Le vendredi 4 janvier 2008, vous avez écrit :
> On Jan 4, 2008 12:25 PM, Yvon Henel <yvon.henel@orange.fr> wrote:
> You need to provide tha tfm file name, not pfb, 
I thought so (for TeX was complaining about a missing tfm) but failed to see 
how exactly. Thanks awfully.
> but there already 
> exists a module which does that.
>
> \usesymbols[mvs]
> \setupsymbolset[martinvogel 2]
> \symbol[Telephone]
>
> See and the corrosponding source file (symb-mvs.tex)
>     http://wiki.contextgarden.net/Symbols/mvs

Thanks a lot. There is some discrepancies between the said module and my 
TeXlive (2007) distribution but I've succeeded in using "it".
For those who could be interrested, I've done thus:
copy symb-mvs.tex to symb-mvs2.tex in my texmf-local/tex/context
inside this copy
change 
\loadmapfile[original-base.map] into 
\loadmapfile[marvosym.map]
and
change 
\definefontsynonym [MartinVogel] [fmvr8x] into 
\definefontsynonym [MartinVogel] [umvs]

don't forget to texhash
and it works!

Thanks a lot.

-- 
Yvon Henel