we would like to connect an old paging system to our CCM 6.1 system. So we have a FXO port on a 2811 router connected to this paging system. The paging system is currently configured with something called "power provided externally" (translated from German, not sure what the proper technical term is). In principle it is the FXO port that should provide the power, which is strange. As a reconfiguration of the paging system requires soldering, is it possible to configure the FXO port to provide power?