33 Years of the Digest ... founded August 21, 1981Copyright © 2015 E. William Horne. All Rights Reserved.The Telecom Digest for Mar 14, 2015
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| You know, it's a funny thing, every one of the bastards that are out for legalizing marijuana are Jewish. What the Christ is the matter with the Jews, Bob? What is the matter with them? I suppose it is because most of them are psychiatrists. - Richard M. Nixon |
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| Date: Fri, 13 Mar 2015 10:35:52 -0400 From: Bob K <SPAMpot@Rochester.RR.com> To: telecomdigestsubmissions.remove-this@and-this-too.telecom-digest.org. Subject: Audio available to a called number before answering Message-ID: <5502F5C8.90507@Rochester.RR.com> Not sure if the SUBJECT line really explains what I am confused on! It has been my understanding that when I place a call, until the called number answers, there is no audio path between the two ends, since it follows a different path. I have a Google Voice number that I call into sometimes to forward on to another number. What I have been doing with that number is waiting until it goes to voice mail, then hitting the "*" to get into the advanced mode. Then I have to enter my account PIN, enter a "2" to tell it I am placing a call, and so on. But, it may take 20, or more, seconds for the voice mail to answer. I have found that as soon as I hear the first ring, I can give it the "*" and it will immediately recognize that. How is that audio passed on to the number I have called, if it hasn't answered yet? ...Bob K |
| Date: Fri, 13 Mar 2015 11:10:08 -0400 From: Bill Horne <bill@horneQRM.net> To: telecomdigestsubmissions.remove-this@and-this-too.telecom-digest.org. Subject: Re: Audio available to a called number before answering Message-ID: <20150313151008.GB8844@telecom.csail.mit.edu> On Fri, Mar 13, 2015 at 10:35:52AM -0400, Bob K wrote: > It has been my understanding that when I place a call, until the > called number answers, there is no audio path between the two ends, > since it follows a different path. Well, there may be SOME audio allowed, depending on the type, class, and owner of the terminating switch. If it's an older design, you'll be able to hear signals from the other end, since that's necessary to allow call progress tones and recordings to return to you. You might also be able to speak to the other end, and that depends on both the originating and the terminating offices, as well as the design of tandems in between the end points. These restrictions were put in place to reduce "Black box" fraud, which is a type of toll avoidance that tricks a terminating exchange into connecting a called party without signalling that the call was answered. > I have a Google Voice number that I call into sometimes to forward on > to another number. What I have been doing with that number is waiting > until it goes to voice mail, then hitting the "*" to get into the > advanced mode. Then I have to enter my account PIN, enter a "2" to > tell it I am placing a call, and so on. But, it may take 20, or more, > seconds for the voice mail to answer. > > I have found that as soon as I hear the first ring, I can give it the > "*" and it will immediately recognize that. How is that audio passed > on to the number I have called, if it hasn't answered yet? Oh, that's different. ;-) Well, not really, but it depends on what Google is doing. They may be signalling "completion" as soon as the first ring occurs, and in that case you're hearing "ringing" from Google's switch, which means that as far as the ILEC/CLEC is concerned, the call has been completed and can be billed. Google might also have a connection type which is not expected to return SS7 status information, in which case the originating switch may be providing a two-way voice path as soon as the call signalling is finished. It depends on the type of interconnections Google pays for. Bill -- Bill Horne (Remove QRM from my address to write to me directly) |
| Date: Fri, 13 Mar 2015 10:28:28 -0500 From: Doug McIntyre <merlyn@dork.geeks.org> To: telecomdigestsubmissions.remove-this@and-this-too.telecom-digest.org. Subject: Re: Audio available to a called number before answering Message-ID: <dISdnREN7p2Bn57InZ2dnUU7-XOdnZ2d@giganews.com> Bob K <SPAMpot@Rochester.RR.com> writes: >It has been my understanding that when I place a call, until the >called number answers, there is no audio path between the two ends, >since it follows a different path. .... >I have found that as soon as I hear the first ring, I can give it the >"*" and it will immediately recognize that. How is that audio passed >on to the number I have called, if it hasn't answered yet? With current digital PBX/call termination gear, and assuming digital trunks like PRIs, which are the most common, especially for technology companies like Google.. The call completion time in ISDN is very quick. So quick that the call signalling tones like ringing, answering, etc. is now handled by the PBX/SIP gateway/etc to provide signalling like ringing for people used to hearing ringing. Thus, there is an audio path already setup and going by the time you get the ring signal back from Google's call gateway. Ie. on the PBX system I run, I usually setup my ACD's to have a second to two of ringing first so that my customers' think the call "is going through", while having the agent hunt going on, so that both are together by pickup time. At first, before I added that in, customers could dial and be connected to us in sub-second times without a ring or any other signalling back that the call went through, and customers get confused if somebody starts speaking immediately to them. So I had to add in the ringing and a little delay for "the call to go through". -- Doug McIntyre doug@themcintyres.us |
| Date: Fri, 13 Mar 2015 09:47:39 -0400 From: Bill Horne <bill@horneQRM.net> To: telecomdigestsubmissions.remove-this@and-this-too.telecom-digest.org. Subject: A Concise and Preliminary Summary of the FCC's Published Open Internet Order Message-ID: <mdupoc$hut$1@dont-email.me> by Rob Frieden, Pioneers Chair and Professor of Telecommunications and Law, Penn State University Soon after learning that the FCC would release [its] Open Internet Order, I started to read, skim and summarize. Nine or so hours later, I have generated a summary that should correctly provide the main points of this 400 page document. A better formatted version of the summary is available at: http://www.personal.psu.edu/rmf5/ . So with the proviso that a more complete reading will uncover more, set out below is an overview. Opting to find and apply direct statutory links to establish lawful jurisdiction, the FCC's 2015 Open Internet Order reclassifies broadband Internet access as common carriage with no distinction between wireline and wireless Internet Service Providers ("ISPs"). The Commission chose to apply muscular rules and regulations rather than continue treating ISPs as information service providers, subject to private carrier, government oversight. http://telefrieden.blogspot.com/2015/03/a-concise-and-preliminary-summary-of.html -or- http://goo.gl/Q9T899 -- Bill Horne (Remove QRM from my address to write to me directly) |
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