Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!usenet.ins.cwru.edu!ncoast!allbery From: allbery@NCoast.ORG (Brandon S. Allbery KB8JRR) Newsgroups: comp.sys.mac.comm Subject: Re: Help wanted: Connecting Mac with Telebit Modem. Message-ID: <1990Nov7.014245.13993@NCoast.ORG> Date: 7 Nov 90 01:42:45 GMT References: <897@public.BTR.COM> Reply-To: allbery@ncoast.ORG (Brandon S. Allbery KB8JRR) Followup-To: comp.sys.mac.comm Organization: North Coast Public Access *NIX, Cleveland, OH Lines: 42 As quoted from <897@public.BTR.COM> by jch@public.BTR.COM (Jack Hwang): +--------------- | I got a Telebit T1000 modem recently. I want to use it on my Mac. But I | can't figure a way to do it. Do I need a special cable for it? I have | tried the cable connecting Mac with my old 2400 baud Hayes-compatible modem. | But every time the T1000 seems to drop back to slow mode after connecting | with the other system. +--------------- I'm using a T1000 with a Mac SE. I hard-reset it before connecting it, so I know I haven't got any of the settings out of default. Make sure you are talking to the modem *at* 9600, or force the connection speed and lock the interface speed. (See the manual.) Many Telebits answer with the PEP tones *last*, since modems which can detect "voice" connections are confused by PEP (and, for that matter, by some V.32 modems). In this case, you *must* force the modem to 9600 baud connect, or it will respond to the slow connect tones instead of waiting for the PEP. Don't expect a T1000 to connect to a V.32 modem, or to the proprietary Hayes and USR modems. +--------------- | Another phenomena was that the DTR light had never turned on. Do I need | a comm software which support DTR? +--------------- By default, the T1000 does not require DTR. I would suspect that it's the cable that isn't right, anyway; the Mac does not lend itself to direct hacking with the serial ports and it's not necessary (contrast this with PClones, where it's the *only* way to get decent speed from the modem). The standard driver (well, the "RAM driver" if we must be pedantic; I've been nailed by a number of armchair pedants of late --- this matters only on the Mac 128K) automatically supports DTR. ++Brandon -- Me: Brandon S. Allbery VHF/UHF: KB8JRR on 220, 2m, 440 Internet: allbery@NCoast.ORG Packet: KB8JRR @ WA8BXN America OnLine: KB8JRR AMPR: KB8JRR.AmPR.ORG [44.70.4.88] uunet!usenet.ins.cwru.edu!ncoast!allbery Delphi: ALLBERY