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Article #435Re: ISDN-Modem ? TA ?
From: thomas zippo
Date: Tue, 09 Jun 1998 00:00
Date: Tue, 09 Jun 1998 00:00
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Pierrot HERITIER wrote: > What's the difference between digital and analog connections ? on analog connections data transfers are modulated and demodulated, therefore you need a modem (MOdulator/DEModulater). on digital lines you don't need a modem but a terminal adaptor (ta), because the (digital) data don't need to be modulated for transport. > What's the reason why I should buy a modem for both connection types ? if you've got isdn connectivity and want to use it for data transfers, i strongly recommend a digital device (ta) to be used.the main reason to get a device supporting the analog AND the digital protocol, is to ensure fax connectivity with your computing system. a typical (analog) modem supports the following standards: v.34, v.42 or v.90; these protocols support connections with fax devices, whereas the typical isdn protocols x.75 and v.120 don't support connections of that type (though i hear it can be emulated on some systems - dunno =) ). > Is one 'better' than the other ? whatever suits your needs (see my recommendation above). if you've already got a fax device or don't need any, you go fine with a simple ta, such as zyxel omni.net or zyxel omni ta 128. you can also buy a modem for fax/voice later on ... > THanks you're welcomethomas
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f8cd8,c81c30a868959cf1 X-Google-Attributes: gidf8cd8,public From: thomas zippo <meringo@gmx.net> Subject: Re: ISDN-Modem ? TA ? Date: 1998/06/09 Message-ID: <357C6F7F.8F6D2B50@gmx.net> X-Deja-AN: 360838482 Content-Transfer-Encoding: 7bit References: <35752245.17666012@news.supernews.com> <6ldnpe$1f5$1@news.eunet.ch> <357aa507.299328@news.supernews.com> Mime-Version: 1.0 To: Pierrot HERITIER <pher@royal.net> Content-Type: text/plain; charset=us-ascii Organization: [o] Newsgroups: ch.network