32 Years of the Digest ... founded August 21, 1981
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The Telecom Digest for April 26, 2014
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Date: Thu, 24 Apr 2014 23:10:13 -0700 (PDT) From: "Kumar S.K" <firstname.lastname@example.org> To: email@example.com. Subject: Need details about Diametriq Sigtran ss7 Stack Vs Ulticom Sigtran ss7 Stack Message-ID: <firstname.lastname@example.org> Can Anyone assist me on below points? 1) Currently we're using Ulticom Sigtran ss7 Stack. And, now we are trying to replace with Diametriq Sigtran ss7 Stack. So, any comments on this? 2) Disadvantages of Diametriq ss7 Stack, if any? 3) Advantages of Diametriq ss7 Stack? 4) Any case studies and materials available for these info? 5) Need details about Diametriq Sigtran ss7 Stack Vs Ulticom Sigtran ss7 Stack? NOTE: We are replacing Stack because of "Cost Expensive". Ulticom is very expensive than Diametriq. So, kindly provide info reg this..!
Date: Wed, 23 Apr 2014 17:19:02 -0700 (PDT) From: email@example.com To: firstname.lastname@example.org. Subject: Re: Telco Simulator - Design Challenge? Message-ID: <email@example.com> [moderator pro tem's note: I don't generally suggest replying to 19-year-old questions. They're probably not timely.] On Monday, October 30, 1995 3:00:00 AM UTC-5, Bill Shields wrote: > I have been asked to look into the feasibility of creating an > interface to a standard telephone (via an RJ-11 jack) which meets the > following requirements: > > 1. Provides sufficient power for standard line-powered > telephone. (+5 VDC and +12VDC are available - step-up via > DC-DC converter?). > > 2. Simulates a standard "ring" signal. (115/6.3v transformer > connected "backwards"?). > > 3. Detection of "off-hook" condition (TTL level output). > > 4. Performs 2-wire to 4-wire conversion (standard ICs available?). > > 5. Decode DTMF signals (plenty of ICs available - any favorites?). > > Note that none of this needs to meet any agency approvals since > there will be NO connection to the Telco. > > Any hints, suggestions, pointers to reference materials, app notes, > schematics, etc. would be VERY appreciated! So far, I've managed to > bury myself in various texts, but I am clearly out of my element here > and I have the deep suspicion that I'm trying to re-invent the wheel - > and that there may be others out there for whom this would be > considered trivial. > > Can any of you telephony wizards help? I should mention that IF > this project actually got to the commercial development stage (and > that's a big IF), I could actually afford to PAY someone who could > contribute their expertise. In the meantime, I'm trying to determine > if this is actually feasible at a reasonable cost OR if the marketing > dreamers should be sent back to their cave :-). > > All input and/or comments welcomed and appreciated! > > Regards, > > > Bill http://www.vikingelectronics.com/products/pdf/dle-200b.pdf
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