Hello list. I'm going te explain my trouble. I have my asterisk with a TDM400P with 4 FXS channels. Two ports are connected to a Panasonic PBX (it's working fine), and others two ports are connected to an Alcatel 4200 PBX (but it doesn't anwer). I connected to a CO port (where i had a pstn line). When I call to the Alcatel PBX, the asterisk show me in it console that es ringing but never anwer. I had configured with diferent signalling: 1- zaptel.conf -> fxoks=3,4 zapata.conf -> signalling=fxo_ks 2- zaptel.conf -> fxols=3,4 zapata.conf -> signalling=fxo_ls 3- zaptel.conf -> fxogs=3,4 zapata.conf -> signalling=fxo_gs I put 3,4 because 1,2 are connected to Panasonic PBX (working with ks). But the PBX never anwer. I also change the zone (because the PBX es french): zaptel.conf -> loadzone=fr defaultzone=fr But it doesn't work. My files: * zaptel.conf loadzone=us defaultzone=us fxoks=1-4 * zapata.conf [channels] busydetect=yes busycount=10 cancallforward=yes callprogress=no echocancel=yes echocancelwhenbridged=yes echotraining=yes immediate=no signalling=fxo_ks rxgain=0.0 txgain=0.0 transfer=yes usecallerid=no context=remotas1 channel => 1 context=remotas2 channel => 2 context=remotas3 channel => 3 context=remotas4 channel => 4 I don't know what to try. Please help me. Thanks. Jos? Luis G?mez -- Jos? Luis G?mez Qualis Information Technology Av. Rivadavia 2553, PB Of. 43 EP 0342-4565684 int 102 www.qualis.com.ar Soporte 0810-8880022 Santa Fe - Argentina