Gateway Protocol Interworking H.320 SIP
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Solution Overview
Problem
There is a need for a method to facilitate communication between H.320/H.324 endpoints and SIP endpoints across different network protocols, as H.320/H.324 protocols are primarily used for circuit-switched networks while SIP is designed for packet-switched networks, leading to challenges in interworking between these protocols.
Innovation Solution
A system and method that includes gateways to translate and map messages between H.320/H.324 and SIP protocols, allowing endpoint devices to communicate without modification, by receiving SIP messages, deferring responses, and sending corresponding H.320/H.324 messages to establish media communication channels based on capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If H.320/H.324 protocols are used for circuit-switched networks and SIP protocols are used for packet-switched networks, then communication can be optimized for respective network types, but interworking between different network protocols becomes difficult
Solution Approach 1:
The patent employs a gateway as an intermediary device that translates and maps messages between H.320/H.324 and SIP protocols. The gateway receives SIP messages, defers responses appropriately, and sends corresponding H.320/H.324 messages to establish media communication channels, enabling seamless interworking between circuit-switched and packet-switched networks without modifying endpoint devices
2Adaptability or versatility
If endpoint devices are modified to support multiple protocols, then protocol flexibility improves, but device complexity and modification requirements increase
Solution Approach 1:
Instead of modifying endpoint devices to support multiple protocols, the patent introduces a gateway that handles protocol translation. This intermediary approach allows endpoint devices to remain simple and protocol-specific while the gateway manages the complexity of interworking between H.320/H.324 and SIP protocols
Solution Approach 2:
The system segments the protocol translation function from the endpoint devices and places it in a separate gateway component. This segmentation allows endpoint devices to remain unchanged and simple, while the gateway handles all protocol conversion complexities independently
Data Source
AI summary
Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.