Machine answer detection
Management of telephone call routing using a directory...
Memory architecture for telephone dialer
Memory device
Memory dial telephone finder
Memory dialing control system having improved telephone number r
Merging various request methods into a single unified user...
Message and ringing signaling device for a telephone installatio
Message generator with auto dialer
Method and apparatus enabling a calling telephone handset to...
Method and apparatus for a dual mode keypad permitting one-touch
Method and apparatus for abbreviated dialing in a subscriber...
Method and apparatus for alphanumeric data entry
Method and apparatus for an improved ring trip detection telepho
Method and apparatus for an intelligent telephone prefix dialer
Method and apparatus for analyzing dual tone multi-frequency...
Method and apparatus for automatic generation of telephone call
Method and apparatus for automatic redialing of telephone number
Method and apparatus for automatic telephone area-code dialing
Method and apparatus for automatically initiating a...