227807 ⎘
Arrangements for interconnection not involving centralised switching involving a separate line for each pair of parties
Interface device for intercom access control systems
#2Speaker phone noise suppression method and apparatus
#3System and Method for Controlling Notification Characteristics of a Mobile Communication Device
#4Mobile communication terminal apparatus
#5System and apparatus for silencing communication devices
#6In-vehicle handsfree apparatus
#7System and apparatus for silencing communication devices
#8System and method for controlling notification characteristics of a mobile communication device
#9Mobile communication device with adaptive audible user notification
#10Incoming call management in a push-to-talk communication system