M3UA seamlessly transports SS7 MTP3 user part signaling messages over IP using SCTP. M3UA-connected IP endpoints do not have to conform to standard. MTP 3 User Adaptation Layer (M3UA). Member of the SIGTRAN protocol family. XXX – add a brief M3UA description here. The following SIGTRAN protocols in this section: IUA. M2PA, MTP2 User Peer-to- Peer Adaptation Layer. M2UA, MTP2 User Adaptation Layer. M3UA, MTP3.

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SG is an SS7 node with a point code. Version The version field contains the version of the M3UA adapation layer.

Each IP node does not require a point code.

Defined by RFC The protocol consists of a common message header followed by parameters as defined by the message type. Message class The values for message class can be any of the following:. Message Classes and Types The following list contains the valid message classes:.

M3UA Protocol

The INIT chunk contains the following parameters. MTP3 routes the message back to the origination SP. Allows for messages to protoxol delivered in the order in which there were sent.


The primitives are described in Q. The supported version is 1.

Problems, comments, suggestions, corrections including broken links or something to add? Chunk Flags The type of chunk flag as defined in the chunk ID defines whether these bits will be used.

The chunks contain either control information or user data. Allows for multiple virtual connections on the same physical line.

Both transport MTP3 messages. This protocol can also support transport of SCCP-user messages between two endpoints wholly contained within an IP network. It contains one or more error causes.

It can be used by the receiver, in combination with the source IP Address, to identify protocoll association to which this datagram belongs.

Sigtran – Protocol Directory – M2PA | M2UA | M3UA | SCTP

The Selective ACK also contains zero or more fragment reports. A device that converts from one protocol to another.

This includes message transfer between the following: Each IP node is required to have a point code and an IP address. The supported version is 1 – Release 1. M2UA format of variable-length parameters. It is sent by the initiator of an association to its peer to complete the initialization process. You could, at no charge, upgrade to a W3C standards compliant browser such as Firefox. Endpoints not equipped to interpret the vendor-specific chunk sent by a remote endpoint must ignore it.


IP provides an effective way to transport user data and for operators to expand their networks and build new services. SCTP’s multi-streaming allows data to be delivered in multiple, independent streams, so that if there is data loss in one stream, delivery will not be affected for the other streams.

The SCTP user can specify at startup time the number of streams to be supported by the association. Legal and Privacy site by zytrax web-master at zytrax Page modified: You will have a warm inner glow for the rest of the day. It uses two extra variable parameters: Chunk ID The type of information contained in the chunk value field.

Please take the time from a busy life to ‘mail us’ at top of screenthe webmaster below or info-support at zytrax. The delivery mechanism described here allows for full MTP3 message handling and network management capabilities between any two SS7 nodes, communicating over an IP network.