I want to use the NMS to collect our T1 usage over the time. "show isdn active" can give me the current number of calls occuring in the gateway. Our gateways are 3845, 3825, 2811 service routers. Is there any MIB which can tell this statistics? I need load it into the NMS. Thanks a lot!!!
Yes, in fact, there is an EEM policy already written to do this. See http://forums.cisco.com/eforum/servlet/EEM?page=eem&fn=script&scriptId=2283 . This will allow you to specify a regular expression to extract from the CLI output, then put that value into the EXPRESSION-MIB.
The CISCO-POP-MGMT-MIB is probably your best bet, but it isn't fully supported on ISR platforms due to the triple interface numbering scheme. The
object you found, cpmActiveDS0s, should work as should cpmDS1ActiveDS0s. Depending on the PRI configuration, isdnBearerOperStatus may also be useful for you.