I have bought some Wildcard X101P and Generic Clones for my Asterisk PBX. Now I can place and get calls through the lines/channels. Everything is okay but the problem is when I call outside through our PSTN line, after few minutes the connection breaks down. The same thing happens in case of incoming calls. I have checked my wiring and don't face that problem using direct connection. Whenever I call using that card, after few minutes I get a RED Alarm and if I reconnect the line, the Alarm is cleared. Therefore, I cannot continue my conversation through that line. Can anybody help me regarding this problem?