Description
ABCD Signaling Relative to the NetXpress system, refers to ABCD voice channel signaling in
T1/E1 circuits and existing Intraplex voice channel modules. ABCD is also
known as E & M (ear & mouth) signaling.
AC Electrical current that reverses direction, usually many times per second
ACO Alarm Cut Off device; the green light on front of a shelf indicates the alarm
cut-off is active. It is reset by the NIM-1 when the alarm condition has been
cleared (ACO is triggered by the switch located on the NIM-1 front panel).
Active NIM Role of a NIM that is currently providing operational services, which can be
either the Primary or Secondary NIM.
AES/EBU Audio Engineering Society and European Broadcast Union digital format
standard for audio modules.
Alarm Status NetXpress shelf alarm status conditions:
Major - Red light, indicates alarm condition exists (for example, stream loss,
signal failure, loss of frame, power failure if redundant supply is installed)
Minor - Yellow light, indicates that alert condition exists (for example, packet
loss, network delay)
Normal - Green light, indicates power is on and the NetXpress shelf is
operating normally
ANSI TR54016 FDL American National Standards Institution formatted Facilities Data Link
reporting criterion, a form of statistical measurement.
ARD Automatic RingDown; a private line that connects a station instrument in one
location to one in another location with automatic two-way signaling.
ARP Address Resolution Protocol; primarily used to translate IP addresses into
Ethernet MAC addresses, ARP is the method of finding a host’s hardware
address when only the network layer address is known. ARP is also used for
IP over other LAN technologies.
ASN.1 Abstract Syntax Notation.1; an international data classification standard used
in the NetXpress management information database.
ASCII American Standard Code for Information Interchange; a built-in binary code
for representing characters in most computers.
ATT T1.403 FDL AT&T formatted Facilities Data Link reporting criterion, a form of statistical
measurement.
BES Bursty Errored Seconds; a count of one-second intervals in which more than
one but less than 320 CRC error events, used as an interval statistic.
Boot ROM The memory chip on the NIM-1 containing an executable program capable of
bringing the system up to a state where the NIM-1 application software can
be loaded onto the processor and ran.
Buffer A packet buffer is memory space set aside for storing a packet awaiting
transmission or reception over a network.
CAM Channel Access Module (one or more, up to 4) for video, voice over IP, data,
and various audio applications. For streaming purposes, each CAM has its own
100Mbps spoke on the internal high-speed bus. Slots 13, 14, 15, and 16 are
available for slot insertion, provided that slot 15 is not used for NIM
redundancy.