Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watnot!watmath!clyde!cbatt!ucbvax!jerry@SEISMO.CSS.GOV@oliveb.UUCP From: jerry@SEISMO.CSS.GOV@oliveb.UUCP Newsgroups: comp.dcom.modems Subject: 2400 baud modems Message-ID: Date: Thu, 12-Feb-87 18:17:00 EST Article-I.D.: SIMTEL20.KPETERSEN.12279126032.BABYL Posted: Thu Feb 12 18:17:00 1987 Date-Received: Sun, 15-Feb-87 09:19:04 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 19 Regarding disadvantages for MNP. I have had two problems with an MNP equipped modem (Vadic 2400 PA). The first is that it will NOT talk to Vadic 3467 modem unless I disable the MNP negotiation. I suspect this may relate somehow to the VA3400 protocol that the 3467 supports but never pinned down the exact cause. The second problem is the time required for the MNP negotiation. By the time the MNP modem has decided that the other modem does not have MNP and informed me of the fact, I have usually missed the prompt sent by the other system. Perhaps the real problem here is all that verbose output. There should be some way to turn it off. My UUCP software doesn't really care whether MNP was used on a particular connection. Are these problems common to other implementations of MNP? The main reason I got the Vadic 2400 PA is that it supports speed conversion. This makes the baudrate supported by the answering modem transparent to me, greatly simplifying automated connections.