SIGTRAN is the name, derived from ''signaling transport'', of the former Internet Task Force (I) working group that produced specifications for a family of protocols that provide reliable datagram service and user layer adaptations for

Signaling System Signalling System No. 7 (SS7) is a set of telephony signaling protocols developed in 1975, which is used to set up and tear down telephone calls in most parts of the world-wide public switched telephone network (PSTN). The protocol also perform ...

and ISDN communications protocols. The SIGTRAN protocols are an extension of the SS7 protocol family. It supports the same application and call management paradigms as SS7 but uses an Internet Protocol (IP) transport called

Stream Control Transmission Protocol The Stream Control Transmission Protocol (SCTP) is a computer networking communications protocol in the transport layer of the Internet protocol suite. Originally intended for Signaling System 7 (SS7) message transport in telecommunication, the p ...

(SCTP), instead of TCP or UDP. Indeed, the most significant protocol defined by the SIGTRAN group is SCTP, which is used to carry PSTN signaling over IP. The SIGTRAN group was significantly influenced by telecommunications engineers intent on using the new protocols for adapting IP networks to the PSTN with special regard to signaling applications. Recently, SCTP is finding applications beyond its original purpose wherever reliable datagram service is desired. SIGTRAN has been published in RFC 2719, under the title ''Framework Architecture for Signaling Transport''. RFC 2719 also defines the concept of a '' signaling gateway'' (SG), which converts Common Channel Signaling (CCS) messages from SS7 to SIGTRAN. Implemented in a variety of network elements including softswitches, the SG function can provide significant value to existing common channel signaling networks, leveraging investments associated with SS7 and delivering the cost/performance values associated with IP transport.

SIGTRAN protocols

The SIGTRAN family of protocols includes: *

(SCTP), RFC 2960, RFC 3873, RFC 4166, RFC 4960. * ISDN User Adaptation (IUA), RFC 4233, RFC 5133. * Message Transfer Part 2 (MTP) User Peer-to-Peer Adaptation Layer (M2PA), RFC 4165. * Message Transfer Part 2 User Adaptation Layer (M2UA), RFC 3331. * Message Transfer Part 3 User Adaptation Layer (M3UA), RFC 4666. * Signalling Connection Control Part (SCCP) User Adaptation (SUA), RFC 3868. * V5 User Adaptation (V5UA), RFC 3807. * DPNSS/

DASS2 Digital Access Signalling System 2 (DASS2) is an obsolescent protocol defined by British Telecom for digital links to PSTN based on ISDN. Although still available on request, it has been superseded by ETS 300 102 ("EuroISDN"). DASS2 is an improv ...

User Adaption (DUA), RFC 4129 The

provides the transport protocol for SIGTRAN user adaptation layer messages across an IP network. It is described in RFC 3873, RFC 4166 and RFC 4960. ''IUA'' provides an SCTP adaptation layer for the seamless backhaul o
Q.921
user messages and service interface across an IP network. Some users that it supports are Q.931 and QSIG. It is specified in RFC 4233. ''V5UA'' provides an SCTP adaptation layer for the seamless backhaul of V5.2 user messages and service interface across an IP network. It is a variation of ''IUA'' and is specified in RFC 3807. ''M2PA'' provides an SCTP adaptation layer for providing an SS7 MTP signaling link over an IP network. It is specified in RFC 4165. The difference between ''M2PA'' and ''M2UA'' is described in section 1.9 of RFC 4165 ''M2UA'' provides an SCTP adaptation layer for the seamless backhaul of MTP Level 2 user messages and service interface across an IP network. It is specified in RFC 3331. ''M3UA'' provides an SCTP adaptation layer for the seamless backhaul or peering of MTP Level 3 user messages and service interface across an IP network. It is specified in RFC 4666. ''SUA'' provides an SCTP adaptation layer for the seamless backhaul or peering of Signalling Connection Control Part user messages and service interface across an IP network. It is specified in RFC 3868.

Scheme

Notes

References

* *
sigtran.org
- Archived SIGTRAN website. *IEC Tutorial {{Cite web, url=https://sudoparatech.com/hack-phone-calls-whatsapp-to-read-messages-without-touching-the-user-phoness72019/, title=SS7 Hack phone, last=, first=, date=2019-10-06, website=Sudo Para Tech, language=en-US, url-status=live, archive-url=, archive-date=, access-date=2019-10-16- IEC SS7 over IP (SIGTRAN) protocols ead*Sergey Puzankov, Dmitry Kurbatov
How to Intercept a Conversation Held on the Other Side of the Planet
2014-05-22, Positive Hack Days. *

31c3,

CCC CCC may refer to: Arts and entertainment * Canada's Capital Cappies, the Critics and Awards Program in Ottawa, Ontario, Canada * ''Capcom Classics Collection'', a 2005 compilation of arcade games for the PlayStation 2 and Xbox * CCC, the pro ...

,
and Snort
2018-03-31. Computer network organizations Working groups