22 MXU2 Manual Appendix A: Security AccessAppendix A: Security AccessSecurity Access ModeThe MXU2 provides administrators with four modes of security access (set in the System Configurationmenu) in addition to the login security. These modes determine how the user’s security class (set on theUser Configuration menu) permits access to computers that are assigned channel security classdesignations (set on the Channel Configuration menu).Security classes are represented by a two digit alphanumeric designation.¾ The first digit, called the level, is designated by a letter. Letters A to P are available torepresent the level. A is the highest level and P is the lowest level. As the level designationproceeds from A towards P, security access decreases.¾ The second digit, called the group, is designated by a number. Numbers 0 to 9 are availableto represent the group. 0 is the highest group designation and 9 is the lowest. As the groupdesignation proceeds from 0 towards 9, security access decreases.Taken together, the entire security class is represented by the designation [level group]. For example,A0 is the highest security class and P9 is the lowest security class. As you move from left to right anddown the security class table (Figure 18) from A0 to P9, security access decreases. So a user with thesecurity class B5 would have broader, higher access than a user with the security class of M8.) Users with admin privileges can access any computer regardless of the mode.AO is highest HIGHER ⇒ to ⇒ LOWERA0 A1 A2 A3 A4 A5 A6 A7 A8 A9B0 B1 B2 B3 B4 B5 B6 B7 B8 B9C0 C1 C2 C3 C4 C5 C6 C7 C8 C9D0 D1 D2 D3 D4 D5 D6 D7 D8 D9E0 E1 E2 E3 E4 E5 E6 E7 E8 E9F0 F1 F2 F3 F4 F5 F6 F7 F8 F9G0 G1 G2 G3 G4 G5 G6 G7 G8 G9H0 H1 H2 H3 H4 H5 H6 H7 H8 H9I0 I1 I2 I3 I4 I5 I6 I7 I8 I9J0 J1 J2 J3 J4 J5 J6 J7 J8 J9K0 K1 K2 K3 K4 K5 K6 K7 K8 K9L0 L1 L2 L3 L4 L5 L6 L7 L8 L9M0 M1 M2 M3 M4 M5 M6 M7 M8 M9N0 N1 N2 N3 N4 N5 N6 N7 N8 N9O0 O1 O2 O3 O4 O5 O6 O7 O8 O9HIGHER⇓to⇓LOWERP0 P1 P2 P3 P4 P5 P6 P7 P8 P9HIGHER⇓to⇓LOWERHIGHER ⇒ to ⇒ LOWER P9 is lowestFigure 18 Security Class Table – Example of What a D5 User Can AccessGray represents 2 Digit Level Security Access Mode & black boxes represent Level/Group Security Access Mode