Microsoft s.r.o., Eltodo Centrum, Novodvorská 1010/14B, 142 01 Praha 4
Tel.: +420 261 197 111
Fax: +420 261 197 100
http://www.microsoft.com



Brooktrout, Inc. 250 First Avenue, Needham, MA 02494, U.S.A.
Tel.: +1 781 449-4100
Fax: +1 781 449-9009
http://www.brooktrout.com



Siemens, s.r.o, Evropská 33a, 160 00 Praha 6
Tel.: +420 233 033 303
Fax: +420 233 031 112
http://www.siemens.com



Ericsson spol. s r.o., Sokolovská 79 čp. 192, 186 00 Praha 8
Tel.: +420 224 000 111
Fax: +420 224 000 333
http://www.ericsson.com



Eicon Networks - Headquarters, 9800 Cavendish Boulevard, Montreal, Quebec, H4M 2V9, Canada
Tel.: +514 745-5500
Fax: +514 745-5588
http://www.eicon.com