> 5.5.1 | Activating Siemens Multiplexer Protocol Version 4

> The procedure of activating multiplexer protocol version 4 is the same as in all previous versions. So, there are two ways to start version 4:

> • | If you are using your own multiplex sources take care that the TE and MS agree upon value 004 as described in Section 5.2 and Section 5.4.

> • | The ready-to-use WinMux v3.x.x.x driver (v3.0.0.0 or later) automatically launches multiplexer protocol version 4 if the MS supports the same version. If the firmware of the MS does not yet incorporate version 4 the next lower common version will be negotiated.