Timed Reminder Setting 311Toll Restriction (TRS) 114Toll Restriction (TRS)/Call Barring (Barring) 114Toll Saver 312Tone, Audible 249Tone, Call Waiting 146Tone, Confirmation 251Tone, Dial 249Tones/Ring Tones 508Transfer Recall 160Transfer Recall to a Mailbox 294Transfer to Mailbox 294Transfer, Call 159Transfer, One-touch 161Transferring Features 159TRAP Implementation 499TRS/Barring ® Toll Restriction/Call Barring Features 114TRS/Barring Level 114TRS/Barring Override by System Speed Dialling 114Trunk Access 103Trunk Adaptor 470Trunk Answer From Any Station (TAFAS) 191Trunk Busy Out 96Trunk Call Features 91Trunk Call Limitation 156Trunk Group 422Trunk Group Access 103Trunk Service (Universal Port) 294Trunk-to-Trunk Call Duration 156Two-way Record/Two-way Transfer 313UUCD ® Uniform Call Distribution 54UM Group ® Unified Messaging Group 264UM Group Failover 355UM Port 264Unattended Conference 171Unified Messaging (UM) Group 264, 423Unified Messaging System 264Uniform Call Distribution (UCD) 54Uninterruptible Power Supply 494Upgrading Software 493UPS (Uninterruptible Power Supply) Integration 494UPS ® Uninterruptible Power Supply 494Urgent Message 314User Profile—Automatic Configuration 267User Profiles 473User-to-user Signalling Type 1 (UUS-1) 323VVerification Code Entry 126Verification Code Personal Identification Number(PIN) 126VIP Call 62Virtual Locations 246Virtual Private Network, ISDN (ISDN-VPN) 390Virtual PS 464Voice Mail (VM) Transfer Button 314Voice Mail Service 295Voice Mail, Centralised 409Voice over Internet Protocol (VoIP) Network 382VoIP ® Voice over Internet Protocol Network 382VPN ® Virtual Private Network 390WWalking COS 124Walking COS Through DISA 179Walking COS, DISA Automatic 179Walking Extension 245Walking Extension Features 245Walking Extension, Enhanced 246Web Programming 315Whisper OHCA 148Wireless XDP Parallel Mode 461Wrap-up 65XXDP Parallel Mode, Wireless 461Feature Guide 527Index
