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DECT 7 & Wireless Headset Technology | Sonetics
https://www.soneticscorp.com/technology/#:~:text=DECT%20and%20DECT6%20systems%20typically%20have%20an%20audio,phone%20call%3B%20the%20quality%20is%20compressed%20and%20limited.
DECT Frequencies, Channels, Frequency Bands | …
https://www.electronics-notes.com/articles/connectivity/dect-cordless-telephones/channels-frequencies-bands.php
In the US the DECT frequency allocation is 1920-1930 MHz. This is known as UPCS band. However this DECT frequency allocation is not an exclusive frequency allocation, but it is generally sufficiently free of other users to achieve similar interference-free operation. Channel spacing is typically 1.728 MHz.
DECT 7 & Wireless Headset Technology | Sonetics
https://www.soneticscorp.com/technology/
DECT and DECT6 systems typically have an audio bandwidth of 300Hz to 3.4kHz. This results in call quality similar to an old telephone what you typically hear in a cell phone call; the quality is compressed and limited.
What is DECT? | GetVoIP
https://getvoip.com/library/what-is-dect/
PBX networking vendors such as Cisco promote the adoption of handsets that use VoIP over local Wi-Fi as the replacement for DECT, but this imposes significant overhead on the design and complexity of the Wi-Fi network in order to provide roaming, coverage and reservation of bandwidth, not to mention quality of service.
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