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Talk:Comparison of file transfer protocols

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This is an old revision of this page, as edited by Rhobite (talk | contribs) at 21:18, 2 April 2005 (→V.92). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

V.92

V.92, V.90, etc are not serial protocols; they are modem protocols, allowing digital communications over analog phone lines. It is perfectly feasible to use ZMODEM et al without modems. I'm reverting, since it would be inaccurate to call V.92 a serial protocol. Rhobite 21:04, Apr 2, 2005 (UTC)

I was not using the term "serial" in the sense of a serial port connection, but rather in contrast to non-serial (i.e., sequential) protocols schemes such as TCP/IP in which packets do not necessarily need to be received in sequence. I acknowledge that protocols like ZMODEM do not require a modem, but to take your logic even further, modems do not necessarily require an RS-232 connection. If you are intent on clarifying the article (and I do not dispute that it needs clarification) there is surely a better way than by referring to RS-232. —Psychonaut 21:12, 2 Apr 2005 (UTC)
But most implementations of ZMODEM, YMODEM etc only work over RS-232, and most modems use RS-232 to communicate with the PC. I guess you're right, winmodems don't use RS-232 although I think they emulate this layer for compatibility. I guess we shouldn't mention RS-232 or V.92 or anything, since they're not true in all cases. Although I think it's OK since it says they "typically operate across RS-232", not "always". Rhobite 21:18, Apr 2, 2005 (UTC)
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