1
William P McMullin: Method and apparatus permitting notification and control of blocked incoming calls over a data network. Interactive Telecom, Bennett Jones Vercheve, September 15, 1998: US05809128 (408 worldwide citation)

Methods and apparatus are disclosed for providing automatic redirection of an incoming voice telephone call from a caller to a subscriber proxy when an attempt by the caller to connect to a telephone link of a public switched telephone network (PSTN) is blocked due to the telephone link being occupi ...


2
BLOCKING UNWANTED COMMUNICATIONS FOR A SUBSCRIBER POOL. October 19, 2017: US20170302793-A1

A method and system of blocking unwanted communications (UC) intended to be sent to a first and second communication device (CD) in a pool of CDs. There is in an illustrative embodiment a remote server with computer hardware designed to process communication information to and from the first and sec ...