The adapter would carry the burden not the Ethernet port. 10/100
Ethernet isn't really suitable for building to building communications
because of drive length limitations. That would be done with fiber, which
can be 70 km's with the new optical transceivers.
However, if you are converting a port to hook to the Teleco lines
then that little rascal will have to have all of the FCC part 68 stuff, and
possible NEBS stuff depending on where its being used.
By the way I am really curious what kind of box does this
conversion. As soon as you hook to the phone lines there are other things
that are mandated such as signal on/off times that effect the telephone
companies ability to proper bill the customer, along with a host of on/off
hook impedances, and the ability to reach 911 and report addresses et
cetera. Ethernet ports aren't typically set up to do this kind of function.
Gary
-----Original Message-----
From: Dick Grobner [mailto:[email protected]]
Sent: Friday, July 14, 2000 7:07 AM
To: IEEE EMC-PSTC E-Mail Forum (E-mail)
Subject: Telecom Ports
Good Day Forum Members
I have a very similar question that Barry Ma presented on 7-13. It regarded
a Ethernet port on test equipment. His question was as follows:
1. A phone line port has to comply with related regulations in Telecom
world. In my recollection, PC industry just added an Immunity requirement to
the phone line port. (It is included in EN55024?) But Ethernet can be
converted to phone line through an adapter. Is there a similar immunity
requirement for the Ethernet port in test equipment? If not, should it be
added to EN61326?
My dilemma is that my company "inherited" a piece of equipment via an
earlier acquisition. On this piece of equipment they incorporated an RJ-11
telecom jack. Over this jack they are running power (+12V & pwr gnd) from a
remote battery pack and RS-232 (Tx & Rx)comm which terminates to a PC. Can
anyone provide me with some insight with regards to EMI/RFI requirements and
device safety (I have somewhat of a handle on the safety side - but welcome
other opinions!). None of these four lines have any type of safety (over
current/voltage) protection nor any EMI filtering, etc. If you can provide
some insight or reference to required standards I would appreciate it!!!!
Thank You (in advance)
Dick Grobner
Compliance Engineering
Medical Graphics Corporation
350 Oak Grove Parkway
St Paul, MN 55127
651-766-3395
651-484-8941 (fax)
[email protected]
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