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- Xref: sparky comp.dcom.modems:13252 biz.comp.telebit:913
- Path: sparky!uunet!ralvm29.VNET.IBM.COM
- From: Petty@ralvm29.VNET.IBM.COM (Jack Petty)
- Message-ID: <19920911.045444.75@almaden.ibm.com>
- Date: Fri, 11 Sep 92 07:44:22 EDT
- Newsgroups: comp.dcom.modems,biz.comp.telebit
- Subject: Re: PEP vs. V.32bis w/ V.42bis for international connections
- Disclaimer: This posting represents the poster's views, not those of IBM
- News-Software: UReply 3.0
- References: <0105015D.cvqr6b@phngnc.Phonogenic.COM>
- <navn0
- Lines: 12
-
- Wolfgang Henke writes:
- >
- >If you do it with a V.32/V.32bis modem, then consider those speeds which
- >require the least signal-to-noise. V.32 at a fallback speed of 4800 bps
- >requires only 16 dbm or so, less than other speeds or protocols.
- >
- I find 7200 bps more robust against some impairments than 4800 bps so
- I recommend trying 7200 bps before 4800 if the modem offers 7200.
- (The reason why 7200 can be more robust is because it has trellis coding
- which 4800 bps does not).
-
- Jack Petty
-