2.5.4.6 Trunk Busy Out ............................................................................................................96
2.5.4.7 Pause Insertion ............................................................................................................97
2.5.4.8 Host PBX Access Code (Access Code to the Telephone Company from a Host
PBX) ............................................................................................................................98
2.5.4.9 Special Carrier Access Code .....................................................................................100
2.5.5 Seizing a Line Features ................................................................................................101
2.5.5.1 Seizing a Line Features—SUMMARY .......................................................................101
2.5.5.2 Line Preference—Outgoing .......................................................................................102
2.5.5.3 Trunk Access .............................................................................................................103
2.6 Memory Dialling Features ............................................................................................105
2.6.1 Memory Dialling Features—SUMMARY ......................................................................105
2.6.2 One-touch Dialling ........................................................................................................107
2.6.3 Last Number Redial ......................................................................................................108
2.6.4 Speed Dialling—Personal/System ...............................................................................110
2.6.5 Quick Dialling ...............................................................................................................112
2.6.6 Hot Line ........................................................................................................................113
2.7 Toll Restriction (TRS)/Call Barring (Barring) Features ..............................................114
2.7.1 Toll Restriction (TRS)/Call Barring (Barring) ................................................................114
2.7.2 Budget Management ....................................................................................................121
2.7.3 Extension Dial Lock ......................................................................................................122
2.7.4 Dial Tone Transfer ........................................................................................................123
2.7.5 Walking COS ................................................................................................................124
2.7.6 Verification Code Entry .................................................................................................126
2.8 Automatic Route Selection (ARS) Features ...............................................................128
2.8.1 Automatic Route Selection (ARS) ................................................................................128
2.9 Primary Directory Number (PDN)/Secondary Directory Number (SDN)
Features .........................................................................................................................134
2.9.1 Primary Directory Number (PDN)/Secondary Directory Number (SDN)
Extension ......................................................................................................................134
2.10 Busy Line/Busy Party Features ...................................................................................140
2.10.1 Automatic Callback Busy (Camp-on) ...........................................................................140
2.10.2 Executive Busy Override ..............................................................................................141
2.10.3 Call Monitor ..................................................................................................................142
2.10.4 Second Call Notification to Busy Extension .................................................................144
2.10.4.1 Second Call Notification to Busy Extension—SUMMARY .........................................144
2.10.4.2 Call Waiting Tone ......................................................................................................146
2.10.4.3 Off-hook Call Announcement (OHCA) .......................................................................147
2.10.4.4 Whisper OHCA ..........................................................................................................148
2.11 Conversation Features .................................................................................................149
2.11.1 Hands-free Operation ...................................................................................................149
2.11.2 Off-hook Monitor ...........................................................................................................150
2.11.3 Mute .............................................................................................................................151
2.11.4 Headset Operation .......................................................................................................152
2.11.5 Data Line Security ........................................................................................................153
2.11.6 Flash/Recall/Terminate ................................................................................................154
2.11.7 External Feature Access (EFA) ....................................................................................155
2.11.8 Trunk Call Limitation .....................................................................................................156
2.11.9 Calling Party Control (CPC) Signal Detection ..............................................................158
2.12 Transferring Features ...................................................................................................159
2.12.1 Call Transfer .................................................................................................................159
2.13 Holding Features ...........................................................................................................163
2.13.1 Call Hold .......................................................................................................................163
2.13.2 Call Park .......................................................................................................................165
2.13.3 Call Splitting .................................................................................................................167
2.13.4 Music on Hold ...............................................................................................................168
Feature Guide 9
Table of Contents