server 106 sends an error indication to the terminal 110 at display operation 310 the terminal 110 displays the error indication such as the message 510 of screenshot 510 in fig7 if query operation 306 detects that the service name does not already exist then the terminal 110 receives the primary circuit name lport name from the user in entry field 504 of fig6 at receive operation 312 and sends it to the management server the management server 106 then detects whether the primary circuit 39 s mib already has a service name associated with it at query operation 314 if query operation 314 detects that the primary circuit 39 s mib already has a service name associated with it then an error notice is provided to the terminal 110 at send operation 316 the terminal 110 then displays the error indication such as the message 516 of screenshot 514 in fig8 at display operation 318 if query operation 314 detects that the primary circuit does not already have a service name associated with it then the terminal 110 receives the backup circuit name from the user in entry field 506 at receive operation 320 and sends it to the management server 106 operational flow then continues to query operation 322 of fig4 where the management server 106 detects whether the backup circuit exists in the network such as by referencing the mib corresponding to the specified backup circuit if the backup circuit does not exist then the management server 106 sends an error indication to the terminal 110 at send operation 324 the terminal.