One more strange thing I've noticed. After loading mISDN, the driver keeps L1 and L2 links up. This is strange because my telco is shutting them down after a few seconds. When first calls are processed through these 3 ports links are going down which is correct behavior. This is my "misdn show stacks" after the driver is loaded:
* Port 1 Type TE Prot. PMP L2Link UP L1Link:UP Blocked:0 Debug:0
* Port 2 Type TE Prot. PMP L2Link UP L1Link:UP Blocked:0 Debug:0
* Port 3 Type TE Prot. PMP L2Link UP L1Link:UP Blocked:0 Debug:0
* Port 4 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Blocked:0 Debug:0
I've waited almost 15 minutes and links aren't going down. But after few calls are accomplished everything works like it should:
* Port 1 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Blocked:0 Debug:0
* Port 2 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Blocked:0 Debug:0
* Port 3 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Blocked:0 Debug:0
* Port 4 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Blocked:0 Debug:0