Network Node Extension Dialing During Connectivity Loss
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Solution Overview
Problem
In telecommunications networks, existing systems face challenges in maintaining seamless extension number dialing services across remote network parts, particularly during connectivity losses, which disrupt call routing and emergency services.
Innovation Solution
A network node system that monitors signaling messages to store mapping data between telephone dialing numbers and extension numbers, allowing it to process extension number dialing requests according to a detected loss of connectivity operating mode, enabling continued intercom dialing and emergency services by routing calls based on stored data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the server is located in a remote first part of the network and end devices are in a second part, then network architecture flexibility and service distribution are improved, but connectivity loss between parts disrupts extension number dialing services
Solution Approach 1:
The network node proactively monitors signaling messages and pre-stores mapping data between telephone dialing numbers and extension numbers before connectivity is lost. This preliminary action ensures that when connectivity between the first and second parts of the network is lost, the node can immediately continue processing extension number dialing requests using the stored mapping data without service interruption.
2Reliability
If the network node monitors and stores mapping data for all end devices, then service continuity during connectivity loss is improved, but device complexity and data storage requirements increase
Solution Approach 1:
The network node implements localized functionality by storing mapping data specifically for end devices in the second part of the network (the local part) rather than maintaining complete network-wide routing information. This local quality approach allows the node to provide emergency standalone services for local devices while keeping data storage and processing complexity manageable, without requiring comprehensive network-wide information.
3Reliability
If the network node processes extension number dialing requests locally during connectivity loss, then service availability is improved, but processing accuracy may deteriorate without real-time server validation
Solution Approach 1:
The network node creates a local copy of the mapping data between telephone dialing numbers and extension numbers by monitoring and storing information from signaling messages during normal connectivity. This copy enables the node to accurately process extension number dialing requests locally when connectivity is lost, maintaining call routing precision without requiring real-time server validation while still ensuring service availability.
Data Source
AI summary
Measures for use in operating a network node in a telecommunications network. At a network node located in a second part of the network, signaling messages transmitted between a server and end devices in an at least a first group are monitored. Each monitored signaling message includes a telephone dialing number for a given end device in the at least first group and an extension number for the given end device. On the basis of the monitoring, mapping data is stored which includes mappings between telephone dialing numbers and extension numbers for end devices in the at least first group. In response to detecting a loss of connectivity between a first part of the telecommunications network and the second part of the telecommunications network, extension number dialing request messages received from end devices in the first group are processed according to a detected loss of connectivity operating mode.