System Views (SV) [Physical, Specification or Solution Views]

SV-2b System Port Connectivity Description v1.2

A System to System Port (SV-2b) Product specifies the communications links between systems and may also list the protocol stacks used in connections.

Background:

An SV-2b Product is used to give a precise specification of a connection between systems. This may be an existing connection, or a specification of a connection that is to be made.

Usage:

• Interface specification

Data objects:

The data in an SV-2b can include:

• System
• System Port
• Port Connection
• Protocol

Relationships Between Key Data Objects (Simplified from M3)

Representation:

• Topological (Connected Shapes)
• UML Composite Structure Diagram
• SysML Block Diagram

Detailed Product Description:

An SV-2b Product comprises systems, their communications ports, and the connections between those ports. The architect may choose to create a diagram for each pair of connected systems in the Architecture or to show all the connections on one diagram if this is possible.

Simple SV-2b Example Showing Pair of Systems

Each diagram shall show:

• Which ports are connected
• The systems that the ports belong to
• The definition of the connection in terms of the physical connectivity and any protocols that are used in the connection.

The SV-2b View is closely related to the SV-2a View which specifies the available protocols on each port. Any connection specified in an SV-2b View shall conform to the protocols specified on the corresponding port definitions in the SV-2a View.

SV-2b Example based on Mobile Data Comms

Note that networks are represented as Systems. The architect may choose to show other systems being components of the network – i.e. if they are part of the network infrastructure.

Any protocol referred to in an SV-2b diagram must be defined in the TV-1 Technical Standards View.

Page version 1.2, dated 20th June 2008

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