H3C Technologies H3C MSR 50 - Manual (Page 23)

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Table 11 Encryption card attributes
Attribute Description
Protocol IPsec
Hardware encryption algorithm
Key algorithms: DES, 3DES, AES
Authentication algorithms: HMAC-MD5-96, HMAC-SHA-1-96
Voice Module
VPM (Voice Processing Module) functions to implement the encryption/decryption, EC and CNG of
voices.
VCPM (Voice Co-Processing Module) processes the voice data together with VPM.
• Voice co-processing module (RT-VCPM)
• 8-channel voice processing module (RT-VPM8)
• 16-channel voice processing module (RT-VPM16)
• 24-channel voice processing module (RT-VPM24)
• 32-channel voice processing module (RT-VPM32)