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Telephone communications systems, comprised of telephones, main processor card, caller ID trunks, digital ports, analog ports as a base package, with as additional potential add-on components, ISDN BRI trunk cards, 4 port digital station interface card, 12-key telephone expansion module, door phone, digital telephone wall mount kit, digital wireless key telephone, station hard of hearing amplified handset, station noise canceling handset, loud ringing bell interface, miscellaneous card for paging, background music and relays, computer telephony interface adapter, back up battery, serial-to-ethernet gateway, system/voice mail modem, 4 port voice processing system