https://www.analog.com/jp/resources/design-notes/ds2141a-ds2143-ds2151-ds2153-interfacing-to-the-mitel-mt8980d.html
DS2141A, DS2143, DS2151, DS2153 Interfacing to the Mitel MT8980D | Analog Devices
This application note describes how the DS2141A, DS2143, DS2151, and DS2153 interface to the Mitel MT8980D.
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