8 FEATURE C ODESThis chapter describes how to use feature codes with the 3Com®Telephones. It covers these topics:■ NBX Tones■ Feature Codes with 3Com Telephones■ Using Feature CodesFor help on accessing NBX® features from an analog telephone, see theNBX Feature Codes Guide in the NBX NetSet™ utility.NBX Tones As you use your 3Com Telephone to receive voice mail and use thefeature codes on the NBX system, you hear these tones:■ Dial Tone — When you lift the receiver to place a call or begin usingone of the features, you hear the normal Dial Tone (except for thecircumstance described in the next bulleted item).■ New Messages Dial Tone — When your voice mailbox has eithernew or unsaved messages and you pick up your handset, you hear theNew Messages Dial Tone (a repeated short tone, also called the“stutter” tone) until you delete or save every message. Youradministrator can turn the New Messages Dial Tone on or off.■ Feature Entry Tone — When you lift the handset and press theFeature button to begin using one of the features, you hear theFeature Entry Tone, which is a steady sound at a lower pitch than thenormal dial tone. You must enter data, for instance a feature codenumber, your password, or an extension, as specified in Table 9.■ Confirmation Tone — After certain steps, as when you add a partyto a conference call, you hear a short Confirmation Tone or “beep,”which confirms that you have completed the action.■ Error Tone — You hear the “fast busy” tone, also called the“congestion” tone, when no circuits are available. In addition, you