User Guide

PMP 450 Planning Guide Glossary
Term Definition
CIR Committed Information Rate. For an SM or specified group of SMs, a level of
bandwidth that can be guaranteed to never fall below a specified minimum (unless
oversubscribed). In the Cambium implementation, this is controlled by the Low
Priority Uplink CIR, Low Priority Downlink CIR, High Priority Uplink CIR, and
High Priority Downlink CIR parameters.
CLIP Cassegrain Lens for Improved Performance
Cluster
Management
Module
Module that provides power, GPS timing, and networking connections for an AP
cluster. Also known as CMM.
CMM Cluster Management Module. A module that provides power, GPS timing, and
networking connections for an Access Point cluster.
CodePoint See DiffServ.
Color Code Field Module parameter that identifies the other modules with which communication is
allowed. The range of valid values is 0 to 255.
Community String
Field
Control string that allows a network management station to access MIB
information about the module.
Country Code Unique identifier that helps distinguish the particular transmits and receives rules
for one country from another country in that same region (see Region Code).
CRCError Field This field displays how many CRC errors occurred on the Ethernet controller.
Data Encryption
Standard
Over-the-air link option that uses secret 56-bit keys and 8 parity bits. Data
Encryption Standard (DES) performs a series of bit permutations, substitutions,
and recombination operations on blocks of data.
Demilitarized Zone Internet Protocol area outside of a firewall. Defined in RFC 2647. See
http://www.faqs.org/rfcs/rfc2647.html
.
DES Data Encryption Standard. An over-the-air link option that uses secret 56-bit keys
and 8 parity bits. DES performs a series of bit permutations, substitutions, and
recombination operations on blocks of data.
Desensed Received an undesired signal that was strong enough to make the module
insensitive to the desired signal.
DFS See Dynamic Frequency Selection
DHCP Dynamic Host Configuration Protocol, defined in RFC 2131. Protocol that enables
a device to be assigned a new IP address and TCP/IP parameters, including a
default gateway, whenever the device reboots. Thus DHCP reduces configuration
time, conserves IP addresses, and allows modules to be moved to a different
network within the system. See http://www.faqs.org/rfcs/rfc2131.html
. See also
Static IP Address Assignment.
Field Code Changed
pmp-0047 (March 2014)
III