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- Path: darkstar.prodigy.com!davidsen
- From: davidsen@tmr.com (bill davidsen)
- Newsgroups: comp.dcom.modems
- Subject: Re: Is UUCP is critical feature for Unix machine?
- Date: 10 Jan 1996 18:33:07 GMT
- Organization: TMR Associates, Schenectady NY
- Message-ID: <4d10p3$dsm@usenety1.news.prodigy.com>
- References: <4cce5p$605@cmcl2.NYU.EDU> <4chrn4$nm2@usenety1.news.prodigy.com> <4ckopg$6iv@mips.pfalz.de>
- NNTP-Posting-Host: darkstar.prodigy.com
- Originator: davidsen@darkstar.prodigy.com
-
- In article <4ckopg$6iv@mips.pfalz.de>,
- Christian Weisgerber <naddy@mips.pfalz.de> wrote:
- | davidsen@tmr.com (bill davidsen) writes:
-
- | > For V.32bis and V.34 you will get about the same performance using the
- | > 't' or 'e' protocols.
- |
- | You don't want to use 't' or 'e' over serial ports. They don't even have
- | error *detection*, much less error correction.
-
- This is true, but the chances of an error in the serial port is
- pretty minimal, while the link between modems is error checked.
-
- | Run 't' or 'e' *only* over TCP/IP or other end-to-end(!) error free
- | links. (X.25? Just a joke...)
-
- Don't have EC on the CPU IO bus, so most systems are not really end to end.
-
- | > Telebit also spoofs Xmodem and (from memory) Kermit. Check with them
- | > for details.
- |
- | They used to spoof X/YModem, Kermit (94 byte packets), g(64,3), and
- | SDLC. Newer WorldBlazer firmware release support 'g' with larger
- | packet/window size, too, but then you probably don't need spoofing
- | anyway.
-
- For really bad lines I have yet to find anything better than PEP, and
- since it's a half duplex protocol, spoofing helps. We have next to no
- bad lines in the USA, so this is obvious here. When I was making
- connections from rural NY to Moscow we had lines so bad you couldn't be
- sure the phone had been answered at times. The Telebit still pumped
- (some) data through when other protocols didn't.
-
- I'm happy to say that I haven't tried this connection recently, or with
- current V.34+ modems.
- --
- -bill davidsen (davidsen@tmr.com)
- I will support laws and technology which limit what you are allowed
- to hear, if you will oppose laws and technology limiting what I am
- allowed to say.
-
-