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Article #4580Re: australia
From: nichols
Date: Wed, 11 Apr 1990 05:33
Date: Wed, 11 Apr 1990 05:33
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I know that certifying a modem in Australia is a tricky process. One requirement our FCC (USA) imposes on modems for Part 68 approval is that they withstand a 1500-volt surge on the phone line without reflecting more than "x" joules of energy to the telephone network. In Australia, they test your modem with a 3000-volt jolt. Ouch! They must have *some* kind of lightning there! Another problem deals with which standard your modem complies. A CCITT standard transmission is more likely to work there than one of the Bell standards. My former company discovered that one of the frequencies used in a Bell 103J modem (300 bps FSK) would tell the central office equipment in England to hang up (disconnect) the line! Two excellent sources for international info on telecom are the test labs of "Dash, Strauss & Goodhue", somewhere in Massachussettes. as well as a magazine they publish called "Compliance Engineering." Have fun down under! markJ nichols@eola.ucf.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!crdgw1!ge-dab!tarpit!ucf-cs!eola!nicholsReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!rpi!crdgw1!ge-dab!tarpit!ucf-cs!eola!nichols From: nichols@eola.UCF.EDU Newsgroups: sci.electronics Subject: Re: australia Message-ID: <6900002@eola> Date: 11 Apr 90 05:33:00 GMT References: <832@torah.UUCP> Lines: 24 Nf-ID: #R:torah.UUCP:-83200:eola:6900002:000:973 Nf-From: eola.UCF.EDU!nichols Apr 11 01:33:00 1990