System Interface Description – step-by-step instructions and templates SV-1 Template System Interface Description – step-by-step instructions and templates Click the mouse button to see the next slide. Use the browser Back button to return to the Tutorial.

Four Steps in developing your SV-1 Step 1 - Identify the Product's Timescale Decide on the timescale that this product is expected to represent (as-is, to-be, transitional) Multiple timescales are often needed for each product; a separate SV-1 should be produced for each timescale that is needed

Step 2 - Identify the required SV-1 perspectives (Inter-nodal, Intra-nodal and/or Intra-system) Decide on the perspectives required to satisfy the architecture’s objective Inter-nodal - Identifies system nodes and system interfaces between the nodes Intra-nodal - Identifies system to system interfaces within a node Intra-system - Decomposes each system to identify its internal components

Step 3 - Identify Components from your OV-2 From your OV-2 identify & list Operational nodes and needlines that are or will be physically implemented in the architecture Identify & list System nodes and interfaces that are or will be physically implemented in the architecture Convert needlines to systems interfaces by identifying the system linkages that will physically implement the operational needlines

Step 4 - Illustrate System Interface Description Illustrate the system nodes as icons in a diagram, usually as annotated rectangles Connect the system nodes with arrows or lines to depict the interfaces among them If necessary, enter a textual description of each system interface line on the diagram

Templates Two templates have been provided, following this slide First template is for inter-nodal diagrams Copy, delete, move or amend nodes as required Change, delete or add text as required Use connectors to depict interfaces Duplicate the slides as needed Second template can be used for either intra-nodal or intra-system perspective diagrams Delete the instruction slides when SV-1 completed

SV-1 Inter-Nodal template NODE/HQ/UNIT/PLATFORM NAME SYSTEMS SYSTEM A SYSTEM B SYSTEM C MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG NODE/HQ/UNIT/PLATFORM NAME SYSTEMS SYSTEM A SYSTEM B SYSTEM C MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG UNIT/PLATFORM NAME MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG Interface A Interface B NODE/HQ/UNIT/PLATFORM NAME SYSTEMS SYSTEM A SYSTEM B SYSTEM C MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG UNIT/PLATFORM NAME MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG UNIT/PLATFORM NAME MEANS ISDN PSTN SATCOM HF UHF VHF MODES VOICE FAX DATA MSG

SV-1 Intra-Nodal &/or Intra-System template NODE or SYSTEM Name VERTICAL DISTRIBUTION PANEL COMPONENT OR SYSTEM Example SWITCH Example Crypto Interface Box NEXT NODE or SYSTEM Name COMPONENT OR SYSTEM Example SWITCH Example Crypto VERTICAL DISTRIBUTION PANEL NEXT NODE or SYSTEM Name COMPONENT OR SYSTEM COMPONENT OR SYSTEM HORIZONTAL DISTRIBUTION PANEL Example MODEM NEXT NODE or SYSTEM Name