From: shoppa@trailing-edge.com (Tim Shoppa) Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: What's a Bell 303 Modem? Date: 11 Jun 2003 06:49:47 -0700 Organization: http://groups.google.com/ Lines: 11 Message-ID: NNTP-Posting-Host: 170.121.15.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1055339388 16551 127.0.0.1 (11 Jun 2003 13:49:48 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 11 Jun 2003 13:49:48 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!irazu.switch.ch!switch.ch!news.maxwell.syr.edu!newsfeed.stanford.edu!postnews1.google.com!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141191 McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 modem on page 195 (second edition) in relation to DSU's and 56000 bps service. What is the Bell 303 modem? A quick Google search didn't help me much... some references to it say that it is a 48kbps DSU (some bits used for parity or CRC?), in which case I don't think it's a modem at all (no actual modulation or demodulation). I don't *think* that it's a typo for the well-known 103. It seems to be more like the V.35 interface. Tim. ###### From: macyh@apk.net (Macy Hallock) Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Followup-To: comp.dcom.telecom.tech Date: 11 Jun 2003 09:55:29 -0400 Organization: APK Net, Ltd. Cleveland, Ohio USA Lines: 19 Message-ID: References: NNTP-Posting-Host: newstaff.apk.net X-Trace: plonk.apk.net 1055339730 20306 207.54.133.102 (11 Jun 2003 13:55:30 GMT) X-Complaints-To: abuse@apk.net NNTP-Posting-Date: 11 Jun 2003 13:55:30 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!news.cis.ohio-state.edu!malgudi.oar.net!plonk.apk.net!news.apk.net!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141174 As quoted from shoppa@trailing-edge.com (Tim Shoppa): +--------------- > McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 > modem on page 195 (second edition) in relation to DSU's and 56000 bps > service. What is the Bell 303 modem? A quick Google search didn't help > me much... some references to it say that it is a 48kbps DSU (some bits > used for parity or CRC?), in which case I don't think it's a modem at all > (no actual modulation or demodulation). > > I don't *think* that it's a typo for the well-known 103. It seems to be > more like the V.35 interface. Hmm. I don't recall a WE Dataphone 303. Could it be a typo? 202's were certainly common. -- Macy M. Hallock, Jr. N8OBG 216.241.7166 fax:216.241.7522 APK Net, Inc. 1621 Euclid Ave. Suite 1230 Cleveland, OH 44115 USA ###### From: Lizard Blizzard Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Wed, 11 Jun 2003 07:24:02 -0700 Organization: CSUnet Lines: 34 Message-ID: References: NNTP-Posting-Host: 204.75.249.20 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312 X-Accept-Language: en-us, en In-Reply-To: Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.imp.ch!news.imp.ch!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!out.nntp.be!propagator2-sterling!news-in.nuthinbutnews.com!usc.edu!newshub.csu.net!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141171 Tim Shoppa wrote: > McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 > modem on page 195 (second edition) in relation to DSU's and 56000 bps > service. What is the Bell 303 modem? A quick Google search didn't help > me much... some references to it say that it is a 48kbps DSU (some bits > used for parity or CRC?), in which case I don't think it's a modem at all > (no actual modulation or demodulation). > > I don't *think* that it's a typo for the well-known 103. It seems to be > more like the V.35 interface. > > Tim. Bell called their 103s and 212s 'Datasets'. So it may not have been actually called a modem. Are you sure that it is not a 4800 bps, instead of a 48000 bps? -- ----------------(from OED Mini-Dictionary)----------------- PUNCTUATION - Apostrophe Incorrect uses: (i) the apostrophe must not be used with a plural where there is no possessive sense, as in ~tea's are served here~; (ii) there is no such word as ~her's, our's, their's, your's~. Confusions: it's = it is or it has (not 'belonging to it'); correct uses are ~it's here~ (= it is here); ~it's gone~ (= it has gone); but ~the dog wagged its tail~ (no apostrophe). ----------------(For the Apostrophe challenged)---------------- From a fully deputized officer of the Apostrophe Police! <> ###### From: jbl Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Wed, 11 Jun 2003 08:21:14 -0700 Organization: On the desert Message-ID: <3ee7477c.569728826@news.c2i2.com> Reply-To: jbl@spamblocked.com References: X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@supernews.com Lines: 21 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!cyclone.bc.net!sjc70.webusenet.com!news.webusenet.com!sn-xit-02!sn-xit-06!sn-post-01!supernews.com!corp.supernews.com!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141163 In , Lizard Blizzard wrote: }Tim Shoppa wrote: }> McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 }> modem on page 195 (second edition) in relation to DSU's and 56000 bps }> service. What is the Bell 303 modem? } }Bell called their 103s and 212s 'Datasets'. So it may not have been }actually called a modem. } }Are you sure that it is not a 4800 bps, instead of a 48000 bps? Bell 303s were around in the '60s and '70s. The original ArpaAnet packet switches were mostly connected by 50kb analog leased lines, with 303 modems at each end. They were large and heavy -- two filled a good sized cabinet. Each also came with a handset that you could use to talk to the handset at the other end of the line. These lines were also quite expensive. /JBL ###### Message-ID: <3EE76103.2C0D24B5@earthlink.net> From: jchausler X-Mailer: Mozilla 4.72 [en] (Win95; I) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? References: <3ee7477c.569728826@news.c2i2.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 37 Date: Wed, 11 Jun 2003 17:02:43 GMT NNTP-Posting-Host: 63.178.89.92 X-Complaints-To: abuse@earthlink.net X-Trace: newsread1.prod.itd.earthlink.net 1055350963 63.178.89.92 (Wed, 11 Jun 2003 10:02:43 PDT) NNTP-Posting-Date: Wed, 11 Jun 2003 10:02:43 PDT Organization: EarthLink Inc. -- http://www.EarthLink.net Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!feed2.news.rcn.net!rcn!elnk-nf1-atl!newsfeed.earthlink.net!stamper.news.atl.earthlink.net!stamper.news.pas.earthlink.net!newsread1.prod.itd.earthlink.net.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141165 jbl wrote: > In , > Lizard Blizzard wrote: > > }Tim Shoppa wrote: > }> McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 > }> modem on page 195 (second edition) in relation to DSU's and 56000 bps > }> service. What is the Bell 303 modem? > } > }Bell called their 103s and 212s 'Datasets'. So it may not have been > }actually called a modem. > } > }Are you sure that it is not a 4800 bps, instead of a 48000 bps? > > Bell 303s were around in the '60s and '70s. The original ArpaAnet packet > switches were mostly connected by 50kb analog leased lines, with 303 > modems at each end. They were large and heavy -- two filled a good sized > cabinet. Each also came with a handset that you could use to talk to the > handset at the other end of the line. These lines were also quite > expensive. I recall when the one (the only one I ever saw) was installed at CMU for their Arpanet link (70/71). IIRC (and I'm rather dusty on this) it was mounted in a 24" communications rack and made of of several "boxes" and used three pairs (six wires) to get its 56K throughput. I have no idea what form of modulation was used. Chris AN GETTO$;DUMP;RUN,ALGOL,TAPE $$ ###### From: DN Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Message-ID: References: <3ee7477c.569728826@news.c2i2.com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 28 NNTP-Posting-Host: 12.250.189.220 X-Complaints-To: abuse@attbi.com X-Trace: rwcrnsc52.ops.asp.att.net 1055394703 12.250.189.220 (Thu, 12 Jun 2003 05:11:43 GMT) NNTP-Posting-Date: Thu, 12 Jun 2003 05:11:43 GMT Organization: AT&T Broadband Date: Thu, 12 Jun 2003 05:11:43 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!irazu.switch.ch!switch.ch!news.maxwell.syr.edu!wn14feed!worldnet.att.net!204.127.198.203!attbi_feed3!attbi.com!rwcrnsc52.ops.asp.att.net.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141329 On Wed, 11 Jun 2003 08:21:14 -0700, jbl wrote: >In , > Lizard Blizzard wrote: > >}Tim Shoppa wrote: >}> McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 >}> modem on page 195 (second edition) in relation to DSU's and 56000 bps >}> service. What is the Bell 303 modem? >} >}Bell called their 103s and 212s 'Datasets'. So it may not have been >}actually called a modem. >} >}Are you sure that it is not a 4800 bps, instead of a 48000 bps? > >Bell 303s were around in the '60s and '70s. The original ArpaAnet packet >switches were mostly connected by 50kb analog leased lines, with 303 >modems at each end. They were large and heavy -- two filled a good sized >cabinet. Each also came with a handset that you could use to talk to the >handset at the other end of the line. These lines were also quite >expensive. > > /JBL True enough, but that was back in the days of Telpak, the bulk private line discount that made owning lots of analog lines a little less expensive. DN ###### From: shoppa@trailing-edge.com (Tim Shoppa) Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: 12 Jun 2003 04:54:52 -0700 Organization: http://groups.google.com/ Lines: 28 Message-ID: References: NNTP-Posting-Host: 170.121.15.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1055418893 14741 127.0.0.1 (12 Jun 2003 11:54:53 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 12 Jun 2003 11:54:53 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!cyclone.bc.net!newsfeed.stanford.edu!postnews1.google.com!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141317 "Dennis Ritchie" wrote in message news:... > "Tim Shoppa" wrote in message > news:bec993c8.0306110549.2e77fcc1@posting.google.com... > > McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 > > modem on page 195 (second edition) in relation to DSU's and 56000 bps > > service. What is the Bell 303 modem? A quick Google search didn't help > > me much... some references to it say that it is a 48kbps DSU (some bits > > used for parity or CRC?), in which case I don't think it's a modem at all > > (no actual modulation or demodulation). > ... > > http://www.nadcomm.com/303ds.htm That's very useful, and answers at least one question I had: it appears to really be a modem for running on dedicated analog wires. It seems to not have anything to do with one-twentifourth of a T1. Still there are some other questions: 1. What's the modulation scheme? 2. What was the interface to the host computer? Again, I see Bell 303 occasionally mentioned in reference to V.35 interfaces, but I cannot tell if they are identical or similar. Maybe some ARPANET docs or BBN insiders would help... Tim. ###### From: Joe Morris Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Thu, 12 Jun 2003 12:57:35 +0000 (UTC) Organization: The MITRE Organization Lines: 13 Message-ID: References: NNTP-Posting-Host: jmorris-pc.mitre.org X-Trace: newslocal.mitre.org 1055422655 21099 128.29.24.210 (12 Jun 2003 12:57:35 GMT) X-Complaints-To: news@mitre.org NNTP-Posting-Date: Thu, 12 Jun 2003 12:57:35 +0000 (UTC) User-Agent: nn/6.6.4 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!out.nntp.be!propagator2-sterling!news-in-sterling.newsfeed.com!newsfeed!newstransit.mitre.org!news.mitre.org!jcmorris Xref: chonsp.franklin.ch alt.folklore.computers:141274 Lizard Blizzard writes: >Bell called their 103s and 212s 'Datasets'. So it may not have been >actually called a modem. My notes (and some contemporary Bell publications) use "DataPhone" as the (trademarked?) name of at least some of the modems. Somewhere I think I've got the Bell pub on the 303, but if so it's in a binder with other 1970s stuff that I know I've not needed to look at for at least 20 years...and couldn't find anywhere in my house. Joe Morris ###### From: Morten Reistad Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Thu, 12 Jun 2003 15:58:15 +0200 Organization: EUnet Norway Lines: 63 Message-ID: References: <3ee7477c.569728826@news.c2i2.com> NNTP-Posting-Host: 193.71.197.12 X-Trace: services.kq.no 1055428249 19845 193.71.197.12 (12 Jun 2003 14:30:49 GMT) X-Complaints-To: abuse@eunet.no NNTP-Posting-Date: Thu, 12 Jun 2003 14:30:49 +0000 (UTC) X-Newsreader: trn 4.0-test76 (Apr 2, 2001) Originator: mrr@acer.reistad.priv.no (Morten Reistad) X-Received-Date: Thu, 12 Jun 2003 16:30:49 MET DST (news01.chello.no) Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!newsfeed.icl.net!newsfeed.fjserv.net!news.teledanmark.no!news01.chello.no!newsfeed1.e.nsc.no!nsc.no!nextra.com!news.powertech.no!news.eunet.no!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141319 In article <3ee7477c.569728826@news.c2i2.com>, jbl wrote: >In , > Lizard Blizzard wrote: > >}Tim Shoppa wrote: >}> McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 >}> modem on page 195 (second edition) in relation to DSU's and 56000 bps >}> service. What is the Bell 303 modem? >} >}Bell called their 103s and 212s 'Datasets'. So it may not have been >}actually called a modem. >} >}Are you sure that it is not a 4800 bps, instead of a 48000 bps? > >Bell 303s were around in the '60s and '70s. The original ArpaAnet packet >switches were mostly connected by 50kb analog leased lines, with 303 >modems at each end. They were large and heavy -- two filled a good sized >cabinet. Each also came with a handset that you could use to talk to the >handset at the other end of the line. These lines were also quite >expensive. All the PTT modems up until approx. the V.22 and similar (but not compatible) Bell standard (was that the 212?) were fully analog devices. They did a simple; normally FSK; modulation into the comms channel, and the single-ended signal was recovered in the other end. Normally they needed 3 cycles for unsynchronized equipment, but with synchronizing the bits with the cycles could squeeze this just a little. The V.21 and 303 had divided the 3600 Hz band in two large signal bands and a small guard band at 1800 Hz. I think the signal bands were 1200 Hz officially, pushable to around 1600 with abusing the electronics. 1/3 of this is 450 bps, and the V.21 modems worked pretty well at 450 bps, and seemed to lose track of bits somewhat below 600; where the two bands invariably collided. Protocols similar to the V.23 could push 1200 bps, pushable to around 1800 by abusing the hardware again. This was also in simplex connections; or two channels for duplex. For faster connections phase shifting into radio "broadband" channels was used; these normally was 50000 Hz, and you could shift one bit per hertz. They were extreme in their demands for noise-free circuits though. Only with the V.22 et al (incl V.29 for fax and simplex at 4800 bps) did the modern modem protocols with combined phase and frequency shifts come into use; and give you more than a bit per hertz. Once the hardware was stable it advanced pretty rapidly to V.22bis, 2400 bps both ways, giving almost two bits per hertz; or V.29bis/ter giving 9600 simplex; the transmission method used in the trusty old fax machines. This was the status in the modem market from around 1981 till 1986; when echo cancelling modems came along; so you could get 9600-14400 in both directions at once. -- mrr ###### From: dhquebbeman@theestopinalgroup.com (Doug Quebbeman) Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: 12 Jun 2003 13:27:29 -0700 Organization: http://groups.google.com/ Lines: 24 Message-ID: <7368b27e.0306121227.78232d8d@posting.google.com> References: NNTP-Posting-Host: 216.135.61.138 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1055449649 8950 127.0.0.1 (12 Jun 2003 20:27:29 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 12 Jun 2003 20:27:29 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!cyclone.bc.net!newsfeed.stanford.edu!postnews1.google.com!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141431 shoppa@trailing-edge.com (Tim Shoppa) wrote in message news:... > > Still there are some other questions: > > 1. What's the modulation scheme? > > 2. What was the interface to the host computer? Again, I see Bell 303 > occasionally mentioned in reference to V.35 interfaces, but I cannot tell > if they are identical or similar. > > Maybe some ARPANET docs or BBN insiders would help... Indiana University used a pair of them to connect a pair of Tran (Computer Transmission Corporation of El Segundo, CA) M3000 Digital Switches together, through a pair of TRAN M2111 muxes (you can see a diagram of the network at members.iglou.com/dougq/cdc/iucn.pdf). I've been trying to track down info on the various TRAN equipment we used back then, including the short-haul and long-haul direct- connect modems we used. All I know is that the M3000 was a re-badged Computer Automation Alpha-16. I saw this equipment on multiple occasions; seems like I saw quite a few of the X.35-style connectors.... so I'm betting you're right. ###### Message-ID: <3EE92291.9010005@bellatlantic.net> From: bob smith User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.0.2) Gecko/20030208 Netscape/7.02 X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Lines: 68 Date: Fri, 13 Jun 2003 01:01:15 GMT NNTP-Posting-Host: 138.88.166.6 X-Complaints-To: abuse@verizon.net X-Trace: nwrddc03.gnilink.net 1055466075 138.88.166.6 (Thu, 12 Jun 2003 21:01:15 EDT) NNTP-Posting-Date: Thu, 12 Jun 2003 21:01:15 EDT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.imp.ch!news.imp.ch!newsfeed.stueberl.de!peer01.cox.net!cox.net!cyclone1.gnilink.net!spamkiller.gnilink.net!nwrddc03.gnilink.net.POSTED!53ab2750!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141365 Tim et al, The 301/303 family of modems were the highspeed conneciton capabilities using dedicated, leased lines, non dialup. The intereface was similar but not exactly the same as CCITT V.35. If you look at the dec specs, you will see the DP8e had an optional 301/303 interface capability, it involved setting a couple of jumpers on the M866 modlule and using the specail cable. the cable was a coax, at least that was what I used for the cable at DEC. Remi Lisee designed the interface, I brought the sytem into prodcution, and I took delivery of two Bell 303s in the mill on a saturday, late june/early july of 71. The modems or data sets were not set up correctly and I redid them, perturbing the union, but I shared the set up info with them. I had the pair in the lab in building 1 for a couple of years. There was a problem with 301s, I think it was fixed in the 303, there was this little problem if you sent too many consecutive zeroes, it would lock up the modulation scheme in the 3xx box. When we did the DQ11, remi and me, we did a 301/303 interface for that too. When it came time to do the DMC line units, it did not make sense to do 301/303 interfaces, I did v.35 after I talked to Univ of Manchester, who had some experets on v.35, and I used their basic design to work with Nastiiona Semi and Signetics to get a v.35 interface in a chip. Same deal with 422/423 interfaces, Bill Fowler from national is the name I recall of the guy who understood we wanted a 1488/1489 set to be able to handle the 422/423 interfaces that were coming AND a way to do v.35. When it came time to design the DMC line units with the built in modem of sorts, I remembered the problems we had with the 300 series, and workign wit hRalph Dieter, we developed an NRZI/Diphase modulation scheme that worked rather well over triax. bob Tim Shoppa wrote: > "Dennis Ritchie" wrote in message news:... > >>"Tim Shoppa" wrote in message >>news:bec993c8.0306110549.2e77fcc1@posting.google.com... >> >>>McNamara's _Technical Aspects of Data Communication_ mentions the Bell 303 >>>modem on page 195 (second edition) in relation to DSU's and 56000 bps >>>service. What is the Bell 303 modem? A quick Google search didn't help >>>me much... some references to it say that it is a 48kbps DSU (some bits >>>used for parity or CRC?), in which case I don't think it's a modem at all >>>(no actual modulation or demodulation). >> >> ... >> >>http://www.nadcomm.com/303ds.htm > > > That's very useful, and answers at least one question I had: it appears > to really be a modem for running on dedicated analog wires. It seems to > not have anything to do with one-twentifourth of a T1. > > Still there are some other questions: > > 1. What's the modulation scheme? > > 2. What was the interface to the host computer? Again, I see Bell 303 > occasionally mentioned in reference to V.35 interfaces, but I cannot tell > if they are identical or similar. > > Maybe some ARPANET docs or BBN insiders would help... > > Tim. ###### From: Reed Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Thu, 12 Jun 2003 20:19:17 -0600 Organization: None Whatsoever Lines: 37 Message-ID: <3EE934A5.7CB3134B@rmi.net> References: NNTP-Posting-Host: 43.1f.9a.8c Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Server-Date: 13 Jun 2003 02:18:22 GMT X-Mailer: Mozilla 4.78 [en] (Win98; U) X-Accept-Language: en To: Tim Shoppa Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!out.nntp.be!propagator2-sterling!in.nntp.be!newsfeed0.news.atl.earthlink.net!news.atl.earthlink.net!stamper.news.atl.earthlink.net!harp.news.atl.earthlink.net!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141448 snip > > That's very useful, and answers at least one question I had: it appears > to really be a modem for running on dedicated analog wires. Exactly > It seems to > not have anything to do with one-twentifourth of a T1. Correct. It used 12 *analog* voice channels known as a *group band*, using analog, pre-T1, carrier facilities. Nothing digital about it. > > Still there are some other questions: > > 1. What's the modulation scheme? The "Codex 8300 Group Band Modem", which was competitor to Bell 303, used "differential four phase PSK". Carrier Freq of 81.92 kHz. Capable of 48, 50, 56 or 64kbps. V.35 or Bell 303 interface. Used by Western Union and others to provide similar service. (specs from old Codex brochure dated 1975) (btw, only used 7" of rack space) > 2. What was the interface to the host computer? Again, I see Bell 303 > occasionally mentioned in reference to V.35 interfaces, but I cannot tell > if they are identical or similar. Similar, not same. Different connector on 303, made by Burndy. Codex also made "Biplexer", reverse mux which took 2 parallel 9.6 modem circuits to appear as single 19.2 channel. (later 2 x 14.4=28.8) It had option for either 303 or V.35 interface. snip --reed ###### Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? References: <3EE934A5.7CB3134B@rmi.net> From: Morten Reistad X-Newsreader: trn 4.0-test76 (Apr 2, 2001) Originator: mrr@acer.reistad.priv.no (Morten Reistad) Message-ID: Lines: 67 Date: Sun, 15 Jun 2003 23:27:13 +0200 NNTP-Posting-Host: 80.111.42.204 X-Complaints-To: abuse@chello.no X-Trace: amstwist00 1055714407 80.111.42.204 (Mon, 16 Jun 2003 00:00:07 MET DST) NNTP-Posting-Date: Mon, 16 Jun 2003 00:00:07 MET DST Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!newsfeed.stueberl.de!newsfeed01.sul.t-online.de!t-online.de!195.34.132.48.MISMATCH!newsfeed01.chello.at!amsnews01.chello.com!amstwist00.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141636 In article <3EE934A5.7CB3134B@rmi.net>, Reed wrote: >snip >> >> That's very useful, and answers at least one question I had: it appears >> to really be a modem for running on dedicated analog wires. > >Exactly > >> It seems to >> not have anything to do with one-twentifourth of a T1. > >Correct. It used 12 *analog* voice channels known as a *group >band*, using analog, pre-T1, carrier facilities. Nothing digital >about it. Different details, but same technology in Rightopondia. Radio broadcast channels that were wide enough to actually include the pilot tone for stereo were the rage in the sixties. ISTR that the documented frequency ceiling in these were 48 khz, but I may be off by a little. They had _excellent_ signal/noise ratios. And they were completely simplex, so forward and backward channels were separatly implemented. Early modems for wideband datacomms used some form of PSK to acheive 64K, it may have been 4PSK on a 32Khz carrier, but I am just speculating here. Transmit and receive were separate units, and hand tuning was needed. A set of these connected Norway to the Inter^H^H^H^H^HArpanet in the seventies. Similar modems are still used for cheap broadcast using audio subcarriers on video-broadcasting satellites. >> Still there are some other questions: >> >> 1. What's the modulation scheme? > >The "Codex 8300 Group Band Modem", which was competitor to Bell >303, used "differential four phase PSK". Carrier Freq of 81.92 >kHz. Capable of 48, 50, 56 or 64kbps. V.35 or Bell 303 interface. >Used by Western Union and others to provide similar service. >(specs from old Codex brochure dated 1975) (btw, only used 7" of >rack space) 4DPSK should be able to deliver more than 64k on a 81.92 carrier? This implies that the shifts happens at a rate of 16 khz, or that they happen every 5.12 cycles. This is a lot slower than phase modulated equipment normally do. Are you sure it was not >F >> 2. What was the interface to the host computer? Again, I see Bell 303 >> occasionally mentioned in reference to V.35 interfaces, but I cannot tell >> if they are identical or similar. V.35 is an abomination. They got almost everything wrong in that one, except the idea to use a balanced electrical interface. What we now know as "V.35" is really a semi-V.36 retrofitted to just barely be able to talk to original V.35 equipment. V.35 is marked "obsolete" in my 1988 CCITT blue book document. It is the only place in ITU-land I have seen such a clear disclaimer on "do not use". -- mrr ###### From: Floyd Davidson Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: 15 Jun 2003 15:19:24 -0800 Organization: __________ Lines: 55 Message-ID: <87llw39ber.fld@barrow.com> References: <3EE934A5.7CB3134B@rmi.net> NNTP-Posting-Host: p-807.newsdawg.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii User-Agent: gnus 5.8.3/XEmacs 21.1.9/Linux Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!pln-w!spln!dex!extra.newsguy.com!newsp.newsguy.com!enews3 Xref: chonsp.franklin.ch alt.folklore.computers:141650 Morten Reistad wrote: >In article <3EE934A5.7CB3134B@rmi.net>, Reed wrote: >>snip >> >>Correct. It used 12 *analog* voice channels known as a *group >>band*, using analog, pre-T1, carrier facilities. Nothing digital >>about it. ... >4DPSK should be able to deliver more than 64k on a 81.92 carrier? It is a "group band" modem, so the analog output must fit into the 60-108kHz band. Group band modem was designed to replace a single Channel Bank in an FDM carrier system hierarchy. That allowed sending digital data via coax/microwave or whatever. The "standard" channel bank intended to be usable with several different kinds of analog carrier systems, but Bell K and L carrier were the most common. K was open wire, but L carrier, while originally designed (in the 1930's) for coax was also commonly used on TD-2 microwave systems that the Bell System crisscrossed the country with in the late 40's and 50's. Each channel bank multiplexed 12 voice frequency 0-4 kHz channels, each to a 4 kHz wide slot in that 60 to 108 kHz range. Channel 1 had a carrier frequency of 108 kHz used the lower sideband, so it covered from 108 to 104 kHz. Channel 2 was from 104 to 100 Khz, and so on. That 48Khz range is what was available for digital modems such as the Bell 303 and the later GB-56 modems. I'm not positive why an 81.92 kHz carrier was used, but I would speculate that it was chosen to allow a 104.08 kHz group pilot to continue to be used. 81.92kHz is the center (with an offset to avoid even kHz frequencies and to provide a small guard band at the high end) of a 44 kHz band from 60 to 104 kHz, thus uses the bandwidth just below the 104.08 kHz pilot. It also leaves channel 1 open for a voice slot, but I don't know if that was actually used (for example, by the Bell 303 modem which did have a voice channel capability). A little more speculation... because I'm not sure when a 104.08 pilot was first used, but the original L carrier used a 92 kHz group pilot (the channel 5 carrier frequency) and was normally equipped that way at least well into the 1950's. It is very likely that the move from 92 to 104 kHz was more than anything else done to allow group band modems to be used in place of channel banks. (The frequency offset to 104.08 had other technical reasons, unrelated to modems.) -- Floyd L. Davidson Ukpeagvik (Barrow, Alaska) floyd@barrow.com ###### From: "Al Gillis" Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Sun, 15 Jun 2003 21:28:14 -0700 Organization: http://extra.newsguy.com Lines: 27 Message-ID: References: NNTP-Posting-Host: p-307.newsdawg.com X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!pln-w!spln!dex!extra.newsguy.com!newsp.newsguy.com!enews3 Xref: chonsp.franklin.ch alt.folklore.computers:141681 "Joe Morris" wrote in message news:bc9tbv$kjb$2@newslocal.mitre.org... > Lizard Blizzard writes: > > >Bell called their 103s and 212s 'Datasets'. So it may not have been > >actually called a modem. > > My notes (and some contemporary Bell publications) use "DataPhone" > as the (trademarked?) name of at least some of the modems. > > Somewhere I think I've got the Bell pub on the 303, but if so it's in > a binder with other 1970s stuff that I know I've not needed to look at > for at least 20 years...and couldn't find anywhere in my house. > > Joe Morris While I'm not exactly sure, as I recall the overall service (froman end to end point of view) was called "DataPhone" but the devices used at a customer premise was called a "Dataset". When a business subscribed to a DataPhone service there was more to it than just a dataset. That's my recollection - I hope it clarifies this minor nit. al ###### From: Joe Morris Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Mon, 16 Jun 2003 14:27:29 +0000 (UTC) Organization: The MITRE Organization Lines: 64 Message-ID: References: NNTP-Posting-Host: jmorris-pc.mitre.org X-Trace: newslocal.mitre.org 1055773649 8824 128.29.24.210 (16 Jun 2003 14:27:29 GMT) X-Complaints-To: news@mitre.org NNTP-Posting-Date: Mon, 16 Jun 2003 14:27:29 +0000 (UTC) User-Agent: nn/6.6.4 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!newsfeed.icl.net!newsfeed.fjserv.net!news.maxwell.syr.edu!newsfeed!newstransit.mitre.org!news.mitre.org!jcmorris Xref: chonsp.franklin.ch alt.folklore.computers:141686 "Joe Morris" wrote: > Somewhere I think I've got the Bell pub on the 303, but if so it's in > a binder with other 1970s stuff that I know I've not needed to look at > for at least 20 years...and couldn't find anywhere in my house. Well...I still can't find the Bell pub, but I did find my old FE handbook "Teleprocessing - General" (Y27-0042-0, dated July 1968). For the Data Set 303 it says: Type -- Transmitter-Receiver Transmission Mode -- Serial (synchronous and non-synchronous) Unbalance/balance [sic] Interface -- Current switching (digital or MIL188B) Modulation -- Baseband modulation with vestigal sideband Bit Rate -- 19.2K baud, 230.4K baud Clocking -- Data Set or business machine Operation -- Full-duplex Communication Facility -- WST [Wideband Service Terminal] Type 5705 & 8803, WST Type 5704 & 8801, WST Type 5754 Remarks -- a) Data set operates on wideband facilities b) A full-duplex voice grade channel is provided for coodination. This channel can be specified through options for simultaneous voice/data operation. c) Business machine cable connector is coaxial type Burndy MD12 MXP-17TC d) Data set clock recommended for business machine applications. e) Data terminal ready and ring indicator leads use RS232-A voltage levels. f) Mark, space current, and voltage interface specifications same as 301B Data Set. [301b: Mark = less than 5ma into 100 ohms or < -0.7V Space= gretaer than 23 ma into 100 ohms or >+1.0V ] g) Transmission of over 500 zero bits can cause loss of bit sync only if not using free-running scrambler. h) Pin G is a local test control line which, when activated, loops transmit output to receive input on line side of data set. i) The digital interface used by IBM is an unbalanced interface allowing a maximum of 50 feet of cable. The MIL 188B is a balanced interface allowing over 50 feet of cable. Elsewhere in the same handbook submodel-to-speed data appears: 303B: 19.2 Kbps 303C: 50 Kbps 303D: 230.4 Kbps And the 303 options required for use with IBM equipment type 2701 (BSC or STR), 2020 (BSC only), or 7711 (STR only) are: 1. Unbalanced customer interface. [I love the phrasing of this...] 2. With scrambler-descrambler 3. Internal transmitter clock (option Z) 4. Free-running scrambler (option Q) 5. Sync logic normal (option J) 6. Non-permanent request-to-send (NOT option T) 7. Customer must chose among non-voice, alternate-voice, or simultaneous-voice for coodinating channel Joe Morris ###### From: jmfbahciv@aol.com Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Wed, 18 Jun 03 13:13:22 GMT Organization: UltraNet Communications, Inc. Lines: 24 Message-ID: References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> X-Trace: UmFuZG9tSVaNOSLTl3YS2qf//Ba/XzMdN/lV/UP41MqekkwtH6oZ6icO9lofw2Zi X-Complaints-To: abuse@rcn.com NNTP-Posting-Date: 18 Jun 2003 15:16:53 GMT X-Newsreader: News Xpress Version 1.0 Beta #4 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.imp.ch!news.imp.ch!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!feed2.news.rcn.net!feed1.news.rcn.net!rcn!207-172-97-180 Xref: chonsp.franklin.ch alt.folklore.computers:141820 In article , Joe Morris wrote: >I normally don't like to see postings where the author didn't limit >the line lengths to something around 75 characters, but this one >produced an unintended bit of humor because my newsreader autowrapped >the lines at cc80. Dropping out some punctuation to keep this posting's >line lengths below 80, here's what was displayed: > >DN writes: > >>It's bigger than a toaster but doesn't make toast. With the connected six-butt >>on card dialer phone, it is heavy enough to cause personal injury if it fell >>on you. > >It took me a few seconds to abandon the attempt to figure out >just what a "connected six-butt" would look like... Think bus with six windows and six moonings. /BAH Subtract a hundred and four for e-mail. ###### From: "Charlie Gibbs" Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: 18 Jun 03 08:51:50 -0800 Organization: http://extra.newsguy.com Lines: 27 Message-ID: <1112.299T2542T5315707@kltpzyxm.invalid> References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> NNTP-Posting-Host: p-192.newsdawg.com X-Newsreader: THOR 2.5a (Amiga;TCP/IP) Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.imp.ch!news.imp.ch!newsfeed.stueberl.de!newsr1.ipcore.viaginterkom.de!btnet-peer1!btnet-peer0!btnet!newsfeed!pln-e!spln!dex!extra.newsguy.com!newsp.newsguy.com!enews2 Xref: chonsp.franklin.ch alt.folklore.computers:141849 In article jcmorris@mitre.org (Joe Morris) writes: > I normally don't like to see postings where the author didn't limit > the line lengths to something around 75 characters, but this one > produced an unintended bit of humor because my newsreader autowrapped > the lines at cc80. Dropping out some punctuation to keep this > posting's line lengths below 80, here's what was displayed: > > DN writes: > >> It's bigger than a toaster but doesn't make toast. With the connected >> six-butt on card dialer phone, it is heavy enough to cause personal >> injury if it fell on you. > > It took me a few seconds to abandon the attempt to figure out > just what a "connected six-butt" would look like... :-) Damn, I didn't see that. Sometimes having a newsreader that does word wrapping just isn't any fun. -- /~\ cgibbs@kltpzyxm.invalid (Charlie Gibbs) \ / I'm really at ac.dekanfrus if you read it the right way. X Top-posted messages will probably be ignored. See RFC1855. / \ HTML will DEFINITELY be ignored. Join the ASCII ribbon campaign! ###### From: DN Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Message-ID: <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> References: <3eef764a_1@news.iglou.com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 36 NNTP-Posting-Host: 12.250.189.220 X-Complaints-To: abuse@attbi.com X-Trace: rwcrnsc51.ops.asp.att.net 1055915072 12.250.189.220 (Wed, 18 Jun 2003 05:44:32 GMT) NNTP-Posting-Date: Wed, 18 Jun 2003 05:44:32 GMT Organization: AT&T Broadband Date: Wed, 18 Jun 2003 05:44:32 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!out.nntp.be!propagator2-sterling!news-in-sterling.newsfeed.com!newsfeed!wn13feed!worldnet.att.net!204.127.198.203!attbi_feed3!attbi.com!rwcrnsc51.ops.asp.att.net.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141898 On Tue, 17 Jun 2003 16:12:56 -0400, "Douglas H. Quebbeman" wrote: >Al Gillis wrote: >> >> While I'm not exactly sure, as I recall the overall service (froman >> end to end point of view) was called "DataPhone" but the devices used >> at a customer premise was called a "Dataset". When a business >> subscribed to a DataPhone service there was more to it than just a >> dataset. >> >> That's my recollection - I hope it clarifies this minor nit. > >Bell actually sold devices that they named "Dataphone"... a >very late (American Bell) example, a Dataphone II (esstentially >just a 1200 bps modem) was up for sale on E-Bay recently, but >did not sell... > >(Pics available)... > >--? >-Douglas Hurst Quebbeman (dougq@iglou.com) [Call me "Doug"] >To reply, place PUNCHTHRU in square brackets in SUBJECT line >"The large print giveth, and the small print taketh away." -Tom Waits > I've still got my Dataphone 103J in the giant battleship gray case with the big blue 'Bell System' ceramic logo on the front. It blazes along using ASK at a whopping 300bps, full duplex. It's bigger than a toaster, but doesn't make toast. With the connected six-button card dialer phone, it is heavy enough to cause personal injury if it fell on you. I just wish I'd had the foresight to get some more of those 'punch-out' dialing cards . . . DN "Someday we'll look back on this moment and plow into a parked car." - Evan Davis ###### From: Joe Morris Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Wed, 18 Jun 2003 12:59:29 +0000 (UTC) Organization: The MITRE Organization Lines: 16 Message-ID: References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> NNTP-Posting-Host: jmorris-pc.mitre.org X-Trace: newslocal.mitre.org 1055941169 12437 128.29.24.210 (18 Jun 2003 12:59:29 GMT) X-Complaints-To: news@mitre.org NNTP-Posting-Date: Wed, 18 Jun 2003 12:59:29 +0000 (UTC) User-Agent: nn/6.6.4 Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.imp.ch!news.imp.ch!nntp-out.monmouth.com!newspeer.monmouth.com!newsfeed!newstransit.mitre.org!news.mitre.org!jcmorris Xref: chonsp.franklin.ch alt.folklore.computers:141856 I normally don't like to see postings where the author didn't limit the line lengths to something around 75 characters, but this one produced an unintended bit of humor because my newsreader autowrapped the lines at cc80. Dropping out some punctuation to keep this posting's line lengths below 80, here's what was displayed: DN writes: >It's bigger than a toaster but doesn't make toast. With the connected six-butt >on card dialer phone, it is heavy enough to cause personal injury if it fell >on you. It took me a few seconds to abandon the attempt to figure out just what a "connected six-butt" would look like... Joe Morris ###### From: DN Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Message-ID: <4lj3fv4u91pf52q6rbb9s712f9ager6fii@4ax.com> References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 40 NNTP-Posting-Host: 12.250.189.220 X-Complaints-To: abuse@attbi.com X-Trace: rwcrnsc54 1056034818 12.250.189.220 (Thu, 19 Jun 2003 15:00:18 GMT) NNTP-Posting-Date: Thu, 19 Jun 2003 15:00:18 GMT Organization: AT&T Broadband Date: Thu, 19 Jun 2003 15:00:18 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed.news2me.com!elnk-pas-nf2!newsfeed.earthlink.net!wn14feed!wn13feed!worldnet.att.net!204.127.198.203!attbi_feed3!attbi.com!rwcrnsc54.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141966 On Wed, 18 Jun 2003 12:59:29 +0000 (UTC), Joe Morris wrote: >I normally don't like to see postings where the author didn't limit >the line lengths to something around 75 characters, but this one >produced an unintended bit of humor because my newsreader autowrapped >the lines at cc80. Dropping out some punctuation to keep this posting's >line lengths below 80, here's what was displayed: > >DN writes: > >>It's bigger than a toaster but doesn't make toast. With the connected six-butt >>on card dialer phone, it is heavy enough to cause personal injury if it fell >>on you. > >It took me a few seconds to abandon the attempt to figure out >just what a "connected six-butt" would look like... > >Joe Morris Okay. That's enough. It was a six-BUTTON set. Button, as in, "button, button, who's got the button?" Or maybe even, "BUTTON it up!" I almost used the term, 'HCK' but I figured I'd confuse all the youngsters reading it. Anyone want to tell me what an 'HCK' is? First correct answer gets a shiny, new BUTTON. DN "The trouble with you is the trouble with me. Got two good eyes and still don't see." - Grateful Dead ###### From: ab528@freenet.carleton.ca (Heinz W. Wiggeshoff) Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? Date: Thu, 19 Jun 2003 11:50:33 -0400 Organization: National Capital Freenet, Ottawa, Ontario, Canada Lines: 16 Sender: ab528@freenet.carleton.ca (Heinz W. Wiggeshoff) Message-ID: References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> NNTP-Posting-Host: p8tc1.std.dialup.ncf.ca X-Trace: freenet9.carleton.ca 1056037892 25854 134.117.137.161 (19 Jun 2003 15:51:32 GMT) X-Complaints-To: complaints@ncf.ca NNTP-Posting-Date: 19 Jun 2003 15:51:32 GMT X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Given-From: "Heinz Wiggeshoff" Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!cyclone.bc.net!tdsnet-transit!newspeer.tds.net!nntp1.roc.gblx.net!nntp.gblx.net!nntp.gblx.net!xcski.com!freenet-news!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141947 "Joe Morris" wrote in message news:bcpnnh$c4l$1@newslocal.mitre.org... ... > >It's bigger than a toaster but doesn't make toast. With the connected six-butt > >on card dialer phone, it is heavy enough to cause personal injury if it fell > >on you. > > It took me a few seconds to abandon the attempt to figure out > just what a "connected six-butt" would look like... The board of directors of Worldcom? ###### Message-ID: <3EF1F404.E2DA3311@yahoo.com> From: CBFalconer Reply-To: cbfalconer@worldnet.att.net Organization: Ched Research X-Mailer: Mozilla 4.75 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? References: <3eef764a_1@news.iglou.com> <6nuvev8h8sgms4lcajni5a8l79alf15g5c@4ax.com> <4lj3fv4u91pf52q6rbb9s712f9ager6fii@4ax.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 25 Date: Thu, 19 Jun 2003 17:36:05 GMT NNTP-Posting-Host: 12.90.176.211 X-Complaints-To: abuse@worldnet.att.net X-Trace: bgtnsc04-news.ops.worldnet.att.net 1056044165 12.90.176.211 (Thu, 19 Jun 2003 17:36:05 GMT) NNTP-Posting-Date: Thu, 19 Jun 2003 17:36:05 GMT Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!irazu.switch.ch!switch.ch!news.maxwell.syr.edu!wn14feed!wn13feed!worldnet.att.net!bgtnsc04-news.ops.worldnet.att.net.POSTED!not-for-mail Xref: chonsp.franklin.ch alt.folklore.computers:141912 DN wrote: > Joe Morris wrote: > ... snip ... > > > >It took me a few seconds to abandon the attempt to figure out > >just what a "connected six-butt" would look like... > > ... snip ... > > That's enough. > > It was a six-BUTTON set. > > Button, as in, "button, button, who's got the button?" However you still appear to not have figured out that the cure is "Limit your line length". Under 80 is mandatory, under 65 is much better. -- Chuck F (cbfalconer@yahoo.com) (cbfalconer@worldnet.att.net) Available for consulting/temporary embedded and systems. USE worldnet address! ###### Sender: eric@ruckus.brouhaha.com From: Eric Smith Newsgroups: comp.dcom.telecom.tech,alt.folklore.computers Subject: Re: What's a Bell 303 Modem? References: <3eef764a_1@news.iglou.com> Organization: Eric Conspiracy Secret Labs X-Eric-Conspiracy: There is no conspiracy. Date: 19 Jun 2003 18:29:18 -0700 Message-ID: Lines: 6 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii NNTP-Posting-Host: ruckus.brouhaha.com X-Trace: 19 Jun 2003 18:38:01 -0700, ruckus.brouhaha.com Path: chonsp.franklin.ch!pfaff.ethz.ch!news-zh.switch.ch!switch.ch!news.mailgate.org!newsfeed.icl.net!newsfeed.fjserv.net!proxad.net!proxad.net!news.kjsl.com!news.spies.com!ruckus.brouhaha.com Xref: chonsp.franklin.ch alt.folklore.computers:142135 "Douglas H. Quebbeman" writes: > Bell actually sold devices that they named "Dataphone"... Rented, mostly. By the time they were available for sale, anyone sensible was buying modems from other companies.