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Article #477

Re: IC to isolate device from telephone line?

#477
From: J. Jonas
Date: Wed, 04 Nov 1992 19:14
26 lines
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>In article <1992Nov3.002007.3458@netcom.com> kehoe@netcom.com
>(Thomas David Kehoe) writes:
>>I heard that someone, maybe Motorola, makes a chip
>>that isolates devices from telephone lines, allowing
>>a device that has not been certified under FCC Part 68
>>to connect to the network.
>
In article <1992Nov3.234141.6903@kodak.kodak.com> ornitz@kodak.kodak.com
	(Barry Ornitz) writes:
>There are modules made by companies like Cermetek that SIMPLIFY getting Part
>68 certification but they do NOT eliminate the process.  Face the fact that
>anything connected to the telephone lines directly must be certified.

Huh?  I read in the Cermetek DAA data sheets that the FCC part 68
certification was transferrable to whatever equipment used
the DAA for the phone interface.
If the DAA is robust, even shorting it or plugging the output
into the wall outlet won't hurt the phone line.  As long as the
phone wires go directly to the DAA, you're isolated, safe and certified.

As to FCC part B certification, that's different.
(that's EMI interference/transmission levels).
-- 
Jeffrey Jonas

jeffj@panix.com
Technical Details
Message-ID: <1992Nov4.191447.16186@krfiny.uucp>
Path: arc1-ca.pugleaf.net!sparky!uunet!krfiny!jeffj
References: <1992Nov3.002007.3458@netcom.com> <1992Nov3.234141.6903@kodak.kodak.com>

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Newsgroups: sci.electronics
Path: arc1-ca.pugleaf.net!sparky!uunet!krfiny!jeffj
From: jeffj@krfiny.uucp (J. Jonas)
Subject: Re: IC to isolate device from telephone line?
Message-ID: <1992Nov4.191447.16186@krfiny.uucp>
Summary: I thought that ther certification was transferrable
Keywords: FCC, certification, Part 68
Organization: Jeff's house of computer pieces
References: <1992Nov3.002007.3458@netcom.com> <1992Nov3.234141.6903@kodak.kodak.com>
Date: Wed, 4 Nov 1992 19:14:47 GMT
Lines: 26