Essential requirements for terminal equipment intended for connection to 2-wire analogue speechband leased lines of the public telecommunications network— 24 стр.
Essential requirements for terminal equipment intended for connection to analogue baseband leased lines of the public telecommunications network— 20 стр.
Medical electrical equipment - Part 1: General requirements for basic safety and essential performance (IEC 60601-1:2005 + Cor.:2006 + Cor.:2007 + A1:2012) (english version)