General Feature Codes Commonly Used
Feature codes listed always require the  ∞ (infinity key) first, then the code:

 Background Music (when available) On/Off  7313

Call Forward All Calls  7355

Call Forward if Busy  7357

Call Forward if No Answer  7356

Call Forward if No Answer/Busy  7358

Call Logs (only for LCD-display phones)  7333

Call Pick-up (another extension)  4

Conference Calls  5

Do-Not-Disturb  7370

Do-Not-Disturb Cancel  7371

Do-Not-Disturb On/Off  7372

Dynamic Extension Express (DEE)  7364

Handoff  7388

Set Feature Keys to Default 
7395

Group Listen  7312

Hold  7336

Hookflash  7330

Messages (Review waiting)  7365

Cancel Message That You Left  7366

Cancel Message On Your Phone  7368

Mute On/Off  7314

Program Feature Keys  7397

Record-A-Call  7385

Redial  7380

Redirect  7331

Reminder Message  7305

Cancel Reminder Message  7306

Reverse Transfer (also known as Call Pick-up)  4

Review Feature Key Programming  7396

Ring Tone Selection  7398

Transfer to Hold  7346

Transfer to Ring  7345