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- From: Arthur@cswamp.apana.org.au (Arthur Marsh)
- Sender: Fredgate@cswamp.apana.org.au
- Newsgroups: comp.dcom.modems
- Distribution: world
- Subject: Can V.32bis or V.42bis be 'faked' by software?
- Message-ID: <724673882.AA00673@cswamp.apana.org.au>
- Date: Fri, 18 Dec 1992 19:43:46 +1000
- Lines: 20
-
- On Sat 12 Dec at 12:16 Geoffrey Welsh wrote:
-
- GW> Unfortunately, V.42bis usually implies V.42 error
- correction, and that
- GW> requires a modem capable of synchronous operation.
-
- I would rather it be put that "V.42bis usually implies LAPM error
- correction as found in V.42".
-
- V.42bis requires BTLZ data compression, plus LAPM or V.120 (or
- both) error correction, and V.42 requires both LAPM *and* MNP 4
- error correction.
-
- That's my understanding from reading CCITT Recommendations V.42
- and V.42bis. Feel free to quote the above in any FAQs about V.42
- and V.42bis.
-
- * Origin: Camelot Swamp MJCNA, Hawthorndene, Sth Australia
- (8:7000/8)
-
-