Hi guys i have a problem with an isdn (E1) pri works fine but once or twice a week i got ring requested on channel X then every channel get blocked so i should restart the pbx to fix it, i try not using cdr mysql, several linux distros and every 1.2.x asterisk version, even i try to ask (sensei Mark still waiting ....) the weird thing is that i have the same problem with three more servers connected to the same telco and the same local exchange (ericsson) So any hint more that welcome Thanks Br Yelson