User Manual

PMP 450 Planning Guide Glossary
pmp-0047 (December 2012)
V
Term Definition
File Transfer
Protocol
Utility that transfers of files through TCP (Transport Control Protocol) between
computing devices that do not operate on the same platform. Defined in RFC 959. See
http://www.faqs.org/rfcs/rfc959.html
.
FPGA Field-programmable Gate Array. An array of logic, relational data, and wiring data that
is factory programmed and can be reprogrammed.
Frame Timing Pulse
Gated Field
Toggle parameter that prevents or allows the module to continue to propagate GPS
sync timing when the module no longer receives the timing.
Free Space Path
Loss
Signal attenuation that is naturally caused by atmospheric conditions and by the
distance between the antenna and the receiver.
Fresnel Zone Space in which no object should exist that can attenuate, diffract, or reflect a
transmitted signal before the signal reaches the target receiver.
FTP File Transfer Protocol, defined in RFC 959. Utility that transfers of files through TCP
(Transport Control Protocol) between computing devices that do not operate on the
same platform. See http://www.faqs.org/rfcs/rfc959.html
.
Global Positioning
System
Network of satellites that provides absolute time to networks on earth, which use the
time signal to synchronize transmission and reception cycles (to avoid interference) and
to provide reference for troubleshooting activities.
GPS Global Positioning System. A network of satellites that provides absolute time to
networks on earth, which use the time signal to synchronize transmission and reception
cycles (to avoid interference) and to provide reference for troubleshooting activities.
GPS/3 Third-from-left LED in the module. In the operating mode for an Access Point Module,
this LED is continuously lit as the module receives sync pulse. In the operating mode
for a Subscriber, this LED flashes on and off to indicate that the module is not
registered.
GUI Graphical user interface.
High-priority
Channel
Channel that supports low-latency traffic (such as Voice over IP) over low-latency
traffic (such as standard web traffic and file downloads). To recognize the latency
tolerance of traffic, this channel reads the IPv4 Type of Service DiffServ Control Point
(DSCP) bits. Enabling the high-priority channel reduces the maximum number of SMs
that can be served in the sector.
HTTP Hypertext Transfer Protocol, used to make the Internet resources available on the
World Wide Web. Defined in RFC 2068. See http://www.faqs.org/rfcs/rfc2068.html
.
ICMP Internet Control Message Protocols defined in RFC 792, used to identify Internet
Protocol (IP)-level problems and to allow IP links to be tested. See
http://www.faqs.org/rfcs/rfc792.html
.
iGPS The PMP 450 Access Point contains an internal GPS receiver (iGPS) which may be
enabled to synchronize transmit and receive cycles among all network APs utilizing
GPS synchronization (via CMM, UGPS, or iGPS).