SIP Authentication Signals for VoIP Call Compliance
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Solution Overview
Problem
Current call admission control systems in VoIP networks cannot guarantee with 100% certainty that certain call conditions are met before and during communication sessions, leading to potential compliance issues and network topology limitations, which increase operating costs and reduce call quality.
Innovation Solution
Modifying Session Initiation Protocol (SIP) User Agents, ingress points, and communication servers to ensure that communication sessions are only established and maintained if specific preconditions, such as call recording, are met, using a deterministic 'heartbeat' signal to enforce compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional call admission control systems are used, then network operations can proceed with standard topology, but call compliance cannot be guaranteed with 100% certainty
Solution Approach 1:
The system performs preliminary verification of call requirements before establishing the communication session. The communication device determines whether the call meets specified requirements (such as recording capabilities) before allowing the session to proceed, ensuring compliance is guaranteed from the outset rather than relying on post-establishment verification.
Solution Approach 2:
The system continuously monitors the communication session to verify that call requirements are maintained throughout the entire session duration. This feedback mechanism ensures that if conditions change during the session (such as recording capability loss), the system can detect and respond to maintain 100% compliance certainty.
2Reliability
If redundant call recording systems are deployed at network ingress points, then call recording coverage increases to 99.99% certainty, but network topology flexibility decreases and operating costs increase
Solution Approach 1:
The communication devices themselves perform the verification of call requirements rather than relying on external network infrastructure. Each communication device autonomously determines whether it meets the specified call requirements, eliminating the need for redundant recording systems at network ingress points and restoring topology flexibility.
Solution Approach 2:
Instead of implementing comprehensive redundant recording at all network ingress points (excessive action), the system applies verification only at the specific communication devices that initiate or receive calls (partial action). This targeted approach achieves the necessary compliance guarantee without the overhead of network-wide redundant infrastructure.
3Reliability
If call requirements are verified only at session establishment, then system complexity remains low, but compliance cannot be maintained throughout the entire session duration
Solution Approach 1:
The system continuously monitors the communication session throughout its entire duration to ensure call requirements are maintained. This continuous verification action ensures that compliance is not just established at session beginning but is sustained throughout the entire communication, capturing changes that may occur during the session.
Data Source
AI summary
Methods and systems provided herein ensure that communication sessions established between select parties, and communication devices, are in complete compliance with a predefined condition, or precondition. Upon determining content and addressing of a communication session, at least one precondition for communications is retrieved from a memory device. The precondition corresponds to a required condition for a communication session to be enabled and maintained. Once the precondition is met, the communication session is established and, as long as the precondition remains intact, the communication session is allowed to be maintained. Ensuring that the precondition exists and remains intact includes embedding an authentication signal, that is based on the precondition, along with communications made in the communication session. When at least a portion of the precondition is no longer met, the communication session is instantaneously terminated.