Hello Sensotronic,
The Beosystem 2500 is two-way mode and will work perfectly with a Beolink 5000 and of course a Beolink 7000.
Very useful because in daylight it’s a bit difficult to see the amber letters on the display.
Have you thought to change the coloured front panels?
Very cheap to find them (in new condition) on ebay and each time you change colour it’s just like if you would own a new system! 
Marc
