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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Linkset – A number of signalling links that directly interconnect two signalling points, which are used as a module. Network Byte Order – Most significant byte first, a.

This is to take advantage of various SCTP features, such as: 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.

Failover also applies upon the return to service of a previously unavailable Application Server Process. Note that there is a 1: The delivery mechanism should meet the following criteria: This document obsoletes RFC Network Working N3ua K.

Managing Routing Contexts and Routing Keys Routing Key Management Procedures [Optional] However, in the case where an ASP is connected to more than one SG, the M3UA layer at an ASP should maintain the status of configured SS7 destinations and route messages according to the availability and congestion status of the routes to these destinations via each SG.

c – building an M3UA association with SCTP – Stack Overflow

Signalling Process – A process instance that uses M3UA to communicate with other signalling processes. Signalling Point Code Representation 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.


Ffc 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 its underlying protocol layer.

Signalling Gateway SS7 Layers Message Distribution at the SGP An SG contains a set of one or more unique Signalling Gateway Processes, of which one or more is normally actively processing traffic. Routing Context values are configured either using a configuration management interface, or by using the routing key management procedures defined in this document.

M3ja provisioning and configuration of the SS7 network determines the restriction placed on the maximum block. It serves as an active, backup, load-sharing, or broadcast process of a Signalling Gateway.

Routing Context – A value that uniquely identifies a Routing Key. Routing Contexts and Routing Keys Message Distribution at the ASP This can be achieved using the. Examples of M3UA Procedures Table of Contents 1. The AS contains a set of one or more unique Application Server Processes, of which one or more is normally actively processing traffic.

Signaling Transfer Point STP – A node in the SS7 network that provides network access and performs message routing, screening and transfer of signaling messages. Receipt of Primitives from the Layer Management Definition of M3UA Boundaries 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. 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.


M3UA RFC.4666 – SS7 MTP3 User Adaptation Layer

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 mu3a is where an SG appears as an. Please refer to the current edition of the “Internet Official Protocol Standards” STD 1 for the standardization state and status of this protocol.

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. Message Classes and Rvc Distribution of this memo is unlimited.