: You will need a serial or USB-to-RJ45 programming cable. Note that standard Ethernet cables will not work; the cable requires an internal converter circuit. The DIY Route
The TM8115 has separate speakers for the internal front speaker, external rear speaker, and PA output. In TPS, you must route specific traffic. tait tm8115 programming software
It is occasionally hosted on radio enthusiast sites like HamFiles or TARPN . Tait TM8105 Notes - Tarpn : You will need a serial or USB-to-RJ45 programming cable