Full-duplex Speakerphone

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This chapter explains how to use the Full-duplex Digital Speakerphone (DKT2020-FDSP).

The DKT2020-FDSP is designed to allow both parties of a speakerphone call to speak simultaneously. This eliminates “clipping” and enables true two-way conversation. However, when two parties are talking simultaneously, the performance is not as good as on a handset. The technology necessitates some volume loss in this situation.

An optional External Microphone can be connected for improved performance. However, the External Microphone is extremely directional and should only be used in certain applications. The telephone also provides half-duplex/full-duplex manual selection.

The DKT2020-FDSP has three operational modes for enhanced microphone use (Best, Good and Normal). These modes allow adjustments for different room acoustical characteristics. Choosing either the Internal or External Microphone (RFDM) and proper operational mode should be pre-selectedby the system installer.

When the External Microphone option is installed, the telephone’s Internal Microphone is disabled on all but Voice First Handsfree Answerback calls and OCA calls. The External Microphone is powered by the phone (no batteries are required) and does not need to be turned off when not in use.

Choosing either the Internal or External Microphone is performed on the DIP switch 5, located under the keystrip (see Figure 4).

Strata DK Digital Telephone 10/01

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Toshiba DK manual Full-duplex Speakerphone, 117

DK specifications

Toshiba DK (Disk Controller) series has established itself as a pivotal component in modern storage solutions, especially in the realms of personal computing and enterprise systems. This innovative disk controller family is designed to enhance performance, efficiency, and reliability, catering to a diverse range of applications from consumer electronics to data centers.

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Another significant characteristic of the Toshiba DK series is its robust error correction capabilities. Equipped with sophisticated Error Correction Code (ECC) algorithms, it can detect and correct multiple errors that may occur during data transmission. This aspect is crucial for maintaining data integrity, especially in environments where data is continuously being read and written, such as in enterprise storage solutions.

Furthermore, the Toshiba DK series embraces cutting-edge NAND flash technology. The controllers are engineered to work seamlessly with NAND flash memory, achieving impressive read and write speeds while optimizing endurance. This synergy results in high-performance solid-state drives (SSDs) that are not only faster but also more reliable than traditional hard drives.

Energy efficiency is another hallmark of Toshiba DK. The controllers feature power management capabilities that dynamically adjust power consumption based on workload requirements. This not only leads to lower operational costs but also extends the lifespan of the storage device by minimizing unnecessary wear and tear.

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In conclusion, Toshiba DK series exemplifies excellence in disk controller technology with its intelligent caching, robust error correction, advanced NAND flash integration, energy efficiency, and broad interface support. These features make Toshiba DK a preferred choice for manufacturers and users alike, ensuring they meet the evolving demands of contemporary data storage.