Hi sepay!
Thanks for your answer! I was able to solve the problem with the night mode. I just had to copy the "reroute position" entry onto all trunks, now when the night mode is activated with *8* the answering machine is answering
concerning the other problem, i figured out, that on the same local where the phone and answering machine were connected, a really old dial-operated phone is connected there as well (est. 30 years old ) which still WORKS with the answering machine - so this seems to have a "mechanical" cause (maybe inside the jack there's something wrongly connected) - but i can live with that.
