5-96 DBS 576 (USA) issued October 2000 576-36-700Chapter 5. Key Telephone Features Section 700 - OperationRelated Programming• FF1-0-03: Extension COS (Direct Trunk Access)• FF3: Extension COSConsiderations• N/AMCO Line PreferenceMCO Line Preference allows you to place an outside call by simply picking up the handset. When yougo offhook, the MCO 1 trunk group is automatically accessed.OperationTo place a call using MCO Line Preference:Hardware Requirements• N/ARelated Programming• FF1: MCO Trunk Access• FF3: MCO• FF5-2: MCO Trunk Groups (Outbound)Considerations• You can press the ON/OFF key to get intercom dial tone.MCO Trunk AccessThe System supports up to 5 MCO groups for each MCO tenant group. You can seize an idle trunkfrom the MCO trunk group by entering the MCO access code.OperationTo seize an idle trunk:Action Result1. Lift the handset. • Outside dial tone• CO XXX displays (where XXX = trunknumber)2. Dial the phone number. Dialed phone number displaysAction Result1. Lift the handset or press the ON/OFF key. Intercom dial tone