On 9/14/2009, Chris Wells wrote:
What is the definition of a telecommunication port relative to emission
testing?
I understand it to be a public system as in our classic telephone
system.
Would a special purpose RS485 system fit this description?
Hi Chris:
I believe there are several versions of EN 55022 that are in various stages of
phase-in and phase-out per the Official Journal. I can't recall what the
details are.
However, the 1998 version of EN 55022 that I have readily at hand contains the
following definition of "Telecommunications Ports" in clause 3.6:
"Ports which are intended to be connected to telecommunications networks (eg,
public switched telecommunication networks, integrated services digital
networks), local area networks (Ethernet, Token Ring) and similar networks."
So, by this definition, a telecommunications network port does not necessarily
have to connect to outside lines. Conventional Ethernet LANs are considered
to be "telecommunication ports" within the context of this standard.
Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848 (USA)
[email protected]
http://www.randolph-telecom.com <http://www.randolph-telecom.com/>
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