at remote-end router WAN interface it shows DCD=up DSR=down DTR=up RTS=up CTS=up and local-end router is fine with no error and everything is up and ping over this WAN connection to the remote network then what can be the cause of the remote-end DSR=...

how to configure or what are the main points to configure for a frame relay ospf connectivity between cisco and nortel router ? (as without ospf it is working fine by static route)

carrier transitions counter is increasing, while all other output of sh controller for a serial interface are normal and healthy for a 2MB lease line, let me know the detail process for which i am getting the carrier transition counter increasing , i...