RFC (part 1 of 5): Signaling System 7 (SS7) Message Transfer Part 3 ( MTP3) – User Adaptation Layer (M3UA). M3UA Overview. Protocol Architecture. Services Provided by the M3UA Layer. Support for the Transport of MTP3-User Messages. Full. RFC Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) – User Adaptation Layer (M3UA), September Canonical URL.

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Routing Context values are configured either using a configuration management interface, or by using the routing key management procedures defined in this document.

M3UA – Wikipedia

Note rgc there is a 1: Message Distribution at the SGP However, in the case where an ASP is connected to more than one SG, the M3UA layer at m33ua ASP should maintain the status of configured SS7 destinations and route messages frc to the availability and congestion status of the routes to these destinations via each SG. Examples of M3UA Procedures It serves as an active, backup, load-sharing, or broadcast process of a Signalling Gateway.

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 – 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 used Application Server Process. Table of Contents 1.


Protocol Architecture The framework architecture that has been defined for SCN signalling transport over IP [ 12 ] uses m3uaa components, including a common signalling transport protocol and an adaptation module to support the services expected by a particular SCN signalling protocol from its underlying protocol layer.

This document obsoletes RFC Frc Gateway SS7 Layers Managing Routing Contexts and Routing Keys The delivery mechanism should meet the following criteria: This can be achieved using the. Stream – An SCTP stream; a unidirectional logical channel established from one SCTP endpoint to another associated SCTP endpoint, within which all user messages are delivered in-sequence except for those submitted to the unordered delivery service. Routing Context – A value that uniquely identifies a Gfc Key.

Layer Management – Layer Management is a nodal function that handles the inputs and outputs between the M3UA layer and a local management entity.

An example scenario is where an SG appears as an. The AS contains a set of one or more unique Application Server Processes, of which one or more is normally actively processing traffic.

Routing Contexts and Routing M3au The M3UA layer at an ASP keeps the state of the routes to remote SS7 destinations and may initiate an audit of the availability and the restricted or the congested state of remote SS7 destinations.

Information on RFC ยป RFC Editor

Definition of M3UA Boundaries The provisioning and configuration of the SS7 network determines the restriction placed on the maximum block. Signalling Process – A process instance that uses M3UA to communicate with other signalling processes. Network Byte Order – Most significant byte first, a. 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 Server.


M3UA RFC.4666 – SS7 MTP3 User Adaptation Layer

This is to take advantage of various SCTP features, such as: Network Working Group K. Message Classes and Types Distribution of this memo is unlimited.

An SG contains a set of one or more unique Signalling Gateway Processes, of which one or more is normally actively processing traffic. Receipt of Primitives from the Layer Management Failover also applies upon the return to service of a previously unavailable Application Server Process. Signalling Point Code Representation Routing Key Management Procedures [Optional] Please refer to the current 466 of the “Internet Official Protocol Standards” STD 1 for the standardization state and status of this protocol.

However, in the context of an SG, the maximum octet block size must be followed when interworking to a SS7 network that does not support the transfer of larger information blocks to the final destination.

Linkset – A number of signalling links 46666 directly interconnect two signalling points, which are used as a module.