Gateway Clear Channel Mode for TDM Data Frame Integrity

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Solution Overview

Problem

Existing gateway devices in TDM-to-packet network transitions often modify data information, such as SMS text messages or data files, using CODECs, which can lead to data loss and corruption, especially for critical transactions.

Innovation Solution

Implementing a clear channel mode in gateway devices to detect V.110 data frames and pass them as unmodified data into packets, avoiding the use of CODECs and thus preventing data loss.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If CODECs are used to process information in TDM frames, then bandwidth efficiency is improved and performance is enhanced, but data information integrity deteriorates due to potential data loss and corruption

Engineering Contradiction:

Improvebandwidth efficiencyVSAvoiddata information integrity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The gateway device segments information processing by detecting frame types and routing voice frames to CODECs for compression while directing data frames through a separate unmodified path, allowing bandwidth efficiency for voice while preserving data integrity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A frame type detector acts as an intermediary component that identifies whether incoming TDM frames contain voice or data information and directs them to appropriate processing paths, preventing data frames from being corrupted by voice-optimized CODECs

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If gateway devices reformat TDM frames into packets, then network versatility is improved by enabling IP protocol usage, but data information accuracy deteriorates due to format conversion errors

Engineering Contradiction:

Improvenetwork protocol compatibilityVSAvoiddata format accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The gateway device applies different processing qualities to different frame types: voice frames undergo reformatting and CODEC processing for IP network compatibility, while data frames receive minimal processing to preserve their original format and accuracy

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Instead of converting all TDM frames through the same reformatting process, the system inverts the approach by detecting data frames and protecting them from conversion, allowing only voice frames to undergo standard TDM-to-packet transformation

Inventive Principle:

Principle #13The other way round (Inversion)

3Loss of substance

If silence removal is applied to voice information, then bandwidth efficiency is improved by reducing transmitted data volume, but data information completeness deteriorates when applied to data frames

Engineering Contradiction:

Improvedata volume reductionVSAvoiddata completeness

Core Design Contradiction:

Loss of substanceVSLoss of information

Solution Approach 1:

The gateway device dynamically adjusts processing based on frame type detection: silence removal algorithms are activated for voice frames to reduce bandwidth usage, while the same algorithms are deactivated for data frames to ensure complete and accurate transmission

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7729332B2Technique for transferring data from a time division multiplexing network onto a packet network

Publication Date: 2010.06.01 CISCO TECHNOLOGY INC

AI summary

A technique for processing data carried by a Time Division Multiplexing (TDM) channel in a TDM network. A data stream associated with a TDM channel is monitored to determine if it contains data frames. If so, the channel associated with the data stream enters a clear channel mode which causes data in the data stream to be placed in packets for transfer over the packet network without being modified. Provided the data stream continues to carry data frames, the data stream stays in clear channel mode. After the data stream data no longer carries data frames, the channel exits clear channel mode.