Cambium PTP 450, Configuration And User'S Manual

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PTP 450 Configuration and User Guide Notifications
6-50 pmp-0815 (August 2015)
Term Definition
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.
DiffServ Differentiated Services, consistent with RFC 2474. A byte in the
type of service (TOS) field of packets whose values correlates to the
channel on which the packet should be sent. The value is a numeric
code point. Cambium modules map each of 64 code points to values
of 0 through 7. Three of these code points have fixed values, and
the remaining 61 are settable. Values of 0 through 3 map to the
low-priority channel; 4 through 7 to the high-priority channel. The
mappings are the same as 802.1p VLAN priorities. (However,
configuring DiffServ does not automatically enable the VLAN
feature.) Among the settable parameters, the values are set in the
BHM for all downlinks within the sector and in the BHS for each
uplink.
Disable To turn off a feature in the module after both the feature activation
file has
activated the module to use the feature and the operator
has
enabled the feature in the module. See also Activate and
Enable.
DMZ Demilitarized Zone as defined in RFC 2647. An Internet Protocol
area outside of a firewall. See
http://www.faqs.org/rfcs/rfc2647.html .
Dynamic
Frequency
Selection
A requirement in certain countries and regions for systems to
detect
interference from other systems, notably radar systems, and to
avoid co-channel operation with these systems.
Dynamic Host
Configuration
Protocol See DHCP.