Hi, If I am interfacing with a legacy PBX system.... a few questions. #1 What do I need to do to configure 1 port on a dual port card as pri_cpe and another as pri_net? Do I just change my config half-way through the zaptel.conf file? #2 When I setup span=1,1,0,esf,b8zs doesn't the esf indicate that I am using 'Robbed Bit', but then in /etc/asterisk/zapata.conf I have switchtype=national, which seems to indicate 'ISDN signaling'. That is the configuration I have to my current CLEC.. so am I using robbed bit... or ISDN signaling? I DO get caller-id on inbound.