Dynamic Call Routing via Tandem Switch Status Monitoring
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Solution Overview
Problem
Current telecommunications networks inefficiently route calls based on the switch associated with the called telephone number, leading to wasted resources and reduced call completion and service quality, especially when subscribers are roaming or using Voice-over-Internet-Protocol (VoIP).
Innovation Solution
A system and method for dynamically determining the actual terminating switch serving the called subscriber unit, allowing call delivery to be directed to that switch instead of the home switch associated with the telephone number, using a tandem services provider to monitor subscriber unit status and update location data in an SCP database for efficient routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If calls are routed based on the home switch associated with the called telephone number, then call routing simplicity is maintained, but internal routing efficiency deteriorates and resources are wasted
Solution Approach 1:
The patent implements dynamic call routing by querying the Location Register to obtain the current serving switch for the subscriber unit, rather than using static home switch routing. This allows the routing decision to change dynamically based on the subscriber's current location and network conditions, improving internal routing efficiency while managing complexity through automated location-based routing decisions.
Solution Approach 2:
The system uses feedback from the Location Register about the subscriber unit's current serving switch to adjust call routing decisions. This feedback mechanism allows the network to learn the actual current location of mobile subscribers and route calls accordingly, eliminating inefficient internal routing while maintaining system simplicity through automated location-aware routing.
2Reliability
If calls are routed to the home switch for all subscribers, then routing simplicity is maintained, but call completion and service quality deteriorate for roaming subscribers
Solution Approach 1:
The patent implements dynamic call routing by querying the Location Register to obtain the current serving switch for the subscriber unit, rather than using static home switch routing. This allows the routing decision to change dynamically based on the subscriber's current location and network conditions, improving internal routing efficiency while managing complexity through automated location-based routing decisions.
Solution Approach 2:
The system uses feedback from the Location Register about the subscriber unit's current serving switch to adjust call routing decisions. This feedback mechanism allows the network to learn the actual current location of mobile subscribers and route calls accordingly, eliminating inefficient internal routing while maintaining system simplicity through automated location-aware routing.
3Adaptability or versatility
If static call translations are used for call delivery, then routing simplicity is maintained, but adaptability to subscriber location deteriorates
Solution Approach 1:
The patent implements dynamic call routing by querying the Location Register to obtain the current serving switch for the subscriber unit, rather than using static home switch routing. This allows the routing decision to change dynamically based on the subscriber's current location and network conditions, improving internal routing efficiency while managing complexity through automated location-based routing decisions.
Solution Approach 2:
The system uses feedback from the Location Register about the subscriber unit's current serving switch to adjust call routing decisions. This feedback mechanism allows the network to learn the actual current location of mobile subscribers and route calls accordingly, eliminating inefficient internal routing while maintaining system simplicity through automated location-aware routing.
Data Source
AI summary
A third party tandem provider that intercepts and routes voice and data traffic between telecommunications carriers, e.g., wireless carriers, local exchange carriers, and long distance carriers, by dynamically determining the actual terminating switch for a call using a plurality of proprietary databases versus terminating calls merely based on the switch associated with the terminating telephone number. The tandem services provider Service Control Point (SCP) is arranged to maintain a carrier unit's status in a resident database or secure such information per call from the terminating carrier's database. When a call is placed to a telephone number associated with a carrier connected to the tandem, the tandem platform Service Switching Point (SSP) queries the SCP for availability and routing instructions. In response, the SCP accesses its database and/or the terminating carrier's database to determine the status of the unit. If the unit is available, the SCP sends the SSP the unit's current service address (e.g., IP address, telephone number, location routing number) to route the call to the switching location currently serving the subscriber unit. If the unit is unavailable, the SCP sends the SSP the information to route the call to the home switch associated with the called unit for announcement, voice mail, or other treatment. The terminating carrier thus avoids the internal routing inefficiencies of re-directing the call within its network.