- Whole house/small business paging from existing phones- Built-in two-watt mono paging amplifier with gain control- Phone to phone intercom- Page from several different phone lines by connecting multiple units- Music on hold- Caller on hold- Can provide background music from an external source- Background music mate (automatic during paging or touch tone selectable while you are on a call)- Selectable loud ringing (electronic warble over speakers)- Doorbell switch input (lighted or non-lighted) for activat