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- From: pollard@cucbs.chem.columbia.edu (Tom Pollard)
- Subject: Re: Modem cable myths
- In-Reply-To: eric@cse.ucsc.edu's message of 11 Jan 1993 05:22:46 GMT
- Message-ID: <POLLARD.93Jan11214912@cucbs.chem.columbia.edu>
- Sender: pollard@cucbs.chem.columbia.edu (Tom Pollard)
- Organization: Center for Biomolecular Simulation, Department of Chemistry,
- Columbia University
- References: <9301102225527419@waltham.columbus.oh.us> <1ir076INN7hv@darkstar.UCSC.EDU>
- Date: Tue, 12 Jan 1993 02:49:12 GMT
- Lines: 33
-
-
- >> eric@cse.ucsc.edu (Eric Rosen) writes:
- >
- >scasterg@waltham.columbus.oh.us writes:
- >>The standard line given whenever anyone mentions hooking a high speed modem up
- >>to their mac is "you have to get a hardware handshaking cable."
- >>
- >>In my experience, this simply is not true ...
- >
- >Often, a "high speed modem" is synonomous with V.42 or V.42bis.
- >Although I've been able to get by using a non-hardware handshaking
- >cable with vanilla 9600 baud (V.32) connections, my V.42bis connections
- >are not very happy without one. This may simply be due to the higher
- >throughput between the computer and the modem at V.42bis.
- >
- >Extrapolating that argument suggests that higher than 9600 baud rates
- >would also require hardware handshaking.
- >
- >My experiences have involved both a II and IIfx.
- >
-
- Well, I'd been using a Telebit TrailBlazerPlus modem for almost a year
- with an ordinary modem cable and software handshaking before getting a
- hardware-handshaking cable. There was really no noticeable difference
- for ordinary work over the modem. For Z-modem transfers, the best I usually
- did using the old cable was 67% transmission efficiency, while the new
- cable lets me get %80 or so. This is using Telebits PEP compression
- protocal on ASCII file transfers
- --
- -------------------------------------------------------------------------------
- Tom Pollard Department of Chemistry
- pollard@cucbs.chem.columbia.edu Columbia University
- -------------------------------------------------------------------------------
-