Hello, I have setup my first asterisk using an isdn card and i4l. I can make calls from the fixed network to a sip phone via asterisk and vice versa. Unfortunately I do not get any ring (or busy) tone at my Grandstream, when making a call via the isdn card and i4l. The problem of no ring tone only occurs in this one direction. The other way is okay. Is this, because in indications.conf German signals are not defined or is this a missing feature of i4l? I googled and found http://lists.digium.com/pipermail/asterisk-users/2002-October/005355.html which let me believe, the problem has been addressed long time ago. The patch there seems not to be integrated in asterisk, or am I wrong? Thanks for any answer. Norbert