[asterisk-users] ring requested on channel

[Yelson Vivas]

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