Download the package from a reputable electronics community site like The Engineering Projects or Eblal Health Care . Ensure you have the following two essential files after extracting the zip: MT8870.LIB (The component data) MT8870.IDX (The library index) 2. Install into Proteus
: It's widely used in telecommunication systems for dial tone decoding and other control signals. mt8870 proteus lib 35
To use the MT8870 in your simulation, you must manually add the library files (typically files) to your Proteus installation: How to Add Arduino Library in Proteus 8 [100% Working] 28 Nov 2020 — Download the package from a reputable electronics community