Core Network Bypass for Toll-Free Call Routing
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Solution Overview
Problem
Telephony service providers face significant challenges in maintaining uninterrupted toll-free call services when their core network experiences disruptions due to issues like DDoS attacks, equipment failures, or carrier outages, leading to potential service disruptions.
Innovation Solution
Implementing a system to continuously monitor the core telephony network for anomalies and re-route toll-free calls through a network bypass cloud platform, using an industry registry database and carrier portals to update routing instructions, allowing calls to bypass the core network during disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If toll-free calls are routed through the service provider's core network, then normal call routing and billing processing are maintained, but service disruptions occur when the core network experiences anomalies such as DDoS attacks or equipment failures
Solution Approach 1:
An intermediary routing system is introduced that sits between the public switched telephone network (PSTN) and the service provider's core network. This intermediary monitors core network health and dynamically routes calls either through the core network when healthy or through alternative paths when anomalies are detected, thereby maintaining call delivery reliability while isolating the core network from direct exposure to traffic anomalies
Solution Approach 2:
The routing architecture is made dynamic through real-time monitoring of core network conditions and automated routing decisions. The system continuously assesses core network health metrics and adjusts call routing paths dynamically, switching between normal routing through the core network and alternative routing through intermediary systems based on current network conditions
2Reliability
If the core network is monitored continuously for anomalies, then service disruptions can be detected early, but system complexity and monitoring overhead increase
Solution Approach 1:
A feedback mechanism is implemented where the routing system continuously monitors core network performance metrics and uses this feedback to make real-time routing decisions. The system collects data on network health, analyzes anomalies, and automatically adjusts routing paths based on the feedback received, creating a closed-loop control system that maintains reliability without requiring complex manual intervention
Solution Approach 2:
The routing system performs self-diagnosis and self-adjustment by automatically detecting core network anomalies and rerouting calls without human intervention. The system monitors its own operational status and the core network's health, making autonomous decisions to maintain service continuity, thereby reducing the need for complex external monitoring infrastructure
Data Source
AI summary
Techniques are described for determining when and how to re-route toll-free calls around a core telephony network experiencing significant disruptions. A core telephony network of a telephony service provider is monitored for anomalies. Upon detecting an anomaly, it is determined whether the anomaly is significant enough to warrant re-routing inbound toll-free calls around the core telephony network. The re-routing process comprises accessing an industry registry database including a plurality of toll-free numbers (TFNs) associated with a routing template comprising the instructions for routing toll-free calls. The routing template instructions may be switched to re-direct toll-free calls associated with one or more specific TFNs to a particular carrier. Within that particular carrier, the routing instructions may be switched to re-direct the toll-free calls away from the service provider's core telephony network to a network bypass cloud platform. The network bypass cloud platform may be configured to receive toll-free calls, determine a customer telephony network to which to route the received toll-free calls based on the TFN of the toll-free call, and route the toll-free call to the customer telephony network.