> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/protocols/mtp3-specification.md).

# MTP3 Specification

TelcoBridges' implementation of [MTP3](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp3/README.md) functionality conforms to the following standards:

* ETS 300 008 – Integrated Services Digital Network; CCITT Signaling System No 7, Message Transfer Part to Support International Interconnection, ETSI.
* GF001-9001 – Technical Specifications of SS7 for National Telephone Network of China, CHINA.
* GR-246, Issue 3, T1.111.4 – Signaling Network Functions and Messages, Bellcore, December 1998.
* GR-246, Issue 3, T1.111.5 - Signaling Network Structure, Bellcore.
* GR-246, Issue 3, T1.111.7 - Testing and Maintenance, Bellcore.
* INTERNET-DRAFT– SS7 MTP3-User Adaptation Layer (M3UA).
* IS 7498 – Open Systems Interconnection – Basic Reference Model, ISO.
* IS 7498 DAD 1 – Open Systems Interconnection – Basic Reference Model Addendum 1: Connectionless, Data Transmission, ISO.
* JT - Q.704 – MTP Signaling Network Functions, Telecommunication Technology Committee (TTC), Japan.
* JT - Q.707 – MTP Testing and Maintenance, Telecommunication Technology Committee (TTC), Japan.
* Q.700 – Introduction to CCITT Signaling System No. 7, CCITT.
* Q.701 – Functional Description of the Message Transfer Part of Signaling System No.7, CCITT.
* Q.702 – Signaling Data Link, CCITT.
* Q.703 – Signaling Link, CCITT.
* Q.704 – Signaling Network Functions and Messages, CCITT.
* Q.705 – Signaling Network Structure, CCITT.
* Q.706 – Message Transfer Part Signaling Performance, CCITT.
* Q.707 – Testing and Maintenance, CCITT.
* Q.708 – Number of International Signaling Point Codes, CCITT.
* Q.709 – Hypothetical Signaling Reference Connection, CCITT.
* Q.710 – Simplified MTP Version for Small Systems, CCITT.
* Q.752 – Monitoring and Measurements for Signaling Systems No.7 Networks, CCITT, 1997.
* Q.782 – MTP Level 3 Test Specification, CCITT.
* Q.2140 – MTP Level 3 Functions and Messages Using the Services of ITU Q.2140, ITU.
* Q.2210 – MTP Level 3 Functions and Messages Using the Services of CCITT Recommendation Q.2140, ITU.
* RFC 2719 – Framework Architecture for Signaling Transport, IETF.
* T1.111.4 – Signaling Network Functions and Messages, ANSI.
* T1.111.5 - Signaling Network Structure, ANSI.
* T1.111.7 - Testing and Maintenance, ANSI.

### Protocol variants

* ANSI (used for ANSI88 and ANSI92)
* ANSI96 (used for ANSI96 and TELCORDIA)
* ITU (used for ITU88, ITU92, ITU97, Q767, SINGAPORE and ETSI)
* CHINA


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