An item specifically designed to notify the user that there is an awaiting phonecall via an audible tone, bell, beep or the like. It may or may not include a display or readout to indicate the incoming number, or an autodial feature.
NSN 5895-01-089-5261
NSN 6135-01-096-1452
NSN 6150-01-605-9721
NSN 6645-01-523-0812
NSN 5950-00-679-9539
NSN 5935-01-044-5624
NSN 6320-00-701-0437
NSN 6220-00-557-4114
NSN 5905-00-877-8955
NSN 6650-00-126-8990
NSN 5905-00-372-5214
NSN 5965-00-910-3233