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Voice module receives DECT 6.0 upgrade

Posted: 25 May 2007 ?? ?Print Version ?Bookmark and Share

Keywords:cordless voice module? CVM? Wi-Fi?

cordless voice module with DECT 6.0 from SiTel

SiTel Semiconductor BV has announced the upgrade of their cordless voice module (CVM) with the DECT 6.0 version.

The CVM integrates a radio transceiver and baseband with a complete protocol stack on a single chip. This module enables system designers to design more easily and cost-effectively a DECT or 2.4GHz cordless application. This means that the CVM adds cordless phone functionality to their products.

The module is now available with DECT 6.0 support, which is the recently allocated frequency band (1,920-1,930MHz) in the U.S. for Unlicensed Personal Communication Services (UPCS). The standard CVM DECT Flash version can be used, by just re-Flashing the module with the new DECT 6.0 software.

The modules are used in cordless telephones, POS terminals, intercom systems, cordless conference phones and cordless headsets.

Aside from the quiet, clean spectrum, DECT 6.0 offers solid security standards, ensuring private conversations and better range than 2.4GHz or 5.8GHz phone systems.

Module flavors
There are four different hardware versions of the CVM available. The SC14CVM2.4, for the 2.4GHz ISM band, uses SiTel's SC14428 baseband controller, a CMOS chip optimized to handle all the audio, signal and data processing for a 2.4GHz ISM digital band handset or base station. The complete protocol stack and application interface are integrated in ROM-code. RF for the SC14CVM2.4 is provided by LMX4268, a radio transceiver integrated circuit optimized for the 2.4GHz system. As a result, the module has a typical range of 350m outside and 75m indoors. LMX4268 is a complete DCT radio transceiver compliant with the FCC standard.

SC14CVM1.9 is optimized for the DECT standard. It is also equipped with SiTel's SC14428 baseband controller and with the LMX4168, a radio transceiver integrated circuit. It has the same specifications as the LMX4268, but is specially designed for the 1.9GHz band and is compliant with the ETSI TBR06 standard.

Flash versions are available for both versions, to be able to change firmware for specific applications.

For DECT 6.0, the company says it makes use of the 1.9GHz Flash version to upgrade the module with this new software code.

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