Feature Manual References6.1.3 Flexible ButtonsOperating Manual References1.3.52 Private Network Features—CLIP (Calling Line Identification Presentation)1.3.53 Private Network Features—CLIR (Calling Line Identification Restriction)1.3.55 Private Network Features—COLR (Connected Line Identification Restriction)3.1.16 CO Line AccessDescriptionThere are three methods of accessing a CO line.Method Description OperationIdle Line Access (LocalAccess)Selects an idle CO lineautomatically from the assignedtrunk groups.Dial the Idle Line Access number orpress a L-CO button.Trunk Group Access Selects an idle CO line from thecorresponding trunk group.Dial the Trunk Group Access numberand a trunk group number, or press aG-CO button.S-CO Line Access Selects the desired CO linedirectly.Dial the S-CO Line Access numberand the CO line number, or press theS-CO button.Conditions• Class of Service (COS) programming determines the trunk groups available for making calls.• CO Line numbers can be referred on a CO line port basis.• Button AssignmentA flexible button can be customized as a G-CO, L-CO, or S-CO button as follows:Type Assignable parameterLoop-CO (L-CO) Any trunk group that is made available for Idle Line Access throughsystem programming is applied.Group-CO (G-CO) A trunk group is assigned.Single-CO (S-CO) A specified CO line is assigned.It is possible to assign:– the same CO line to the S-CO button and to a G-CO button.– the same trunk group to more than one G-CO button.– more than one L-CO button.Dialing the CO Line Access number selects a CO button according to the following priority: S-CO ® G-CO® L-CO• Direct CO Line AccessDocument Version 2009-12 Feature Manual 553.1.16 CO Line Access