Motorola MT2070 Specifications Page 207

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Glossary - 11
TFTP. (Trivial File Transfer Protocol) A version of the TCP/IP FTP (File Transfer Protocol) protocol that has no directory or
password capability. It is the protocol used for upgrading firmware, downloading software and remote booting of diskless
devices.
Tolerance. Allowable deviation from the nominal bar or space width.
Transmission Control Protocol/Internet Protocol. See TCP/IP.
Trivial File Transfer Protocol. See TFTP.
U
UDP. User Datagram Protocol. A protocol within the IP protocol suite that is used in place of TCP when a reliable delivery
is not required. For example, UDP is used for real-time audio and video traffic where lost packets are simply ignored,
because there is no time to retransmit. If UDP is used and a reliable delivery is required, packet sequence checking and
error notification must be written into the applications.
UPC. Universal Product Code. A relatively complex numeric symbology. Each character consists of two bars and two
spaces, each of which is any of four widths. The standard symbology for retail food packages in the United States.
V
Visible Laser Diode (VLD). A solid state device which produces visible laser light.
W
WAN. Wide-Area Network. A radio network that supports data communication beyond a local area. That is, information can
be sent across a city, state, or even nationwide.
Warm Boot. A warm boot restarts the device by closing all running programs. All data that is not saved to flash memory is
lost.
Wireless Local Area Network (WLAN). See LAN.
Wireless Wide Area Network (WWAN). See WAN.
WNMP. (Wireless Network Management Protocol) This is Symbol’s proprietary MAC layer protocol used for inter access
point communication and other MAC layer communication.
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