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General information, initial consulting, technical questions, project development

Dr. Heinrich Kersten 
Phone: +49-228-9841-110 
Fax: +49-228-9841-88160 
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heinrich.kersten@t-systems.com
 
 
Sales, commercial issues, individual offers

Gerd Enste 
Phone: +49-228-9841-117 
Fax: +49-228-9841-60 
gerd.enste@t-systems.com