Hi, imagine this situation: box A is sort of an entertainment station, and it is using PA for sound. Now box B is an asterisk telephony server. Now, when the phone rings, it would be great to reduce the valume of sound or mute it, and restore when the phone is hung up. Is there anything ready to use? When googling for this subject, I saw sort of a complete gui remote control (reverb). However, the telephony box will likely have neither graphics nor sound software installed Regards Wolfgang -- gpg key: 92FCFB25