4.1.11 Door Open ......................................................................................................................864.1.12 Doorphone Call ..............................................................................................................875 Features and Configurations—E ..........................................................895.1 E ........................................................................................................................................905.1.1 EFA (External Feature Access) ......................................................................................905.1.2 Emergency Call ..............................................................................................................915.1.3 Executive Busy Override ................................................................................................915.1.4 Extension Dial Lock ........................................................................................................925.1.5 Extension Feature Clear .................................................................................................935.1.6 Extension PIN (Personal Identification Number) ............................................................945.1.7 Extension Port Configuration ..........................................................................................955.1.8 External Relay ................................................................................................................965.1.9 External Sensor ..............................................................................................................976 Features and Configurations—F ........................................................1016.1 F ......................................................................................................................................1026.1.1 Fixed Buttons ...............................................................................................................1026.1.2 Flash/Recall/Terminate ................................................................................................1046.1.3 Flexible Buttons ............................................................................................................1056.1.4 Flexible Numbering/Fixed Numbering ..........................................................................1076.1.5 Floating Extension ........................................................................................................1136.1.6 FWD (Call Forwarding) .................................................................................................1146.1.7 FWD/DND Button, Group FWD Button ........................................................................1187 Features and Configurations—G ........................................................1217.1 G .....................................................................................................................................1227.1.1 GROUP FEATURES ....................................................................................................1228 Features and Configurations—H ........................................................1278.1 H ......................................................................................................................................1288.1.1 Hands-free Answerback ...............................................................................................1288.1.2 Hands-free Operation ...................................................................................................1298.1.3 Headset Operation .......................................................................................................1298.1.4 HOSPITALITY FEATURES ..........................................................................................1308.1.5 Host PBX Access Code (Access Code to the Telephone Company from a HostPBX) .............................................................................................................................1308.1.6 Hot Line ........................................................................................................................1329 Features and Configurations—I ..........................................................1359.1 I .......................................................................................................................................1369.1.1 ICD GROUP FEATURES .............................................................................................1369.1.2 ICD Group Features—Group Call Distribution .............................................................1399.1.3 ICD Group Features—Log-in/Log-out ..........................................................................1429.1.4 ICD Group Features—Outside Destinations ................................................................1459.1.5 ICD Group Features—Overflow ...................................................................................1479.1.6 ICD Group Features—Queuing ....................................................................................1499.1.7 ICD Group Features—Supervisory ..............................................................................1519.1.8 ICD Group Features—VIP Call ....................................................................................1539.1.9 Idle Extension Hunting .................................................................................................1549.1.10 INCOMING CALL FEATURES .....................................................................................1559.1.11 Intercept Routing ..........................................................................................................1589.1.12 Intercept Routing—No Destination ...............................................................................1629.1.13 Intercom Call ................................................................................................................1639.1.14 Internal Call Block ........................................................................................................1648 Feature Manual Document Version 2009-12Table of Contents