Digitone Call Blocker
This commercial grade Digitone Call Blocker 10 was designed by Digitone, now in its 23rd year, for those who want an automatic way using Caller ID service to block unwanted calls yet allow all others to ring their phones. It comes from the factory preset to allow all callers with a valid phone number to ring through and then screens your calls based on a Blocked Caller List you prepare.  The Digitone Call Blocker 10 has a 80 number memory for blocking unwanted calls including individuals or area codes and a 30 number VIP Caller List for preferred callers in After Hours mode.  Blocked callers by default are Out of Area, Unavailable, Private, Anonymous, Name Not Provided, Unknown, No Name at all, and no number at all.  Fully programmable using your telephone in the DCB10 TEL port.  The blocked caller hears only the first ring tone and then silence.  Standard Mode from the factory hangsup on all calls without a number.  Business Mode allows all calls except those numbers you block.  Even spoofed numbers with characters or less than 7 digits are hungup on.  More information can be seen at www.digitone.com.