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<TITLE>Managing Multivendor Networks -- Appendix A -- Glossary of Terms</TITLE>
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<FONT COLOR="#000077">Managing Multivendor Networks</FONT></H1>
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<H1><FONT COLOR="#000077">Glossary of Terms</FONT></H1>
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<TD VALIGN="TOP"><A HREF="#Heading1">Numerics</A><BR>
<A HREF="#Heading2">A</A><BR>
<A HREF="#Heading3">B</A><BR>
<A HREF="#Heading4">C</A><BR>
<A HREF="#Heading5">D</A><BR>
<A HREF="#Heading6">E</A><BR>
<A HREF="#Heading7">F</A><BR>
<A HREF="#Heading8">G</A></TD>
<TD VALIGN="TOP"><A HREF="#Heading9">H</A><BR>
<A HREF="#Heading10">I</A><BR>
<A HREF="#Heading11">J</A><BR>
<A HREF="#Heading12">K</A><BR>
<A HREF="#Heading13">L</A><A HREF="#Heading14">M</A><BR>
<A HREF="#Heading15">N</A><BR>
<A HREF="#Heading16">O</A><BR>
<A HREF="#Heading17">P</A><BR>
<A HREF="#Heading18">Q</A></TD>
<TD VALIGN="TOP"><A HREF="#Heading19">R</A><BR>
<A HREF="#Heading20">S</A><BR>
<A HREF="#Heading21">T</A><BR>
<A HREF="#Heading22">U</A><BR>
<A HREF="#Heading23">V</A><BR>
<A HREF="#Heading24">W</A><BR>
<A HREF="#Heading25">X</A><BR>
<A HREF="#Heading26">Y</A></TD>
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<H2><A NAME="Heading1"></A><FONT COLOR="#000077">Numerics</FONT></H2>
<P><B>10BASE2  </B>A specification for thin coaxial cable often used with
the IEEE 802.3 LAN standard.</P>
<P><B>10BASE5  </B>A specification for thick backbone cable often used
with the IEEE 802.3 LAN standard.</P>
<P><B>10BASET  </B>A specification for twisted-pair cable often used with
the IEEE 802.3 and 802.5 LAN standards.</P>
<P><B>100BASET  </B>Also known as Fast Ethernet. An extension of the IEEE
802.3 LAN standard that boosts the speed of an Ethernet network from 10 Mbps to 100
Mbps. The three layers of 100BASET include 100BASE-TX, supporting Category 5 UTP
and STP cabling; 100BASE-T4, supporting Category 3, 4 and 5 UTP cabling; and 100BASE-FX,
supporting two-strand fiber optic cable.</P>
<P><B>20/20  </B>A VAX-based spreadsheet package developed by Access Technology
and often used in conjunction with Digital Equipment's ALL-IN-1. <I>See also</I>
ALL-IN-1.</P>
<P><B>360  </B><I>See</I> System/360.</P>
<P><B>370  </B><I>See</I> System/370.</P>
<P><B>390  </B><I>See</I> System/390.</P>
<P><B>802.2  </B><I>See</I> IEEE 802.2.</P>
<P><B>802.3  </B><I>See</I> IEEE 802.3.</P>
<P><B>802.4  </B><I>See</I> IEEE 802.4.</P>
<P><B>802.5  </B><I>See</I> IEEE 802.5.</P>
<P><B>2780/3780  </B>IBM Remote Job Entry (RJE) stations. This symmetrical
protocol is often used in the context of the IBM bisynchronous contention protocol
that directs the flow of activity between these RJE stations and the mainframe. It
is also frequently used to implement RJE from one type of computer to another. 2780/3780
stations are non-SNA devices. <I>See also</I> RJE.</P>
<P><B>3080  </B>An IBM System/370 mainframe.</P>
<P><B>3090  </B>An IBM System/370 mainframe.</P>
<P><B>3151  </B>An IBM ASCII workstation (for multivendor compatibility).</P>
<P><B>3164  </B>An IBM ASCII workstation (for multivendor compatibility).</P>
<P><B>3174  </B>IBM control unit for the 3270 workstation family. An SNA
Physical Unit (PU) Type 2. <I>See also</I> 3270, 3274 and 3276.</P>
<P><B>3178  </B>A 3270 workstation (LU 2). <I>See</I> 3270.</P>
<P><B>3179  </B>A 3270 color workstation (LU 2). <I>See</I> 3270.</P>
<P><B>3180  </B>A 5250 workstation (LU 7). <I>See</I> 5250.</P>
<P><B>3196  </B>A 5250 workstation (LU 7). <I>See</I> 5250.</P>
<P><B>3197  </B>A 5250 color workstation (LU 7). <I>See</I> 5250.</P>
<P><B>3262  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>3268  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>3270  </B>A family of IBM workstations and printers generally used
with IBM mainframes (9370, 4300, and 3090). Members of the 3270 family include the
3178 display station, 3179 color display station, 3278 display station, 3279 color
display station, 3287 printer, and others. These units interface with the 3174, 3274,
or 3276 control unit. In SNA terms, they are defined as Logical Unit (LU) Types 2
(3270 workstations) and Type 3 (3270 printers).</P>
<P><B>3274  </B>An IBM control unit for the 3270 workstation family. The
3274 connects one or more 3270 devices with a host computer via a communications
control node (3705, 3720, 3725 or 3745) or Integrated Communications Adapter. In
SNA terms, the IBM control unit is defined as a Physical Unit (PU) Type 2. <I>See
also</I> 3270, 3174, and 3276.</P>
<P><B>3276  </B>IBM control unit for the 3270 workstation family. The 3276
is a 3274 with a built-in terminal. Like the 3274, it is a Physical Unit (PU) Type
2 but also includes a Logical Unit (LU) Type 2. <I>See also</I> 3270, 3174 and 3274.</P>
<P><B>3277  </B>A 3270 workstation (LU 2). <I>See</I> 3270.</P>
<P><B>3278  </B>A 3270 workstation (LU 2). <I>See</I> 3270.</P>
<P><B>3279  </B>A 3270 color workstation (LU 2). <I>See</I> 3270.</P>
<P><B>3287  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>3289  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>3705  </B>An IBM communication control node. Interfaces the mainframe
to 3274 control units. In SNA, this is a Physical Unit (PU) Type 4. <I>See also</I>
3270, 3720, 3725, and 3745.</P>
<P><B>3720  </B>IBM communication control node. In SNA, a Physical Unit
(PU) Type 4 device. <I>See also</I> 3270, 3705, 3725, and 3745.</P>
<P><B>3725  </B>A later model of the IBM 3720 communications control node
and an SNA Physical Unit (PU) Type 4 device. <I>See also</I> 3270, 3705, 3720, and
3745.</P>
<P><B>3745  </B>An IBM communications control node. In SNA, a Physical
Unit (PU) Type 4 device. <I>See also</I> 3270, 3705, 3720, and 3725.</P>
<P><B>3770  </B>An IBM RJE workstation that supports a console, printers,
card readers, and card punches. The 3770 is similar to the 2780 and 3780 RJE workstations
in function but interacts with the host (mainframe) in a slightly different manner.
The 3770 is a Logical Unit (LU) Type 1 SNA device. <I>See also</I> RJE.</P>
<P><B>3780  </B><I>See</I> 2780/3780.</P>
<P><B>3812  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4210  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4214  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4224  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4225  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4234  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4245  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>4250  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>4300  </B>An IBM System/370 mainframe.</P>
<P><B>5210  </B>A 3270 printer (LU 3). <I>See</I> 3270.</P>
<P><B>5219  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>5224  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>5225  </B>A 5250 printer (LU 4). <I>See</I> 5250.</P>
<P><B>5250  </B>A family of IBM workstations and printers used with IBM's
mid-range computer line (AS/400, System/36, and System/38). Members of this family
include the 5251 display station, 5291 display station, 3197 color display station,
5256 printer, and others. These units interface with the 5294 or 5394 control unit.
The 5250 family is classified as an SNA Logical Unit (LU) Type 7 device for workstations
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