Date: Wed, 20 Mar 1996 17:11:18 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: jkh@time.cdrom.com (Jordan K. Hubbard) Cc: lehey.pad@sni.de, hackers@FreeBSD.org, isdn@muc.ditec.de Subject: Re: ISDN: "modem" or board? (Was: Microsoft "Get ISDN"?) Message-ID: <199603200641.RAA05914@genesis.atrad.adelaide.edu.au> In-Reply-To: <3349.827292583@time.cdrom.com> from "Jordan K. Hubbard" at Mar 19, 96 07:29:43 pm
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Jordan K. Hubbard stands accused of saying: > > > Watch my lips. A B channel gives you 64,000 bits per second. When you > > add one start bit and one stop bit for every 8 bits, you end up with > > 80,000 bits. Bind two such channels together and you have 160,000 > > Your lips don't make any sense.. :-) You SUBTRACT the start bit and > stop bit, you don't ADD it dude! Ah, sorry Jordan. He's quite correct. 64kb/sec of _data_ requires 80kb/sec on an async line, because you have to _add_ start and stop bits to _make_ it async. We've had this discussion before 8) > Jordan -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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