
Table of Contents iii
Mute ................................................................................................................................................................ 483
Notification Popups ......................................................................................................................................... 487
Password Dial ................................................................................................................................................. 489
ReCall ............................................................................................................................................................. 491
Recent Call In Dialing ...................................................................................................................................... 494
Transfer Mode via Dsskey .............................................................................................................................. 496
Accessing Advanced Features.................................................................................................................. 497
Action URI ....................................................................................................................................................... 499
Action URL ...................................................................................................................................................... 507
Answer By Hand ............................................................................................................................................. 511
Application ....................................................................................................................................................... 512
Busy Lamp Field (BLF) ................................................................................................................................... 514
Busy Tone Delay ............................................................................................................................................. 520
CDP ................................................................................................................................................................. 522
Configuring the IP Phone for Use with a Firewall or NAT ............................................................................... 524
Distinctive Ring Tones .................................................................................................................................... 537
DTMF .............................................................................................................................................................. 543
Methods of Transmitting DTMF Digits on SIP Calls: ....................................................................................... 543
Suppress DTMF Display ................................................................................................................................. 546
Transfer via DTMF .......................................................................................................................................... 548
Play Local DTMF Tone ................................................................................................................................... 549
Early Media ..................................................................................................................................................... 551
Hot Desking ..................................................................................................................................................... 552
Lightweight Directory Access Protocol (LDAP) ............................................................................................... 556
Linker Layer Discovery Protocol (LLDP) ......................................................................................................... 561
Multicast Paging .............................................................................................................................................. 566
Quality of Service (QoS) ................................................................................................................................. 580
Reboot in Talking ............................................................................................................................................ 583
Redial Tone ..................................................................................................................................................... 585
Reserve # in User Name ................................................................................................................................. 586
Return Code When Refuse ............................................................................................................................. 588
Ringing Timeout .............................................................................................................................................. 590
Send User=phone ........................................................................................................................................... 591
Server Redundancy ........................................................................................................................................ 593
Session Timer ................................................................................................................................................. 604
Shared Call Appearance ................................................................................................................................. 606
SIP Send Line ................................................................................................................................................. 624
SIP Send MAC ................................................................................................................................................ 626
SIP Session Timer .......................................................................................................................................... 628
Softkey Layout ................................................................................................................................................ 630
Static DNS Cache ........................................................................................................................................... 634
Tones .............................................................................................................................................................. 635
Unregister When Reboot ................................................................................................................................. 638
Use Outbound Proxy in Dialog ........................................................................................................................ 640
Virtual Private Network (VPN) ......................................................................................................................... 642
VLAN ............................................................................................................................................................... 646
Web Server Type ............................................................................................................................................ 653
180 Ring Workaround ..................................................................................................................................... 656
802.1X Authentication ..................................................................................................................................... 658
100 Reliable Retransmission .......................................................................................................................... 665
Configuring Audio Features ...................................................................................................................... 667
Headset Use ................................................................................................................................................... 667
Audio Codecs .................................................................................................................................................. 673
Acoustic Clarity Technology ............................................................................................................................ 681