SD-WAN Controller Extension Mobility for Analog Telephones
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Solution Overview
Problem
Traditional wide area network architectures are limited in bandwidth, security, and complexity management, hindering business productivity, and analog phones lack extension mobility features due to complex provisioning processes, preventing them from benefiting from simplified user-driven mobility like digital phones.
Innovation Solution
A software defined wide area network (SD-WAN) system that includes an SD-WAN controller and voice gateway, enabling the transmission and updating of user profiles to analog telephones for dynamic provisioning, allowing users to associate with any available analog phone and maintain personalized settings across different devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional WAN architectures are used with dedicated MPLS circuits, then security protection and reliable connectivity are improved, but bandwidth limitations and complexity management worsen
Solution Approach 1:
The patent introduces an SD-WAN controller as an intermediary that manages multiple transport technologies (MPLS, Internet, LTE, Wi-Fi) centrally. This controller handles the complexity of security policies, connectivity management, and resource allocation, allowing the network infrastructure to remain simple while achieving high reliability through diverse path selection and centralized control.
2Reliability
If analog phones are used in traditional networks, then simplicity and reliability are improved, but extension mobility and user-driven features worsen
Solution Approach 1:
The patent makes analog phones universal by enabling them to support multiple functions through the SD-WAN controller. The controller provides analog phones with extension mobility, allowing users to register and use any analog phone as their personal extension. This is achieved by having the controller manage user profiles and routing, while the analog phone itself remains simple and reliable.
Solution Approach 2:
The patent adds a new dimension of mobility to traditionally stationary analog phones by introducing user registration and profile association through the SD-WAN controller. This creates a logical layer of flexibility above the physical analog phone infrastructure, allowing users to move between locations and devices while maintaining their personal extension identity.
3Adaptability or versatility
If digital phones with extension mobility are deployed, then user-driven mobility and adaptability are improved, but device complexity and provisioning requirements worsen
Solution Approach 1:
The patent extracts the provisioning complexity from the phone devices themselves and places it in the SD-WAN controller. The controller handles user profile management, extension assignment, and device registration, while the phones (whether analog or digital) remain simple endpoints. This separation of control plane and data plane functions resolves the contradiction between mobility features and provisioning complexity.
4Adaptability or versatility
If SD-WAN controller manages user profiles for analog phones, then extension mobility and adaptability are improved, but system complexity worsens
Solution Approach 1:
The patent merges the management of analog phones into the existing SD-WAN controller infrastructure that already manages digital phones and network resources. By consolidating control functions in a single centralized controller, the system avoids the complexity of separate provisioning systems. The controller handles user profiles, extension mobility, and device management uniformly across different phone types, making the added complexity manageable and reusable.
Data Source
AI summary
According to some embodiments, a method performed by a software defined wide area network (SD-WAN) controller communicably coupled to a voice gateway comprises determining a user profile from one or more stored user profiles is to be associated with an analog telephone and transmitting the user profile to the voice gateway. In particular embodiments, the SD-WAN controller may receive a request to associate the analog telephone with a user from the voice gateway.