
2.5.4.5 Reverse Circuit .......................................................................................................... 88
2.5.4.6 Trunk Busy Out .......................................................................................................... 89
2.5.4.7 Pause Insertion .......................................................................................................... 90
2.5.4.8 Host PBX Access Code (Access Code to the Telephone Company from a Host PBX)
.................................................................................................................................... 90
2.5.4.9 Special Carrier Access Code ..................................................................................... 92
2.5.5 Seizing a Line Features ................................................................................................ 92
2.5.5.1 Seizing a Line Features—SUMMARY ....................................................................... 92
2.5.5.2 Line Preference—Outgoing ....................................................................................... 93
2.5.5.3 Trunk Access ............................................................................................................. 93
2.6 Memory Dialling Features ............................................................................................. 96
2.6.1 Memory Dialling Features—SUMMARY ....................................................................... 96
2.6.2 One-touch Dialling ........................................................................................................ 97
2.6.3 Last Number Redial ...................................................................................................... 98
2.6.4 Speed Dialling—Personal/System .............................................................................. 100
2.6.5 Speed Dialing—External (LDAP) ................................................................................ 102
2.6.6 Quick Dialling .............................................................................................................. 103
2.6.7 Hot Line ...................................................................................................................... 104
2.7 Toll Restriction (TRS)/Call Barring (Barring) Features ............................................ 106
2.7.1 Toll Restriction (TRS)/Call Barring (Barring) ............................................................... 106
2.7.2 Budget Management .................................................................................................. 113
2.7.3 Extension Dial Lock .................................................................................................... 113
2.7.4 Dial Tone Transfer ....................................................................................................... 114
2.7.5 Walking COS .............................................................................................................. 115
2.7.6 Verification Code Entry ............................................................................................... 116
2.8 Automatic Route Selection (ARS) Features .............................................................. 118
2.8.1 Automatic Route Selection (ARS) ............................................................................... 118
2.9 Primary Directory Number (PDN)/Secondary Directory Number (SDN) Features . 124
2.9.1 Primary Directory Number (PDN)/Secondary Directory Number (SDN) Extension .... 124
2.10 Busy Line/Busy Party Features ................................................................................. 130
2.10.1 Automatic Callback Busy (Camp-on) .......................................................................... 130
2.10.2 Executive Busy Override ............................................................................................ 130
2.10.3 Call Monitor ................................................................................................................ 132
2.10.4 Second Call Notification to Busy Extension ................................................................ 133
2.10.4.1 Second Call Notification to Busy Extension—SUMMARY ....................................... 133
2.10.4.2 Call Waiting Tone ..................................................................................................... 134
2.10.4.3 Off-hook Call Announcement (OHCA) ..................................................................... 135
2.10.4.4 Whisper OHCA ........................................................................................................ 136
2.11 Conversation Features ............................................................................................... 138
2.11.1 Hands-free Operation ................................................................................................. 138
2.11.2 Off-hook Monitor ......................................................................................................... 138
2.11.3 Mute ............................................................................................................................ 138
2.11.4 Headset Operation ..................................................................................................... 139
2.11.5 Data Line Security ...................................................................................................... 139
2.11.6 Flash/Recall/Terminate ............................................................................................... 140
2.11.7 External Feature Access (EFA) .................................................................................. 141
2.11.8 Trunk Call Limitation ................................................................................................... 141
2.11.9 Calling Party Control (CPC) Signal Detection ............................................................ 145
2.12 Transferring Features ................................................................................................. 147
2.12.1 Call Transfer ............................................................................................................... 147
2.12.2 SIP Refer Transfer ...................................................................................................... 150
2.13 Holding Features ......................................................................................................... 151
2.13.1 Call Hold ..................................................................................................................... 151
2.13.2 Call Park ..................................................................................................................... 153
2.13.3 Call Splitting ................................................................................................................ 154
Table of Contents
10 Feature Manual