Call system
Call timers specific to each type of cellular telephone call
Call transfer activation indicator in a radio...
Call transfer and simplex call capability in a residential syste
Call transfer for an integrated packet and wireless service...
Call transfer for an integrated wireline and wireless...
Call transfer to proximate devices
Call transfer to proximate devices
Call triggering to one or more service nodes upon receipt of...
Call waiting in a wireless centrex system
Call-back method in response to emergency call originating from
Call-back method in response to emergency call originating from
Call-based provisioning of mobile equipment location...
Call-handling for an off-premises, telecommunications...
Call-setup method in a digital cellular radio communication syst
Called mobile subscriber present status
Called party availability announcement in a radio telecommunicat
Caller ID preview for mobile telephones
Caller identification delivery in a wireless local loop or...
Caller identification device and method of operation thereof