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Assessment Title
Rule Text
The IP-based VTC system must use H.235-based signaling encryption.
Description
Discussion Text
An IP/H.323-based VTC system as a whole (including CODECs, MCUs, Gatekeepers, Gateways, firewall traversal border elements, etc.) must implement H.235-based signaling encryption. H.235 has been developed to help secure the signaling protocols used in the H.323 suite of protocols. H.235 uses the Advanced Encryption Standard (AES) for encryption and the Diffie-Hellman key exchange protocol for key exchange. AES is supported under H.235 version 3. Technical details of H.235 are set forth in the ITU-T Recommendation H.235.6 (2005), H.323 security: Voice encryption profile with native H.235/H.245 key management.
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