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The Telecom Digest for May 06, 2011
Volume 30 : Issue 115 : "text" Format
Messages in this Issue:
Re: Busy trunks--subscriber behavior(Sam Spade)
Re: Toll switching history articles BSTJ(Sam Spade)
Re: DSL Reports: AT&T Caps Have Arrived(danny burstein)
Re: Do you know where there are Teletype machines for sale?(Joessassy73)
Re: Busy trunks--subscriber behavior(Geoffrey Welsh)
Re: Looks like "fake caller ID" laws are about to get a boost(Geoffrey Welsh)

====== 29 years of TELECOM Digest -- Founded August 21, 1981 ======

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We must fight spam for the same reason we fight crime: not because we are naive enough to believe that we will ever stamp it out, but because we do not want the kind of world that results when no one stands against crime.  - Geoffrey Welsh

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Date: Wed, 04 May 2011 17:56:12 -0700 From: Sam Spade <sam@coldmail.com> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: Busy trunks--subscriber behavior Message-ID: <7cmdnXxsfJExaFzQnZ2dnUVZ_uqdnZ2d@giganews.com> Sam Spade wrote: > > The No. 1 and 1A would eventually dump the permanent off-hook to the > receiver off-hook (ROC) routine, then to suspend status ("dirty" > battery). If traffic were really busy, the ROC tone would not be provided. I was mixing two unrelated fields by mistakenly using "ROC" when "ROH" represents receiver off hook.
Date: Thu, 05 May 2011 05:53:30 -0700 From: Sam Spade <sam@coldmail.com> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: Toll switching history articles BSTJ Message-ID: <4rudnU7AELhWAF_QnZ2dnUVZ_rCdnZ2d@giganews.com> Lisa or Jeff wrote: > The September 1952 Bell System Technical Journal had a series of > articles on the development of nationwide toll telephone service: > "Automatic Switching for Nationwide Telephone Service Clark, > Fundamental Plans for Toll Telephone Plant, Nationwide Numbering Plan, > and Automatic Toll Switching Systems." Interesting stuff. > > Also included is a discussion of design details for reliability > reliability--a layperson would not realize all the minute issues that > must be considered for reliability; as well as a report on > semiconductor electrical noise. > > > Issue table of contents: > http://www.alcatel-lucent.com/bstj/vol31-1952/articles/bstj31-5-976.pdf > I get an article on relays. How do I get to the article on nationwide toll service?
Date: Thu, 5 May 2011 01:43:47 +0000 (UTC) From: danny burstein <dannyb@panix.com> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: DSL Reports: AT&T Caps Have Arrived Message-ID: <ipsvcj$q8j$1@reader1.panix.com> In <4DC1885E.1060109@annsgarden.com> Neal McLain <nmclain@annsgarden.com> writes: >150-250 Monthly Caps, $10 Per 50 Gigabyte Overages >by Karl Bode Monday 02-May-2011 >Back in March we exclusively were the first to report that AT&T would be >imposing usage caps and overages on their terrestrial broadband users. >Those caps have officially arrived, with DSL users now facing a 150 GB >monthly cap, and U-Verse users now facing a 250 GB monthly cap. Both DSL >and U-Verse users must pay $10 per every 50GB above the cap they travel. >As our original report noted, only users who exceed the new usage cap >three times -- across the life of your account, not per month -- will be >forced to pay these new per byte overages. >http://www.dslreports.com/shownews/ATT-Caps-Have-Arrived-114012 Aside from my general "this is ugly and wrong and f'ed up" reaction, there's the related issue that each time you pull up a web page, you're "treated" to oodles and oodles of third party advertising (and worse) that eats away at your bucket of bytes. Admittedely it's "just" a small percentage of your total, but that's like saying those spam phone calls to your cellular [a] are only using a few of your minutes. In other words, Mrs. Lincoln, aside from that little incident, how was the play? [a] of course if you're on a pre-pay-by-the-minute account you're hit each and every time. Same for email/sms text spam. -- _____________________________________________________ Knowledge may be power, but communications is the key dannyb@panix.com [to foil spammers, my address has been double rot-13 encoded]
Date: Wed, 04 May 2011 21:40:50 -0500 From: Joessassy73 <user@compgroups.net> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: Do you know where there are Teletype machines for sale? Message-ID: <2sqdnQRku5Gvk1_QnZ2dnUVZ_sCdnZ2d@giganews.com> Hello everyone, I am new to this site but after reading what's on here. I have a few teletype machines in my barn not really sure the condition. Probably 4-5 of them they are older like you used to see in the movies . I live in Massachusetts if anyone has a use for them I would rather they not hang around waiting for the barn to fall down also a lot of ham radio stuff too if anyones interested let me know thanks joe
Date: Thu, 5 May 2011 17:41:56 -0400 From: "Geoffrey Welsh" <gwelsh@spamcop.net> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: Busy trunks--subscriber behavior Message-ID: <5e292$4dc31908$4038ffec$28817@PRIMUS.CA> Stephen wrote: > and modems can be even worse..... On a slightly different but somewhat related topic: I seem to recall ILECs complaining that long modem connections were playing havoc with their provisioning plans... despite the growth of the overall market, the fate of companies like AOL suggests that the number of dialup users has shrunk. I wonder how much the factors used in provisioning planning changed as broadband replaced dialup as the most common connection type? Perhaps the high availability of trunk capacity mentioned in this thread is - at least in part - the result of capacity added during the dialup heyday and underutilized since? Or have technology upgrades over the past decade or two simply provided so much capacity that voice traffic can't normally put a dent in it?
Date: Thu, 5 May 2011 17:56:45 -0400 From: "Geoffrey Welsh" <gwelsh@spamcop.net> To: telecomdigestmoderator.remove-this@and-this-too.telecom-digest.org. Subject: Re: Looks like "fake caller ID" laws are about to get a boost Message-ID: <d46ec$4dc31c80$4038ffec$29581@PRIMUS.CA> Rich Greenberg wrote: > What I have done is ask them to wait, "I'mm just finishing a call on > the other line", then press hold and go about my business, glancing > at the phone from time to time. Most give up after 4-5 minutes, I > have occasionally had one wait 10-15 minutes. I'd worry that eventually I'd encounter one of the extra-vindictive ones who either dialed my number himself or can retrieve it from the dialer and find some way to submit it to a system (or multiple systems) that will call it at inconvenient times. Telecom equipment question: surely there are at least some predictive dialers that can provide the agent with the called number? They'd need that to comply with do-not-call requests, no?
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