There are many features that can be used by dialling a FEATURE CODE.
Below is a list of which feature codes are available:-
Feature Name - Feature Code
Internal Page - 043
Internal Page - 500
Forward Register (Normal) - 501
Forward Cancel - 502
Timed DND Register / Cancel (Toggle) - 503
DND Register / Cancel (Toggle) - 504
Account Code - 505
Station Speed Dial (Register) - 506
Station Speed Dial - 507
Extension Call Back / Trunk Queuing - 508
Extension Call Back / Trunk Queuing Cancel - 509
Call Pick-up (Group) - 510
Call Pick-up (Direct) - 511
Call Park (Register / Answer) - 512
Hot Desk Login / Logout - 513
Conference Room Activate - 514
Conference Room Deactivate - 515
Wake-up Register - 516
Wake-up Cancel - 517
Intrusion Request - 518
Camp On Register - 519
OHVO (Off Hook Voice Over) - 520
ACD Agent Log On / Off - 521
ACD Agent Not Ready Mode - 522
ACD Agent Work Mode - 523
ACD Agent Auto Work Mode After Call (On / Off) - 524
ACD Agent Auto Answer (On / Off) - 525
ACD Agent Head/Hand Set - 526
ACD Agent Headset Ring Mode Change - 527
ACD Supervisor Display Q Wait Count - 528
ACD Supervisor Group Night Mode - 529
ACD Supervisor Group Holiday Mode - 530
ACD Supervisor Silent Monitor - 531
ACD Supervisor ACD Q Overflow Count Change - 532
Two Way Record - 533
Virtual Desk Login / Logout - 534
ACD Agent Help Request - 535
Caller ID Display Restrict (Call Base) - 536
Call Log List Display - 537
System Service Time Mode Change - 538
Terminal-Based DND Register / Cancel (Toggle) - 539
Group Speed Dial - 540
The features are described in more detail in other documents on this Knowledgebase.