Motorola MC50 Specifications Page 168

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1 - 12 MC50 with Windows
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Mobile 5.0 Integrator Guide
widely used for real-time voice and video transmissions where erroneous packets are not retransmitted. IP
provides the routing mechanism. TCP/IP is a routable protocol, which means that all messages contain not
only the address of the destination station, but the address of a destination network. This allows TCP/IP
messages to be sent to multiple networks within an organization or around the world, hence its use in the
worldwide Internet. Every client and server in a TCP/IP network requires an IP address, which is either
permanently assigned or dynamically assigned at startup.
Telnet. A terminal emulation protocol commonly used on the Internet and TCP/IP-based networks. It allows a
user at a terminal or computer to log onto a remote device and run a program.
Terminal. See Mobile Computer.
Terminal Emulation. A “terminal emulation” emulates a character-based mainframe session on a remote
non-mainframe terminal, including all display features, commands and function keys. The MC9000 Series
supports Terminal Emulations in 3270, 5250 and VT220.
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.
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