I currently have several 2821 routers located across multiple sites. The routers are only used for outbound 911 calls. They have 2 analog phone lines attached to a 4 port FX0 card. I have been using the csim command to remotely test to make sure the lines are up and functioning. Is there a way to take one of the ports of the FX0 card offline, so when I use the csim command to test, it will test the second line as well?