Post-Ring RSVP Reservation Signaling for Call Center Bandwidth
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Solution Overview
Problem
Existing network communication systems waste bandwidth by establishing Resource Reservation Protocol (RSVP) reservations pre-ring, before any agent answers a call, leading to unnecessary resource allocation when multiple agents may potentially answer.
Innovation Solution
Implementing a method to establish RSVP reservations post-ring, where the reservation is initiated only after the answering agent is notified and has answered, using Session Initiation Protocol (SIP) signaling to optimize resource allocation by allowing reservations to be set up after the INVITE message is processed at the called device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RSVP reservations are established pre-ring before any agent answers a call, then resource reservation is ensured for potential callers, but bandwidth is unnecessarily reserved when multiple agents may answer leading to resource waste
Solution Approach 1:
The system performs preliminary signaling actions (SIP INVITE, 180 Ringing with post-ring indicator) before the actual resource reservation is needed. The reservation is triggered only after the called party answers, combining preliminary signaling with conditional delayed resource allocation to avoid wasting bandwidth while ensuring reservations are made when necessary
Solution Approach 2:
The system dynamically adjusts the timing of resource reservation based on call state. Instead of static pre-ring reservation, the reservation timing becomes dynamic - triggered by the answer event rather than the invite event. This allows the system to adapt resource allocation to actual call needs, reserving bandwidth only when a specific agent answers the call
2Adaptability or versatility
If RSVP reservations are established pre-ring for multiple potential agents, then all possible agents are prepared for the call, but signaling complexity increases with multiple devices exchanging messages
Solution Approach 1:
The invention extracts the resource reservation action from the initial call setup phase and moves it to the call answer phase. Only the ultimately answering agent triggers the RSVP reservation, eliminating the need for multiple agents to exchange complex signaling messages. This extracts the unnecessary signaling complexity while preserving multi-agent capability through the post-ring indicator mechanism
3Reliability
If RSVP reservations are established pre-ring, then resource allocation is secured in advance, but resource allocation efficiency decreases due to unnecessary reservations
Solution Approach 1:
The system performs preliminary signaling (SIP INVITE, 180 Ringing) to prepare for potential resource reservation without actually allocating resources until necessary. This preliminary action ensures the system is ready to allocate resources reliably when an agent answers, while avoiding inefficient pre-allocation that would reduce overall resource allocation efficiency
Solution Approach 2:
The invention changes the timing parameter of resource reservation from pre-ring to post-answer. This parameter change transforms the resource allocation process from inefficient pre-allocation to efficient on-demand allocation, maintaining reliability by ensuring reservations are made when calls are actually answered while improving overall resource allocation efficiency
Data Source
AI summary
In one embodiment, a method includes obtaining a request from a first endpoint to establish a session, determining whether a resource reservation may be established post-ring, and identifying a second endpoint to establish the resource reservation post-ring when it is determined that the resource reservation may be established post-ring. The method also includes notifying the second endpoint of the request and ringing the second endpoint. Notifying the second endpoint of the request includes notifying the second endpoint that the resource reservation may be established post-ring.