Hi,

I had a look at the berry typescript and created a tetex typescript:

type-tetex.tex

%% do not use :) except for experiments
%% Patrick Gundlach
%% Last Change: Thu Apr  4 19:11:38 2002

\starttypescript [tetex] [ec]
\definefontsynonym [ec-utmr8a]                 [ptmr8t]
\definefontsynonym [ec-utmri8a]                [ptmri8t]
\definefontsynonym [ec-utmb8a]                 [ptmb8t]
\definefontsynonym [ec-utmbi8a]                [ptmbi8t]
\definefontsynonym [ec-utmr8a-slanted-167]     [ptmro8t]
\definefontsynonym [ec-utmb8a-slanted-167]     [ptmbo8t]
\stoptypescript

this is my testfile:

\setupencoding[default=ec]
\usetypescriptfile[type-tetex]
\usetypescript[tetex][ec]
\definetypeface[times]    [rm][serif][times]   [default][encoding=ec]
\starttext
 \switchtobodyfont[times, 10pt]  times \showcharacters  \par
\stoptext

It switches to times, but the encoding is messed up.

-- 
Viele Grüße, 

    Patrick Gundlach