Service, assembly, repair and sale of branch telephone exchanges, pbú, GSM gateways, door communicators, doormen, telephones, headsets, home audio and video telephones, contactless door openers and other telecommunications equipment, telephone wiring, structured cabling. Exchanges: Panasonic, 2N Telekomunikace, Netstar, Ateus Omega, Omega Lite, Netcom, Ateus, Alcatel, Siemens, Hipath, Hicom, Atlantis, Nexpan, Alphatel, T-Line, CT-Line, CC-Line, C-Line, Ericsson, Auerswald, Commander basic, Compact, Tina, Partner, Merlin Legend,