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阐述VoIP通讯所面临的安全威胁及H.323和SIP协议各自具有的安全机制。提出不同的企业用户只要为VoIP系统采用恰当的安全认证和加密机制,该系统是可以满足企业的网络通讯安全需求。
Describe the security threats facing VoIP communications and the security mechanisms of H.323 and SIP respectively. It is proposed that different enterprise users only need to adopt the appropriate security authentication and encryption mechanism for VoIP system, which can meet the network communication security needs of enterprises.