Dynamic SBC Selection for IP Telephones
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
IP telephones are limited by hard-coded network addresses of session border controllers (SBCs), which fail to adapt to location changes and do not always provide the best quality of service (QoS), as proximity to an SBC does not guarantee better communication quality.
Innovation Solution
A network registration device dynamically determines the SBC with the highest QoS by pinging multiple SBCs and selecting the one with the best network path, communicating this address to the IP telephone for registration and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the IP telephone is hard-coded with a local SBC network address to ensure successful access to the communications network, then the IP telephone can reliably connect to the network, but the IP telephone cannot adapt when physically relocated to a different geographic location
Solution Approach 1:
The patent implements dynamic SBC selection by having the IP telephone automatically test multiple hard-coded SBC network addresses in sequence. When the primary SBC is unavailable or provides poor service, the system dynamically switches to alternative SBCs without requiring manual reconfiguration, thus maintaining both reliability and adaptability to changing network conditions and locations.
Solution Approach 2:
The system changes the active SBC parameter dynamically based on network conditions. Multiple SBC addresses are hard-coded, but the active SBC is selected based on real-time network performance metrics such as call setup success, service quality, and availability, allowing the system to adapt to location changes while maintaining reliable connection.
2Ease of operation
If the IP telephone connects to the closest SBC in terms of physical distance, then the connection setup is simplified, but the quality of service may be degraded due to network hops and jitter
Solution Approach 1:
The patent implements feedback mechanisms where the IP telephone and SBC mutually authenticate and evaluate service quality. The system monitors network performance metrics such as jitter, delay, and call setup success, and uses this feedback to dynamically select the optimal SBC, ensuring both ease of operation and high quality of service.
Solution Approach 2:
The IP telephone autonomously performs service quality evaluation and SBC selection without user intervention. The system automatically tests multiple SBCs, evaluates their performance based on network conditions and service quality metrics, and selects the best SBC for communication, maintaining simplicity while ensuring reliable QoS.
Data Source
AI summary
A system and method for establishing connection of an IP telephone to a network may include, in response to receiving a registration request from an IP telephone, generating a command to cause network access devices to ping the IP telephone. The command may be communicated to the network access devices. Ping information may be received in response to the network access devices pinging the IP telephone. A network access device may be selected that has the highest quality network access path to the IP telephone. In response to selecting the network access device that has the highest quality network access path, a network address of the selected network access device may be communicated to a network device to enable the IP telephone to communicate with the selected network access device. Credentials may be communicated to the IP telephone to register with the selected network access device.