This Universal PRO Call block device can block unwanted numbers on landlines from all major local exchange carriers and VoIP providers.  It features easy-to-use one-button operation to BLACKLIST up to 1,500 telephone numbers (up to 16 digits each) from nuisance callers as well as junk faxes.  It also stores 100 incoming calls, and 50 outgoing calls.

Universal PRO Call Blocker Features:

▶ Compatible all major local exchange carriers and imcumbent companies including (but not limited to) the following:  AT&T, CenturyLink, Comcast, FairPoint, Frontier Communications, Hawaiian Telcom, Verizon, Windstream.

▶ Compatible with all major VoIP providers including:  MagicJack, Comcast, AT&T U-verse, Verizon FIOS, Ooma, Vonage, and many others (see list).

▶ Large storage - Stores up to 1,500 telephone and fax numbers in blacklist memory

▶ Easy to Use - Simply press a button to store telephone and fax numbers in "Blacklist"

▶ Works worldwide with any analog phone line, and most VOIP lines (tested on Vonage, Comcast, MagicJack)

▶ Line Powered - It does not require any external power supply or batteries (please discard battery compartment)

▶ Built-in EEPROM technology prevents losing stored numbers when disconnected from the telephone line

▶ Stores up to 100 incoming phone numbers (recent calls) and 50 sets outgoing phone numbers

▶ Blocks telephone numbers with up to 16 digits

▶ LCD display has 4 levels of brightness (easy of read)

▶ Desk/Wall mountable

▶ FSK/DTMF dual system compatible (requires Caller ID service to work properly)