4.1.9 Display Information .........................................................................................................954.1.10 DND (Do Not Disturb) .....................................................................................................964.1.11 Door Open ......................................................................................................................974.1.12 Doorphone Call ..............................................................................................................985 Features and Configurations—E ........................................................1015.1 E ......................................................................................................................................1025.1.1 EFA (External Feature Access) ....................................................................................1025.1.2 Emergency Call ............................................................................................................1035.1.3 Executive Busy Override ..............................................................................................1035.1.4 Extension Dial Lock ......................................................................................................1045.1.5 Extension Feature Clear ...............................................................................................1055.1.6 Extension PIN (Personal Identification Number) ..........................................................1065.1.7 Extension Port Configuration ........................................................................................1085.1.8 External Relay ..............................................................................................................1095.1.9 External Sensor ............................................................................................................1106 Features and Configurations—F ........................................................1136.1 F ......................................................................................................................................1146.1.1 Fixed Buttons ...............................................................................................................1146.1.2 Flash/Recall/Terminate ................................................................................................1166.1.3 Flexible Buttons ............................................................................................................1176.1.4 Flexible Numbering/Fixed Numbering ..........................................................................1206.1.5 Floating Extension ........................................................................................................1266.1.6 FWD (Call Forwarding) .................................................................................................1276.1.7 FWD/DND Button, Group FWD Button ........................................................................1317 Features and Configurations—G ........................................................1357.1 G .....................................................................................................................................1367.1.1 GROUP FEATURES ....................................................................................................1368 Features and Configurations—H ........................................................1418.1 H ......................................................................................................................................1428.1.1 Hands-free Answerback ...............................................................................................1428.1.2 Hands-free Operation ...................................................................................................1438.1.3 Headset Operation .......................................................................................................1438.1.4 HOSPITALITY FEATURES ..........................................................................................1458.1.5 Host PBX Access Code (Access Code to the Telephone Company from a HostPBX) .............................................................................................................................1458.1.6 Hot Line ........................................................................................................................1479 Features and Configurations—I ..........................................................1499.1 I .......................................................................................................................................1509.1.1 ICD GROUP FEATURES .............................................................................................1509.1.2 ICD Group Features—Group Call Distribution .............................................................1539.1.3 ICD Group Features—Log-in/Log-out ..........................................................................1569.1.4 ICD Group Features—Outside Destinations ................................................................1599.1.5 ICD Group Features—Overflow ...................................................................................1619.1.6 ICD Group Features—Queuing ....................................................................................1639.1.7 ICD Group Features—Supervisory ..............................................................................1669.1.8 ICD Group Features—VIP Call ....................................................................................1679.1.9 Idle Extension Hunting .................................................................................................1689.1.10 INCOMING CALL FEATURES .....................................................................................1709.1.11 Intercept Routing ..........................................................................................................1739.1.12 Intercept Routing—No Destination ...............................................................................177Document Version 2013-05 Feature Manual 9Table of Contents