\catcode`@=11
\expandafter\ifx\csname graph\endcsname\relax \alloc@4\box\chardef\insc@unt\graph\fi
\catcode`@=12
\setbox\graph=\vtop{%
  \baselineskip=0pt \lineskip=0pt \lineskiplimit=0pt
  \vbox to0pt{\hbox{%
    \special{pn 8}%
    \special{pa 312 624}%
    \special{pa 312 0}%
    \special{pa 1249 0}%
    \special{pa 1249 624}%
    \special{pa 312 624}%
    \special{fp}%
    \rlap{\kern  0.780in\lower 0.354in\hbox to 0pt{\hss TS-user\hss}}%
    \special{pa 780 624}%
    \special{pa 780 1562}%
    \special{fp}%
    \special{pa 312 2187}%
    \special{pa 312 1562}%
    \special{pa 1249 1562}%
    \special{pa 1249 2187}%
    \special{pa 312 2187}%
    \special{fp}%
    \rlap{\kern  0.780in\lower 1.833in\hbox to 0pt{\hss TS-provider\hss}}%
    \rlap{\kern  0.780in\lower 1.999in\hbox to 0pt{\hss (client)\hss}}%
    \special{pa 780 2187}%
    \special{pa 780 3124}%
    \special{fp}%
    \special{pa 3124 624}%
    \special{pa 3124 0}%
    \special{pa 4062 0}%
    \special{pa 4062 624}%
    \special{pa 3124 624}%
    \special{fp}%
    \rlap{\kern  3.593in\lower 0.354in\hbox to 0pt{\hss TS-user\hss}}%
    \special{pa 3593 624}%
    \special{pa 3593 1562}%
    \special{fp}%
    \special{pa 3124 2187}%
    \special{pa 3124 1562}%
    \special{pa 4062 1562}%
    \special{pa 4062 2187}%
    \special{pa 3124 2187}%
    \special{fp}%
    \rlap{\kern  3.593in\lower 1.833in\hbox to 0pt{\hss TS-provider\hss}}%
    \rlap{\kern  3.593in\lower 1.999in\hbox to 0pt{\hss (server)\hss}}%
    \special{pa 3593 2187}%
    \special{pa 3593 3124}%
    \special{fp}%
    \special{pa 0 1093}%
    \special{pa 4374 1093}%
    \special{da  0.050}%
    \rlap{\kern  4.062in\lower 1.135in\hbox to0pt{\begin{tabular}{c}TSAP interface\\ \cite{ISO.TP.Service}\end{tabular}\hss}}%
    \special{pa 0 2655}%
    \special{pa 4374 2655}%
    \special{da  0.050}%
    \rlap{\kern  4.062in\lower 2.697in\hbox to0pt{\begin{tabular}{c}TCP interface\\ \cite{TCP}\end{tabular}\hss}}%
    \rlap{\kern  2.187in\lower 1.833in\hbox to 0pt{\hss {\em magic box\/} protocol\hss}}%
    \rlap{\kern  2.187in\lower 1.999in\hbox to 0pt{\hss \hss}}%
    \special{pa 1249 1874}%
    \special{pa 3124 1874}%
    \special{da  0.050}%
    \special{pa 312 3749}%
    \special{pa 312 3124}%
    \special{pa 4062 3124}%
    \special{pa 4062 3749}%
    \special{pa 312 3749}%
    \special{fp}%
    \rlap{\kern  2.187in\lower 3.479in\hbox to 0pt{\hss The TCP\hss}}%
    \rlap{\kern  0.312in\lower 1.369in\hbox to 0pt{\hss OSI TSAP\ }}%
    \special{pa 312 1327}%
    \special{pa 718 1327}%
    \special{fp}%
    \special{pa 593 1358}%
    \special{pa 718 1327}%
    \special{fp}%
    \special{pa 593 1296}%
    \special{pa 718 1327}%
    \special{fp}%
    \rlap{\kern  0.312in\lower 2.463in\hbox to 0pt{\hss TCP port 102\ }}%
    \special{pa 312 2421}%
    \special{pa 718 2421}%
    \special{fp}%
    \special{pa 593 2452}%
    \special{pa 718 2421}%
    \special{fp}%
    \special{pa 593 2390}%
    \special{pa 718 2421}%
    \special{fp}%
    \kern  4.375in
  }\vss}%
  \kern  3.750in
}
