I'm having a problem with one port in an ATA Box, I can receive calls properly from any internal and external phone but when I try to call from the phone connected to port 2 in my ATA I get a busy line signal but the line is available. The problem occurs just in port 2 because when I try the same from port 1 it works well. I've configured the ATA from the beggining and also copied the configuration from another that is working and still same. Any idea?
Thanks a lot for your help!