Network Side Pre-Access Control for Encrypted Conference Calls
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Solution Overview
Problem
Current mobile conference telephone services lack robust security, as they rely solely on end-to-end voice encryption without network participation, making them susceptible to non-encryption conversations.
Innovation Solution
A method and system where the network side detects the encryption status of incoming calls by analyzing the call type in the call establishment message, allowing access only for encrypted conversations, and performs encryption and decryption using cipher keys to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If end-to-end voice encryption is used without network participation, then user privacy is protected, but security against non-encryption conversations cannot be ensured
Solution Approach 1:
The network side device acts as an intermediary that detects call types and determines access permissions. It receives the first call (encryption conference telephone) and the second call (non-encryption conversation), detects their types, and controls whether the network side device accesses the second call based on the call type detection result, thereby ensuring security without requiring complex terminal-side encryption systems
Solution Approach 2:
The network side device performs preliminary detection of call types before allowing access. By detecting whether the second call is an encryption or non-encryption conversation in advance, the system prevents non-encryption conversations from accessing the encryption conference telephone, ensuring security before the potential harm occurs
2Reliability
If the network side detects and filters calls, then security is improved, but call processing time increases
Solution Approach 1:
The patent replaces complex mechanical encryption/decryption operations at the terminal with a simpler network-side detection mechanism. The network side device only needs to detect call types and make access decisions, which is a much lighter operation than performing full encryption and decryption, thereby reducing time loss while maintaining security
Data Source
AI summary
A method for pre-accessing a conference telephone is disclosed in the present invention. The method includes that: a network side detects a received call whose target is a main control party after the main control party initiates an encryption conference telephone; the call is not accessed if the call is a non-encryption conversation; the call is allowed to be accessed if the call is an encryption conversation. A system for pre-accessing a conference telephone is also disclosed in the present invention, wherein, the system includes a pre-accessing processing unit and a call type detection unit of the network side. A network side device is also disclosed in the present invention. The present invention realizes the pre-accessing of the encryption conference telephone, thereby improving security of the encryption conversation as well as avoiding the problem that a user is frequently affected when performing the encryption conference telephone.