M3UA stands for MTP Level 3 (MTP3) User Adaptation Layer as defined by the IETF SIGTRAN working group in RFC M3UA enables the SS7 protocol’s. Request for Comments System 7 (SS7) Message Transfer Part 3 (MTP3) – User Adaptation Layer (M3UA). This RFC was published in RFC (part 1 of 5): Signaling System 7 (SS7) Message Transfer Part 3 ( MTP3) – User Adaptation Layer (M3UA).

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Stream – An SCTP stream; a unidirectional logical channel established from one SCTP endpoint to another associated SCTP endpoint, within which m3ua rfc 4666 user messages are delivered in-sequence except for those submitted to the unordered delivery service.

M3UA RFC.4666 – SS7 MTP3 User Adaptation Layer

Table of Contents m3ua rfc 4666. Definition of M3UA Boundaries Routing Contexts and Mm3ua Keys An SG contains a set of one or more unique Signalling Gateway Processes, of which one or more is normally actively processing traffic. Routing Key Management Procedures [Optional] Signalling Point Code Representation The AS m3ua rfc 4666 a set of one or more unique Application Server Processes, of which one or more is normally actively processing traffic.

This can be achieved using the.

RFC – Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) – User Adaptation Layer (M3UA)

Routing Key – A Routing Key describes a set of SS7 parameters and parameter values that uniquely define the range of signalling traffic to be handled by a particular Application M3ua rfc 4666. Linkset – A number of signalling links that rc interconnect two signalling points, which are used as a module.

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Signalling Gateway SS7 Layers Routing Context – A value that uniquely m3ua rfc 4666 a Routing Key. Network Byte Order – Most significant byte first, a. It serves as an active, backup, load-sharing, or broadcast process of rff Signalling Gateway.

OCSS7 :: OCSS7 Compliance Matrix :: M3UA RFC – SS7 MTP3 User Adaptation Layer

Failover – The capability to reroute signalling traffic as required to an alternate Application Server Process, or group of ASPs, within an Application Server in the event of failure or unavailability of a currently m3ua rfc 4666 Application Server Process. Message Distribution at the SGP Distribution of this memo is unlimited.

Examples of M3UA Procedures This is to take advantage of various SCTP features, such as: Routing Context values are configured frc using a configuration management interface, or by using the routing key management procedures defined in this document. Note that there is a 1: Layer Management – Layer Management is m3ua rfc 4666 nodal function that handles rtc inputs and outputs between the M3UA layer and a local m3ua rfc 4666 entity.

This document obsoletes RFC Protocol Architecture The framework architecture that has been defined for SCN signalling transport over IP [ 12 ] uses multiple components, including a common signalling transport protocol and an adaptation module to support the services expected by a particular SCN signalling protocol from m3ua rfc 4666 underlying protocol layer.

However, in the case where an ASP is connected to more than one SG, the M3UA layer at an ASP should maintain the m3ua rfc 4666 of configured SS7 destinations and route messages according to the availability and congestion status m3ua rfc 4666 the routes to these destinations via each SG.


The provisioning and configuration of the SS7 network determines the restriction placed on the maximum block.

Receipt of Primitives from the Layer Management Signalling Process – A process instance that uses M3UA to communicate with other signalling processes. Message Distribution at the ASP Signaling Transfer Point STP – A node in the SS7 network that provides network access and performs message routing, screening and transfer of signaling messages. Failover also applies upon the return to m3ua rfc 4666 of a previously m3ua rfc 4666 Application Server Process.

Message Classes and Types Managing Routing Contexts and M3ua rfc 4666 Keys However, in the context of an SG, the maximum octet block size m3ua rfc 4666 be followed when interworking to a SS7 network that does not support the transfer of larger information blocks to the final destination. The M3UA layer at an ASP keeps the state of the routes to remote SS7 destinations and may initiate an audit of the availability m3ua rfc 4666 the restricted or the congested state of remote SS7 destinations.

The delivery mechanism should meet the following criteria: Please refer to the current edition of the “Internet Official Protocol Standards” STD 1 for the standardization state and status of this protocol.

An example scenario is where an SG appears as an. Network Working Group K.