| Description | Binds filter groups to modems, identifying for each modem
          the upstream and downstream filter groups that apply to packets
          for that modem.  Normally, this table reflects the filter group
          values signaled by DOCSIS Registration, although values may be
          overridden by management action.
          
          For each of the columns in this table, zero is a distinguished
          value, indicating that the default filtering action is to be
          taken rather than that associated with a filter group number.
          Zero is used if the filter group is not signaled by DOCSIS
          registration. |