Can anyone advise how I would find out what device has caused an ISDN call on a Cisco 2621 with an ISDN card. Our main circuit isn't going down but the ISDN line sometimes comes up - wasting money.
they may not give u much, but they may get u started.. try the debug commands too...
u could just drop your config so we can look for what could be causing your line to come up.. if you've configured DDR, u may have allowed all IP to be interesting traffic, or u may have configured a routing protocol and not indicated your ISDN interface as passive..
it could be many things.. drop your config, and we'll help u out..
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