1. SV-2 Template
Systems Communications Description – step-by-step instructions and templates
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2. Four Steps in developing your SV-2 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-2 should be produced for each timescale that is needed

3. Step 2 - Reference your System Interface Description (SV-1)
Examine each system node and interface documented in your SV-1; these components comprise a "pick list" of candidates for consideration in the production of the SV-2. Identify:
Applicable nodes
Applicable interfaces
Physical characteristics of each interface between system nodes

4. Step 3 - Identify the required SV-2 perspectives
Identify the perspectives that the SV-2 should represent. Each perspective represents a separate version of the SV-2
Inter-nodal - Identifies system nodes and full details of the system interfaces between the nodes
Intra-nodal - Identifies full details of the system to system interfaces within a node

5. Step 4 - Illustrate Systems Communications Description
Illustrate the system nodes as icons in a diagram as annotated rectangles
Connect the system nodes with arrows or lines to depict the interfaces among them
Annotate full details of the physical characteristics of the communications pathways on the interface lines

6. 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 is for intra-nodal diagrams
Delete the instruction slides when SV-2 completed

7. SV-2 Inter-Nodal template
NODE NAME
SYSTEMS
SYSTEM A
SYSTEM B
SYSTEM C
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
NODE NAME
SYSTEMS
SYSTEM A
SYSTEM B
SYSTEM C
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
NODE NAME
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
Interface details
Interface details
Interface details
Interface details
Interface details
Interface details
NODE NAME
SYSTEMS
SYSTEM A
SYSTEM B
SYSTEM C
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
NODE NAME
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
NODE NAME
MEANS
ISDN
PSTN
SATCOM HF
UHF
VHF
MODES
VOICE
FAX
DATA
MSG
Interface details
Interface details

8. SV-2 Intra-Nodal template
NODE Name
VERTICAL DISTRIBUTION PANEL
Interface details
COMPONENT OR SYSTEM
Example SWITCH
Example Crypto
Interface details
Interface Box
Interface details
Interface details
Interface details
Interface details
NEXT NODE Name
COMPONENT OR SYSTEM
Example SWITCH
Example Crypto
VERTICAL DISTRIBUTION PANEL
NEXT NODE Name
COMPONENT OR SYSTEM
COMPONENT OR SYSTEM
Interface details
Interface details
HORIZONTAL DISTRIBUTION PANEL
Example MODEM
NEXT NODE Name