Hello, There is a config option in ss7.conf ; Reply incoming call with CON rather than ACM and ANM use_connect => yes is this has any relation with some people problem about no ring back tone? Note : i have no hardware otherwise i will test it. Thanks atik > Date: Mon, 13 Mar 2006 01:51:29 +0500 > From: Anton <anton.vazir@xxxxxxxxx> > Subject: [asterisk-ss7] RBT > To: asterisk-ss7@xxxxxxxxxxxxxxxx > Message-ID: <200603130151.30017.anton.vazir@xxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > > For those who still have a Ring Back problem, please notice > that this is caused by the differencies in the ANSI and ITU > specs of the SS7, for the time being, until fixed by > Sifira, attached is the quick patch to confor ITU behavior > - so there will be an RBT.