BORSUMY Kommunikations-Systeme Handels GmbH: Telephone systems, analog and digital (ISDN), Communication equipment and systems, Information and Communication Technology; ELMEG GmbH & Co. KG Kommunikationstechnik: Telephone systems, analog and digital (ISDN), Information and Communication Technology, Communication equipment and systems; Hofer Nachrichtentechnik GmbH & Co. KG: Telephone systems, analog and digital (ISDN), Communication equipment and systems, Equipment and furnishing of and services for hospitals and sanatoria; Multiton Elektronik GmbH: Telephone systems, analog and digital (ISDN), Communication equipment and systems, Staff call systems. Paging systems; S. Siedle & Söhne Telefon- und Telegrafenwerke OHG: Telephone systems, analog and digital (ISDN), Communication equipment and systems, Information and Communication Technology; ...