Legacy Call Control Adapter for Unicode Translation
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Solution Overview
Problem
Legacy IP telephony call control systems, designed without support for multiple languages, face challenges in adapting to new character sets without compromising their maturity and stability, as modifying the code to incorporate additional characters can lead to instability and loss of deployment history confidence.
Innovation Solution
A call control system is adapted by incorporating an adapter that transforms incoming events and strings from alternate character sets to legacy-compatible formats, allowing the system to handle Unicode characters without modifying the existing legacy system, thereby maintaining stability and maturity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the code-base of the legacy system is modified to incorporate additional character sets, then language support is improved, but system stability and maturity are compromised
Solution Approach 1:
An adapter component is introduced as an intermediary between the legacy call control system and external Unicode-based applications. The adapter translates Unicode strings to legacy ASCII character sets before they reach the legacy system, allowing the legacy system to maintain its stability while enabling multilingual support through the adapter's translation layer
Solution Approach 2:
The system is segmented into distinct components: the legacy call control system remains separate and unmodified, while a new adapter layer is added on top. This segmentation allows the legacy system to preserve its maturity and deployment history while the adapter handles the complexity of Unicode translation, isolating modifications from the core system
2Adaptability or versatility
If additional character sets are supported by modifying the legacy system, then language versatility is improved, but deployment risk increases
Solution Approach 1:
The adapter serves as a protective intermediary layer that isolates the legacy system from Unicode character set requirements. External applications communicate through the adapter which handles all Unicode-to-ASCII translation, preventing Unicode-related risks from affecting the legacy system's stable deployment environment
Solution Approach 2:
Instead of modifying the legacy system's core functionality, a separate adapter component is created that copies and translates the character set format. The adapter maintains the legacy system's original ASCII interface while providing a Unicode-aware outer layer, preserving deployment confidence
3Adaptability or versatility
If the legacy system is enhanced with new language support, then functionality is improved, but system complexity increases
Solution Approach 1:
The enhancement is segmented into a separate adapter module rather than being integrated into the legacy system's core code-base. This modular approach confines the complexity of Unicode translation to the adapter layer, keeping the legacy system's code-base simple and unchanged
Solution Approach 2:
The adapter acts as a dedicated intermediary layer that handles all character set translation complexity. By centralizing this complexity in a separate component rather than distributing it throughout the legacy system, the overall architecture manages complexity in a controlled manner
Data Source
AI summary
This invention provides a method and apparatus for incorporation with a non-modifiable legacy IP telephony call control system. The system generally includes a legacy call control system for receiving incoming events and legacy strings and, in response, outputs resulting events and the legacy strings. An adapter generates the legacy strings and passes the incoming events and corresponding legacy strings to the legacy call control system.