Glad I can help you.

Make sure you get a adaptor for input (like this one: http://www.svideo.com/scart.html).

Some do have a switch to control input/output.

Also make sure the connector has a stereo sound input, as the digital coax inputs on the Avant are for VTape and AV ports only.

Then you can upgrade your Avant in order to control the ATV directly from Beo4! Ask your dealer.

Good luck 

Cool, I'll go for such an adapter.

Additional questions:
- Is there a special reason to use the decoder scart input and not one of the others?
- I would buy an adapter that offers also a S-Video (S-VHS) input. Do you know whether this will work with the Avant scart input? I read the scart input has to be S-VHS "enabled".
- Concerning Beo4 control: Is this upgrade a software upgrade? I read something here in this forum about a version 4.7j but thought that was only for the US version of the Avant. I've no STB controller. Is this a requirement?

 Thanks again for you help!

I'll try to answer:

- Not sure I understand the question: if you have AV and VTape inputs already busy, then you are left only with the Decoder input... Otherwise, you can use one of the first inputs and use RGB signal which should be better compared to s-video and CVBS.

- If you use the Decoder input, according to the specs (http://www.beoworld.org/prod_details.asp?pid=571), it is CVBS in/out only which means composite and not s-video. If you buy an adapter that has both, you must use composite to transport the proper signal.

- Yep, the optional STB controller is a requirement. You need to run an IR-blaster from Avant to ATV and if you don't have the IR-blaster plug you don't have the STB controller. Otherwise, this is a software upgrade done by replacing a chip in the Avant. Not sure for the version though. 

Ralf