---------------------------------------------------------------------- Message-ID: <D122593A-E6BC-40FB-B8F7-5CA9FA435AA0@roscom.com> Date: Fri, 17 Mar 2017 04:11:32 -0400 From: Monty Solomon <monty@roscom.com> Subject: T-Mobile 'ghost calls' clog Dallas 911. Families blame backlog for deaths. T-Mobile "ghost calls" clog Dallas 911. Families blame backlog for deaths. T-Mobile customers in Dallas have been creating backlogs at the city's 911 call center since October. https://www.washingtonpost.com/news/morning-mix/wp/2017/03/16/t-mobile-ghost-calls-clog-dallas-911-families-blame-backlog-for-deaths/ ------------------------------ Message-ID: <68ca5571-a49a-4596-9d89-f6fee3f26d6c@googlegroups.com> Date: Thu, 16 Mar 2017 13:46:02 -0700 (PDT) From: HAncock4 <withheld@invalid.telecom-digest.org> Subject: History: Early microwave long distance network In January 1946, Popular Mechanics magazine ran a detailed illustrated article describing the Bell System's proposed microwave long distance network. It includes a description of the operation of the microwave towers (transmitters and receivers) as well as the new toll dial switching system. see: https://books.google.com/books?id=MuEDAAAAMBAJ&lpg=PA162&dq=%22popular%20mechanics%22%20%22western%20Union%20telegraph%20company%22&pg=PA1#v=onepage&q=%22popular%20mechanics%22%20%22western%20Union%20telegraph%20company%22&f=false (article begins on page 1, note illustrations on page 5.) You may also scroll through the rest of the magazine. ------------------------------ Message-ID: <c7916bbb-c799-4c0d-9d90-bf7153104272@googlegroups.com> Date: Thu, 16 Mar 2017 13:17:58 -0700 (PDT) From: HAncock4 <withheld@invalid.telecom-digest.org> Subject: Re: Why is it so hard to trace an anonymous bomb threat? On Thursday, March 16, 2017 at 12:04:16 PM UTC-4, Monty Solomon wrote: > Why is it so hard to trace an anonymous bomb threat? > http://www.theverge.com/2017/3/14/14913118/jcc-bomb-threats-anonymous-phone-calls-pdx-hacking The article refers to many "poorly defined IP PBX's" that allow hackers to take over their system. It seems to me that such a PBX is a clearly a threat to the integrity to the telephone network, as well as to the business it serves. (A hack could be very costly to the host business). As such, it should be mandated that any PBX connected to the network be required to be secure. Historically, this was policy since customer owned equipment was permitted to be connected--it couldn't impact the network. Yes, that would cost such PBX customers more money, but the article says they get badly burned, so it probably would be worth it to them. Further, obviously allow hacking onto the telephone network could be very harmful. ------------------------------ ********************************************* End of telecom Digest Sat, 18 Mar 2017