On-hook Signal Detector Bandwidth Suppression

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Solution Overview

Problem

In networks with a single communication fabric for both voice and data traffic, maintaining an open connection during the on-hook state wastes bandwidth as in-band signals require an open link, even when no meaningful data is being sent.

Innovation Solution

Suppressing communications between devices until a telephone service-related signal is detected during the on-hook state, and resuming suppression if the system remains in that state after signal transmission, allowing for efficient bandwidth reallocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an open communications link is maintained during the on-hook state to transmit in-band signals, then signal transmission capability is improved, but network bandwidth consumption increases

Engineering Contradiction:
Improvesignal transmission capabilityVSAvoidnetwork bandwidth consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The communications link dynamically transitions between open and closed states based on the detection of on-hook conditions. The system monitors the communications link and closes it when an on-hook state is detected, while maintaining the ability to reopen the link when needed for signal transmission.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent extracts and separates telephone service-related signals from regular voice data traffic. By identifying and isolating these control signals, the system can transmit them through the closed link using out-of-band signaling mechanisms, eliminating the need to keep the main communications link open.

Inventive Principle:
Principle #2Taking out (Extraction)

2Speed

If an open connection is maintained for in-band signal transmission, then signal delivery speed is improved, but network resource efficiency deteriorates

Engineering Contradiction:
Improvesignal delivery speedVSAvoidnetwork resource efficiency
Core Design Contradiction:
SpeedVSProductivity

Solution Approach 1:

The patent introduces an intermediary out-of-band signaling channel that operates independently from the main voice data communications link. This intermediary channel enables rapid signal transmission without requiring the main link to remain open, thus maintaining speed while improving resource efficiency.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The signaling function is segmented from the voice data transmission function. By separating these functions into different channels (in-band for voice, out-of-band for signals), the system can optimize each channel independently, allowing the voice link to be closed while maintaining signal transmission capability.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS7756105B1On-hook signal detector
Publication Date: 2010.07.13 CALIX INC
  • US7756105B1 patent drawing
  • US7756105B1 patent drawing
  • US7756105B1 patent drawing

AI summary

A method and apparatus are disclosed to minimize wasted bandwidth by suppressing communications between a trunking gateway and a media gateway until a telephone service-related signal is detected during an on-hook state. In an embodiment, the trunking gateway and the media gateway are part of a telecommunications network that utilizes a single fabric for both voice traffic and data traffic. For example, the network could transport all traffic via Internet Protocol packets.