Section 700 - Operation Chapter 5. Key Telephone Features576-36-700 DBS 576 (USA) issued October 2000 5-61OperationTo automatically redial the last number dialed:Hardware Requirements• N/ARelated Programming• FF1-0-03: Extension COS (Intercom Redialing)• FF3: Extension COSConsiderations• Extension Class of Service (COS) determines whether Last Number Redial can be used for bothintercom and CO calls or CO calls only.Line AppearancesDescriptionThe System provides three types of line appearances• Direct Station Select (DSS) / Busy Lamp Field (BLF) Appearances• Direct Line (DL) Appearances• MCO Line AppearanceDSS/BLF AppearancesWhen a DSS/BLF key is programmed, it automatically provides one-touch dialing and DSS and BLFfor the assigned extension numbers. If desired, the DSS/BLF key can also provide ring or delayed ringmonitor. For example, you can set extension A as a DSS/BLF ringing key on extension B. Whenextension A rings, the LED of the DSS/BLF key on extension B flashes and the phone rings.Ringing or delayed ringing can be set on extensions which have a BLF key. The LED of the DSS/BLFkey flashes green during ringing and the display shows the BLF extension number.When extension A is in use, the LED of the DSS/BLF key on extension B lights red. If one extensionhas the Call Forwarding or Do-Not-Disturb (DND) feature activated, the DSS/BLF key lights green.Action Result1. Lift the handset or press the ON/OFF key.OR...Press a vacant CO key or enter a trunk access code.• Outside dial tone• CO XXX displays (where XXX = trunknumber)2. Press the REDIAL key. Last number dialed displays3. Complete the call and replace the handset or press the ON/OFF key.Line key LED turns red, then goes off.
