Got a strange problem. I’ve had Asterisk running fine for a month or so in our office. Today, suddenly, all the phones have stopped producing a dialing tone when making outgoing calls.
I.e. when we call someone we cannot hear the phone being called, but when the person we are calling picks their phone up we get normal voice coming through phone.
Running a 1 month old version of HEAD with Grandstream GXP-2000 phones on an AVM c4 card in the UK with 3xISDN 2 lines.