Operations 1-91.2 Proprietary Telephone SettingsBasic OperationsLine Access ButtonsOne of the following 3 types of CO buttons must be used to seize an outside (CO) line whenmaking a call.• Group-CO (G-CO) button• Other-CO (O-CO) button• Single-CO (S-CO) button• A flexible CO button can be assigned as a Line Access Button (G-CO, O-CO or S-CO) inProprietary Telephone Settings. Once a flexible CO button is assigned as a Line AccessButton, it provides the line status using lighting patterns and color indication. Please refer to“2.2 LED Indication”.• You can set the G-CO and S-CO buttons on one telephone. Incoming and outgoing calls onthe line are shown on the button in the following priority. S-CO > G-COSingle-CO (S-CO) ButtonA S-CO button is an outside (CO) line access button. This allows you to access a specific lineby pressing a S-CO button. An incoming call can be directed to a S-CO button.!!!!PTPress the programmable button. Dial 0. Enter an outside (CO) line number (1 through 6).0Press STORE.CO outside (CO) line no.AUTO DIALSTORE• Only one S-CO button can be assigned to an outside (CO) line.• The same outside (CO) line can be assigned as a S-CO button and G-CO button.PTOther CO (O-CO) ButtonOutside (CO) lines which are not assigned to S-CO or G-CO buttons can be assigned to aflexible CO button on a proprietary telephone. The assigned button serves as the O-CO button.An incoming call, on assigned outside (CO) lines, arrives at the O-CO button. To make anoutside call, you simply press the designated O-CO button.Press the programmable button. Press STORE.AUTO DIALSTORECODial .