The last definition in CISPR 22 is:
3.6
telecommunications/network port
point of connection for voice, data and signalling transfers intended to
interconnect widelydispersed
systems via such means as direct connection to multi-user telecommunications
networks (e.g. public switched telecommunications networks (PSTN) integrated
services digital
networks (ISDN), x-type digital subscriber lines (xDSL), etc.), local area
networks (e.g.
Ethernet, Token Ring, etc.) and similar networks
NOTE A port generally intended for interconnection of components of an ITE
system under test (e.g. RS-232,
IEEE Standard 1284 (parallel printer), Universal Serial Bus (USB), IEEE
Standard 1394 ("Fire Wire"), etc.) and used
in accordance with its functional specifications (e.g. for the maximum length
of cable connected to it), is not
considered to be a telecommunications/network port under this definition.A ethernet interface is a telecommunication port if the interface is a real ethernet interface in line with IEEE standards, there is no limitation on the lenght of cable. The questions is not on the number of Equipment attacched to the network but on the lenght of the wire/network. Ciao paolo _________________________________________________ Paolo Gemma Siemens Mobile Communications S.p.A. SMC PG MW ST EMC & Safety SS Padana sup. KM 158 20060 Cassina de' Pecchi (MI) Italy phone +39 02 9526 6587 fax +39 02 9526 6375 mobile +39 348 3690185 e-mail [email protected] _________________________________________________ > -----Messaggio originale----- > Da: [email protected] > [mailto:[email protected]] Per conto di > [email protected] > Inviato: martedì 23 novembre 2004 23.40 > A: [email protected] > Oggetto: Definition of Telecommunication port > > > In EN55022 / CISPR 22 the definition of a telecommunication port is: > > "Ports which are intended to be connected to > telecommunication networks (e.g. public switched > telecommunication networks, integrated digital networks), > local area networks (e.g. Ethernet, Token Ring) and similar networks". > > We have an ITE with an Ethernet port to communicate with a PC > or many PCs. Do we here talk about an Ethernet LAN and > therefore is our Ethernet port classified as a > telecommunication port? Intended use for our equipment is for > consumer and Small Office, Home Office (SOHO). > > The reason for asking is that conducted emission and surge > apply for telecommunication port under the standard EN 301 489-1. > > Thanks. > > Regards > Amund Westin, > Oslo / Norway > > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society > emc-pstc discussion list. Website: http://www.ieee-pses.org/ > > To post a message to the list, send your e-mail to [email protected] > > Instructions: > http://listserv.ieee.org/listserv/request/user> -guide.html > > > List rules: > http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > > Ron Pickard: [email protected] > Scott Douglas [email protected] > > For policy questions, send mail to: > > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: [email protected] Scott Douglas [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
