mit den IT-Kenntnissen:
CCVP , CVOICE, Voice over IP, Cisco IP Communication Support Specialist, CCNA
SSCA (Voice over IP SIP Protokoll)
MCSA (Server 2003), MCITP (Server 2008), MCTS (Exchange Server 2007), MCTS (SCCM)
Switching, Routing , RAS-Lösungen, Internetanbindungen, TCP/IP
IP Telephony, Unified Communications, Cisco Call...