M3UA
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| SS7 protocols by OSI layer | |
| Application | INAP, MAP, IS-41... TCAP, CAP, ISUP, ... |
|---|---|
| Network | MTP Level 3 + SCCP |
| Data link | MTP Level 2 |
| Physical | MTP Level 1 |
M3UA stands for MTP Level 3 (MTP3) User Adaptation Layer as defined by the IETF SIGTRAN working group in RFC 4666. M3UA enables the SS7 protocol's User Parts (e.g. ISUP, SCCP and TUP) to run over IP instead of telephony equipment like ISDN and PSTN. It is recommended to use the services of SCTP to transmit M3UA.
An open implementation of the M3UA standard can be found at OpenSS7's web site.
Wireshark is shipped with a dissector for M3UA, sample packets can be found in Wireshark's wiki page ISUP Packet sample (includes M3UA)
External links
- SIGTRAN Tutorial - SS7 over IP Signalling Transport and SCTP tutorial.
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