Hi, I have an asterisk server with a quad E1 card, Span 1 to PSTN, and calls flowing fine to and from the PSTN. I would now like to connect a legacy PBX to span 2 of the E1 card, I made a crossover, configured zapta.conf and zaptel.conf. Zttools shows both spans as up and active, but I am now stuck on how to a) Make calls out from legacy PBX to pstn and b) how to receive calls from the PSTN E1 bridged via span 1 onto span 2 and into the legacy pbx. c) let the two switches extensions calls each other. I have reviewed the WiKi and the documents cover the x-over cable & the settings for the legacy pbx, but not the steps (config) needed in I guess extensions.conf - If someone could share experience and a sample configuration to achieve this, I would be grateful. Fyi from the 100 or so ddi's on the PSTN E1 I would like to share 50/50 between the switches. Do all 100 ddi's have to be present in both extensions.conf? Regards Magnus