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Assessment Title
Rule Text
ISDN-based VTC equipment supporting secure (classified) and non-secure (unclassified) conferences which implement dial isolators and A/B switches must meet minimum port-to-port isolation standards.
Description
Discussion Text
ISDN-based VTC system A/B switches, Dial Isolators, and/or other devices used to interface between RED and BLACK circuits/equipment shall exhibit the following port-to-port isolation characteristics, as applicable:
• 100 dB over the baseband audio frequency range between 0.3 and 15 kHz.
• 80 dB over the baseband video frequency range up to 5 MHz.
• 60 dB over the frequency range from one times (Rd) to ten times the basic data rate (10Rd) of the digital signal(s) processed.
DISN Video Services (DVS) maintains a list of A/B switches and Dial Isolators that have been TEMPEST certified to meet the above requirements at http://disa.mil/Services/Network-Services/Video/~/media/Files/DISA/Services/DVS/red_black_peripherals.xls
• 100 dB over the baseband audio frequency range between 0.3 and 15 kHz.
• 80 dB over the baseband video frequency range up to 5 MHz.
• 60 dB over the frequency range from one times (Rd) to ten times the basic data rate (10Rd) of the digital signal(s) processed.
DISN Video Services (DVS) maintains a list of A/B switches and Dial Isolators that have been TEMPEST certified to meet the above requirements at http://disa.mil/Services/Network-Services/Video/~/media/Files/DISA/Services/DVS/red_black_peripherals.xls
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