29 Years of the Digest ... founded August 21, 1981
The Telecom Digest for April 22, 2011
====== 29 years of TELECOM Digest -- Founded August 21, 1981 ======
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Date: Wed, 20 Apr 2011 16:36:47 -0500 From: John Mayson <email@example.com> To: firstname.lastname@example.org. Subject: When country codes become +1-NPA codes Message-ID: <BANLkTi=4DP9UKy37CpZtHX2sdpiB_NdQYA@mail.gmail.com> Since the mid-1990s a few areas, namely US territories in the Pacific Ocean, joined the NANPA. I understand why they did this. The calls became "domestic" for billing purposes. I also imagine it made it a little easier for military personnel and make and receive calls to and from the mainland US (international dialing sometimes confuses Americans). Later this year Sint Maarten is scheduled to abandon +599 for +1-721. We briefly touched on this here: http://goo.gl/Hwite. I'm curious what drove this decision, particularly since the other half of the island is maintaining its own country code. Wouldn't a country want its own country code for national pride reasons? Was this perhaps done for tourism or business ties back to the US and Canada? Much of the Caribbean ties back to the original +1-809, but there are islands with their own country codes. Do any of them plan to join the NANPA? Sorry if this seems like an esoteric question. I got to thinking a few days ago when a waste of an area code it is for a country/territory with only a handful of exchanges. -- John Mayson <email@example.com> Austin, Texas, USA
Date: Thu, 21 Apr 2011 15:25:41 +0000 (UTC) From: "Adam H. Kerman" <firstname.lastname@example.org> To: email@example.com. Subject: Re: When country codes become +1-NPA codes Message-ID: <firstname.lastname@example.org> John Mayson <email@example.com> wrote: >Since the mid-1990s a few areas, namely US territories in the Pacific >Ocean, joined the NANPA. I understand why they did this. The calls >became "domestic" for billing purposes. Changing the dialing plan didn't change anyone's billing. It certainly made it easier to scam a US telephone subscriber into dialing a number served by a foreign telephone exchange but not necessarily terminating in that country in order to jack up the bill. >I also imagine it made it a little easier for military personnel and >make and receive calls to and from the mainland US (international dialing >sometimes confuses Americans). I think people with a need to call military personnel would learn how to dial a call. Our largest bases are still in Japan and Germany, two countries that won't ever join NANPA. >Later this year Sint Maarten is scheduled to abandon +599 for +1-721. >We briefly touched on this here: http://goo.gl/Hwite. I'm curious >what drove this decision, particularly since the other half of the >island is maintaining its own country code. Wouldn't a country want >its own country code for national pride reasons? Was this perhaps >done for tourism or business ties back to the US and Canada? That's my assumption. Mark Cuccia can tell us if this is the first telephony area not originally set up by the British that joined NANPA. >Much of the Caribbean ties back to the original +1-809, but there are >islands with their own country codes. Do any of them plan to join >the NANPA? Seems logical, as they are more likely to have American tourists than tourists from the former or current European colonial power. >Sorry if this seems like an esoteric question. I got to thinking a >few days ago when a waste of an area code it is for a >country/territory with only a handful of exchanges. Shirley a dial-a-porn company will grab all the codes not needed by the local population.
Date: Thu, 21 Apr 2011 09:47:36 -0500 From: Dave Garland <firstname.lastname@example.org> To: email@example.com. Subject: Re: Info about these cellular snoopers? Message-ID: <firstname.lastname@example.org> To follow up on the Cellebrite cell-phone snooping gear, here's a link to the user handbook for the equipment: http://cryptome.org/isp-spy/cellbrite-spy.zip
Date: Thu, 21 Apr 2011 08:21:26 -0700 (PDT) From: Lisa or Jeff <email@example.com> To: firstname.lastname@example.org. Subject: Caution urged on medical apps Message-ID: <email@example.com> The Phila Inqr had an article about the explosion of wireless technology used in health care, but there are questions as to their reliability and accuracy. for article please see: http://www.philly.com/philly/business/20110421_Caution_urged_as_smartphone_technology_expands_into_medicine_and_health.html
Date: Thu, 21 Apr 2011 11:40:48 -0700 (PDT) From: Lisa or Jeff <firstname.lastname@example.org> To: email@example.com. Subject: Transoceanic telephony (history) Message-ID: <firstname.lastname@example.org> An interesting article from Bell System Technical Journal of June 1942 describing research into developing a transoceanic cable. Topics including describing the long-wave and short-wave radio-telephone systems then in use, the design parameters of a repeater, physical construction requirements, and a long discussion of bandwidth and making the best use of it in radio, land lines, and cables. Also discussed are experimental cable installations to test all of the above. There's a description of a deviced called a "vocoder" which appears to be a crude form of voice digitization so as to pack more bandwidth within the cable. The problem was that inflections were lost. Much later on the Bell System developed a way to squeeze more conversations on a cable by filling up the natural spaces that occur within conversations.
Date: Thu, 21 Apr 2011 11:57:17 -0700 (PDT) From: Michael <email@example.com> To: firstname.lastname@example.org. Subject: Amtel Apartment Entry Security Phone Message-ID: <email@example.com> In a recent building demolition I grabbed an Amtel Apartment entry type phone. (I can email pictures). Basically there is no display on the unit...just a handset, hookswitch, red indicator "in use" light, and a touchtone keypad. The part number on the Pc board inside is 60-08241, and the designation is AMTEL CLASSIC. I have some limited programming instructions from the client, but I need to know the interconnect on the terminal board inside, i.e. terminals for the power, AC?DC? voltage? Door lock contacts? Pick up the phone, hit a four digit number, person answers, and hits a touch tone to let you in. Does anyone have anything on this unit? I can send you pictures if that will help. TIA firstname.lastname@example.org
Date: Fri, 22 Apr 2011 11:10:21 +1000 From: David Clayton <email@example.com> To: firstname.lastname@example.org. Subject: Apple iPhone secretly records owners' every move Message-ID: <email@example.com> I don't know what is more surprising, the story or that people still believe that they actually have some privacy any more! http://www.theage.com.au/digital-life/mobiles/apple-iphone-secretly-records-owners-every-move-20110421-1dpab.html Apple iPhone secretly records owners' every move Charles Arthur April 21, 2011 Security researchers have discovered that Apple's iPhone keeps track of where you go - and saves every detail to a secret file on the device which is copied to the owner's computer when synchronised. The file contains the latitude and longitude of the phone's recorded co-ordinates along with a timestamp, meaning that anyone who stole the phone or the computer could discover details about the owner's movements using a simple program. With the iPhone tracker, researchers were able to map out the location data their phones were collecting. For some phones, there could be almost a year's worth of data stored, as the recording of data seems to have started with Apple's iOS 4 update to the phone's operating system, released in June 2010. Pete Warden, one of the researchers, said: "Apple has made it possible for almost anybody ... with access to your phone or computer to get detailed information about where you've been." Only the iPhone records the user's location in this way, say Mr Warden and Alasdair Allan, the data scientists who discovered the file and are presenting their findings at the Where 2.0 conference in San Francisco on Wednesday. "We haven't come across any instances of other phone manufacturers doing this," Warden said. Simon Davies, director of the pressure group Privacy International, said: "This is a worrying discovery. The existence of that data creates a real threat to privacy." Mr Warden and Mr Allan point out that the file is moved on to new devices: "The fact that [the file] is transferred across is evidence that the data-gathering isn't accidental." Mobile networks already record phones' locations, but it is only available to the police and other recognised organisations following a court order. The iPhone system appears to record the data whether or not the user agrees. Apple declined to comment on why the file is created or whether it can be disabled. The researchers have set up a web page at Mr Warden's website to let Apple users check location data the phone is retaining. The Guardian has confirmed that 3G-enabled devices, including the iPad, also retain the data. Graham Cluley, at the security company Sophos, suggested that Apple might be seeking data for advertising targeted by location, but he added: "I tend to subscribe to cock-up rather than conspiracy on things like this - I don't think Apple is really trying to monitor where users are." However, Apple can legitimately claim that it has permission to collect the data. Near the end of the 15,200-word terms and conditions for its iTunes program is an 86-word paragraph that says: "Apple and our partners and licensees may collect, use, and share precise location data, including the real-time geographic location of your Apple computer or device. This location data is collected anonymously in a form that does not personally identify you and is used ... to improve location-based products and services." The Guardian
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