Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a544 From: Rick_McCormack@mindlink.bc.ca (Rick McCormack) Newsgroups: comp.sys.mac.comm Subject: Re: MNP5 Modem Problem Message-ID: <6147@mindlink.bc.ca> Date: 5 Jun 91 11:52:32 GMT Organization: MIND LINK! - British Columbia, Canada Lines: 34 Michael Carman writes: MC > Can anyone out there in Netland help with a problem I'm MC > having with my modem? I have a MNP5 with v.42 and am MC > wondering if I need a special cable to get these features MC > working with my Mac SE? MC > MC > I'm currently using my old cable from my 1200 baud modem MC > and, although the modem functions fine at plain-Jane 2400 MC > baud, I cannot seem to get it to work as an error correcting MC > MNP5 modem. MC > MC > I recall reading somewhere that I should be using a cable MC > that supports more than the three pins provided by most MC > cables ... Reading from my EMAC 2400 MNP5/v42 manual, I find there a reference to a change in pin use depending on whether CTS is invoked (or not) with the "!C" command. To quote: "If the !C0 command is in effect, the CTS signal is output on pin 5, and the DCD signal is output to pin 8 (default). If the !C1 command is in effect, the CTS signal is not output, the DCD signal is output on pin 5, and pin 8 is meaningless." I traced my original problems in MNP5 connections to interactions between RedRyder 10.4 and my settings for the EMAC, revolving around my use of the !C command on a Mac Plus. ( I have since found other intermittent problems -- but they were all mine!) Hope this helps, as I understand that the above situation is common on many MNP5 modems using the Mac serial ports. -- _________________________________________________________ | IMAGISTICS Business Theatre Technology | Rick McCormack | | Interactive Effective Compelling | Vancouver, BC | |________________________________________|________________| | UseNet: Rick_McCormack@mindlink.uucp | A O-L: Rique | |_________________________________________________________| .