Dear TT, Telco bypass means a way traffic is transported avoiding telco networks using instead IP over broadband links. It is not directly related to the protocol you use to interface with PSTN but with the fact that making interconnections with telcos in each end of the road, you avoid passing thru Telco's TDM infraestrucure and hence paying them the "toll" for long distance charges. Actually, you can use SS7, ISDN, or other protocols to interact with Telcos. About feasibility, it depends of how the telecom market is regulated in each country, in some places Government regulators forbide any bypass, in others (like most of America?s countries, for instance) if you make the bypass for your internal usage (among branches of the company, not involving usage of telephone networks in any side) you can do it, in thos elast cases, if you owns the bypass network and wants to resell this service for customers (as calling card oerator does, for instance) you need a Telecom Licence, which is easy or difficult to get depending each country. By the way, I also have Russel?s book and I really recommend it for a deeper understanding of SS7, we use in our Company to make an ITU-compliant SS7 stack for Asterisk, but if you are studying the how the bypass works, I would recommend you some more general reading such as Voip Fundamentals from Cisco Press (specially the first chapters) or many others around. Regards. Jorge Churio CEO Fonalix by BGH asterisk-ss7-request at lists.digium.com wrote: > Send asterisk-ss7 mailing list submissions to > asterisk-ss7 at lists.digium.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.digium.com/mailman/listinfo/asterisk-ss7 > or, via email, send a message with subject or body 'help' to > asterisk-ss7-request at lists.digium.com > > You can reach the person managing the list at > asterisk-ss7-owner at lists.digium.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of asterisk-ss7 digest..." > > > Today's Topics: > > 1. telco bypass feasibility (telecomtom at vedatel.com) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 29 Sep 2007 05:34:32 -0700 (PDT) > From: telecomtom at vedatel.com > Subject: [asterisk-ss7] telco bypass feasibility > To: asterisk-ss7 at lists.digium.com > Message-ID: > <2571.75.87.192.146.1191069272.squirrel at webmail.vedatel.com> > Content-Type: text/plain;charset=iso-8859-1 > > greetings ss7 users, > > question(s): can anyone on this list refer me to articles or feasibility > studies on the use of SS7 products that enable organizations > (medium-to-large companies, colleges, small villages and other > municipalities) to connect their voip networks directly to the PSTN > without having to be telco customer? I've heard that telco bypass is done > in countries outside the US. Is there a technical or legal reason for > that? Can it be done in the US? Which products from companies like digium > and sangoma enable telco bypass, and what general architectures are these > products found in? > > background: i'm preparing a feasibility study on telco bypass. i'm > studying two books: travis russell's "Signaling System #7" and Frank > Ohrtman's "Softswitch: Architecture for VoIP". besides being a solution to > insomnia (the reading is so intense it tends to make one fall asleep!), > these books have opened my eyes to a world of possibilities. but what is > possible is not always feasible, so i'm posting to this list. > > -- TIA, TT > > > > > ------------------------------ > > _______________________________________________ > --Bandwidth and Colocation Provided by http://www.api-digital.com-- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 > > End of asterisk-ss7 Digest, Vol 31, Issue 13 > ******************************************** > _____________________________________________________________________ This information is private and confidential and intended for the recipient only. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communication is for information purposes only and shall not be regarded neither as a proposal, acceptance nor as a statement of will or official statement from Globant. Email transmission cannot be guaranteed to be secure or error-free. Therefore, we do not represent that this information is complete or accurate and it should not be relied upon as such. All information is subject to change without notice.
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