| Where can I find more information on SS7?Description: OpenSS7 Frequently Asked Questions #13.Keywords: ss7 ss7/ip ss7 over ip ss7 mtp ss7 sccp ss7 tcap sigtran mtp sccp tcap openss7 acb56 linux telephony pstn linux telephony linux nebs linux compactpciNote: Some of the information concerning the reference sources and lists of books in this section may be incomplete, incorrect, out of date, or inconsistent with a publisher or document broker's actual offerings. Please consult with your book or document dealer before making any decisions. Also note that lists in this section do not constitute an endorsement of any document source, book, product, or service. The authors of OpenSS7, their sponsors, agents and representatives will not take responsibility in it. Rather than working directly for the specifications documents (most of which one must pay money for a copy), there are a number of good books publishes which provide the details of the operation of the SS7 protocol: (I personally do not own any of these books—possibly because I could have written them—however, I have seen copies of the books and have coworkers and friends who swear by them.)
Many of the specifications are available only at a significant (to open-source developers) charge. For example, the last price I saw on ATIS T1.PP.111 (MTP) was $530 USD; ATIS T1.PP.112 (SCCP) was $530 USD, also. Perhaps we can convince someone to donate copies of these specifications for use by the project. For information on the specifications for variants of the ITU-T SS7 protocol, the following links may be helpful: International Telecommunications Union - Telecommunications SectorSpecifications of the SS7 protocol are provided at the international level by the International Telecommunications Union - Telephony Sector (ITU-T) in their Q.700 series recommendations. Many of the implementors guides and documents are publicly available without charge off of the ITU website, however, the ITU does charge for most of the primary specifications documents in the Q.700 series, and, therefore, you will not find them available on the OpenSS7 website.
Of course, the ITU-T provides recommendations, specifications and standards for a large number of protocols including ISUP, TCAP, AIN, GSM, MAP, etc., which are of interest, but are not listed here for brevity. You will find references in the OpenSS7 stack documentation to many of the unlisted specifications. European Telecommunications Standards Institute (ETSI)ETSI documents are individually downloadable, free of charge, however, free of charge does not mean that I can post copies here for you. You will have to go register with ETSI and get your own documents from the ETSI Publications Download Area. Most ETSI documents at this level are really just modifications of the ITU-T documents and only contain changes from the ITU-T documents, rather than the complete text of the specification. It is very difficult to work with these modification documents without the original ITU-T Q.700 series recommendations to which the modifications apply.
ETSI has a great number of technical specifications and standards on their website available for download. Many of these specifications have to do with ISUP, TCAP, AIN, GSM, MAP, etc., which are of interest, but are not listed here for brevity. You will find references in the OpenSS7 stack documentation to many of the unlisted specifications. American Telecommunications Standards Institute (ANSI)ANSI provides the standards specifications for the MTP and SCCP portions of the SS7 protocol for most of North America. Telcordia (formerly Bellcore) documents are based heavily on the ANSI documents. The ANSI documents themselves are based heavily upon the ITU-T documents. One source for ANSI documents is Global Engineering Documents. Some popular ANSI SS7 documents are as follows. Most of these documents carry a pretty hefty price tag (several hundred US dollars each). They are not made publicly available without charge.
Telcordia (formerly Bellcore)Telcordia (formerly Bellcore, or Bell Communications Research) was the standization and engineering powerhouse of the RBOCs. Telcordia still fills much of their old role in providing standardization documentation and generic requirements documents for telecommunications carriers in the US. The Telcordia SS7 documentation at the MTP and SCCP level provide for both specification of the protocol as well as conformance tests. Telcordia documents on SS7 are not made freely available, they are publicly available at a fee. Telcordia documents are available from their website. Some of the documents and titles that you may be interested in are as follows:
Telcordia has other specifications relating to ISUP, TCAP, AIN, MAP, etc., which are of interest, but are not listed here for brevity. You will find references in the OpenSS7 stack documentation to many of the unlisted specifications. Please see the Telcordia website for more information. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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