SV-2 Templates

Product Definition. The Systems Communications Description depicts pertinent information about communications systems, communications links, and communications networks. SV-2 documents the kinds of communications media that support the systems and implement their interfaces as described in SV-1. Thus, SV-2 shows the communications details of SV-1 interfaces that automate aspects of the needlines represented in OV-2.

Product Purpose. SV-2 can be used to document how interfaces (described in SV-1) are supported by physical media. This kind of communications media support information is critical in performing certain infrastructure and system acquisition decisions.

Product Detailed Description. SV-2 documents the specific communications links or communications networks (e.g., Intelink or Joint Worldwide Intelligence Communications System [JWICS]) and the details of their configurations through which systems interface. While SV-1 depicts interfaces between systems or systems nodes, SV-2 contains a detailed description of how each SV-1 interface is implemented (e.g., composing parts of the implemented interface including communications systems, multiple communications links, communications networks, routers, and gateways).

Communications systems (e.g., switches, routers, and communications satellites) are systems whose primary function is to control the transfer and movement of system data as opposed to performing mission application processing.

A communications link is a single physical connection from one system (or node) to another. A communications path is a (connected) sequence of communications systems and communications links originating from one system (or node) and terminating at another systems (or node).

A communications network may contain multiple paths between the same pair of systems. The term interface used in SV-1 and referenced in SV-2 represents an abstraction of one or more communications path(s).

The graphical presentation and supporting text for SV-2 should describe all pertinent communications attributes (e.g., waveform, bandwidth, radio frequency, and packet or waveform encryption methods). Communications standards are also documented in this product, where applicable.

Because SV-2 depicts the implementation details for the interfaces described in SV-1 by decomposing them into communications systems, communications links, and communications networks, it can present either internodal or intranodal versions. The internodal version details the communications links and/or communications networks that interconnect systems nodes (node edge to node edge) or specific systems (system-system from one node to other nodes). The intranodal version of SV-2 looks inside each of the represented nodes to illustrate the communications links between specific systems.