Use this feature to activate call waiting. When you are on a call and a second intercom, transferred or outside call comes in, you hear a beep to indicate you have a second call waiting to be answered. Press the switch hook (or Recall or Flash button, if available) to put the current call on hold and retrieve the second call. To return to the first call, press the switch hook again.
•This feature is distinct from the local telephone company’s Call Waiting feature. If you use this system feature, do not use your local telephone company’s Call Waiting feature.
•The Call Waiting tone is not repeated.
•Call waiting is only supported for single-line telephone extensions. Do not assign Call Waiting to extensions that have fax machines, credit card scanners, modems or auto attendants because the call-waiting tone interrupts the data connection.
•You cannot transfer either party connected by call waiting, conference in additional parties or use feature codes while both calls are active.
•Transfer-return, group call distribution and hunt group calls are not considered incoming calls for this feature.
1408/1416/9504/9508 Phone
1.At either of the first two extensions on the system, press Admin.
•To do the above during a call, you may need to press the 
PHONE button to display the Admin soft key option. If you access phone administration during a call, only the 
SPEAKER, 
MUTE and 
HEADSET buttons still affect the connected call.
2.Use the 
up or down 
arrow buttons to scroll the display to System Administration. When highlighted, press Select.
3.Use the up or down arrow buttons to scroll the display to Extensions. When highlighted, press Select.
4.Use the up or down arrow buttons to scroll the display to Call Waiting. When highlighted, press Select.
5.At the Extension: prompt enter the extension you want to edit.
6.The current setting is displayed.
7.Enter 1 or 2. The default is 2 (not active), ie. no call waiting.
•1 = Active/Assigned.
•2 = Not Active/Not Assigned (the default setting).
•Alternatively use the 
left or right 
arrow icons to toggle through the settings or Default to return to the default setting.
8.Use the up or down arrow buttons to select another extension to adjust if required.
•Exit programming by pressing PHONE. Alternatively use the Back button to move to another menu.
M7324/M7324N/M7310/M7310N/T7316/T7316E Phone
1.At either of the first two extensions on the system, press 
Feature **config (ie. Feature **266344).
•If the system has a system password set, it is requested. Enter the password.
2.The phone displays System Admin.
3.Dial #316. The phone displays Call Waiting.
4.Enter the number of the extension to be programmed.
5.Enter the required value. The default is 2 (not active), ie. no call waiting.
•1 = Active/Assigned.
•2 = Not Active/Not Assigned (the default setting).
•Alternatively use the Next Data or Previous Data buttons to change the setting or press Remove to return to the default setting.
6.Press the Next Item or Previous Item button for the next or previous extension respectively.
•To exit phone based administration at any time, press the Release button. To select a different process use the Next Procedure or Previous Procedure buttons or dial another feature code.
ETR 18D/ETR 34D Phone
1.At either or the first two extensions on the system, press Feature 0 0 followed by two presses of the first intercom or call appearance button.
2.System Administration: is shown on the display.
3.Dial #316. The phone displays Call Waiting.
4.Enter the number of the extension to be programmed.
5.Enter the required value. The default is 2 (not active), ie. no call waiting.
•1 = Active/Assigned.
•2 = Not Active/Not Assigned (the default setting).
•Alternatively use the Next Data or Previous Data buttons to change the setting or press Remove to return to the default setting.
6.Press the Next Item or Previous Item button for the next or previous extension respectively.
•Exit programming by pressing Feature 00. You can also exit programming mode by lifting the handset, then placing it back in the cradle.