8 Feature Guide1.15.7 Automatic Fax Transfer................................................................................................... 1121.15.8 External Sensor .............................................................................................................1131.15.9 External Relay Control ................................................................................................... 1141.16 Caller ID Features......................................................................................................... 1161.16.1 Caller ID ......................................................................................................................... 1161.16.2 Incoming Call Log .......................................................................................................... 1201.17 Message Features ........................................................................................................ 1221.17.1 Message Waiting............................................................................................................ 1221.17.2 Absent Message ............................................................................................................ 1231.18 Proprietary Telephone (PT) Features ......................................................................... 1251.18.1 Fixed Buttons ................................................................................................................. 1251.18.2 Flexible Buttons.............................................................................................................. 1261.18.3 LED Indication................................................................................................................ 1281.18.4 Display Information......................................................................................................... 1311.19 Voice Mail Features ...................................................................................................... 1321.19.1 Voice Mail (VM) Group ................................................................................................... 1321.19.2 Voice Mail DPT (Digital) Integration ............................................................................... 1341.19.3 Voice Mail DTMF Integration .......................................................................................... 1401.20 Portable Station (PS) Features ................................................................................... 1461.20.1 Portable Station (PS) Connection .................................................................................. 1461.20.2 PS Ring Group ...............................................................................................................1471.20.3 Wireless XDP Parallel Mode .......................................................................................... 1511.20.4 PS Directory ................................................................................................................... 1531.20.5 PS Feature Buttons ........................................................................................................ 1531.21 Administrative Information Features ......................................................................... 1541.21.1 Station Message Detail Recording (SMDR)...................................................................1541.21.2 Printing Message ........................................................................................................... 1591.22 Hospitality Features..................................................................................................... 1601.22.1 Hospitality Features—SUMMARY.................................................................................. 1601.23 Extension Controlling Features .................................................................................. 1611.23.1 Extension Personal Identification Number (PIN) ............................................................ 1611.23.2 Extension Feature Clear ................................................................................................ 1621.23.3 Walking Extension.......................................................................................................... 1631.23.4 Timed Reminder.............................................................................................................1631.23.5 Remote Extension Control by User ................................................................................1641.24 Audible Tone Features................................................................................................. 1651.24.1 Dial Tone ........................................................................................................................1651.24.2 Confirmation Tone .......................................................................................................... 1662 System Configuration and Administration Features ...................... 1672.1 System Configuration—Hardware ..............................................................................1682.1.1 Extension Port Configuration .........................................................................................1682.2 System Configuration—Software ............................................................................... 1692.2.1 Class of Service (COS) .................................................................................................. 1692.2.2 Group ............................................................................................................................. 1702.2.3 Tenant Service ...............................................................................................................1722.2.4 Time Service .................................................................................................................. 1762.2.5 Operator Features .......................................................................................................... 1802.2.6 Manager Features .......................................................................................................... 1802.3 System Data Control ....................................................................................................1832.3.1 PC Programming............................................................................................................ 183