Patent ID: 6032053
Filing Date: 2000-02-29
Classification: G06F,H04M

Abstract:
In a cellular telephone capable of receiving calls from an analog cellular system and from a digital cellular system, a method for distinctively signaling a call type, comprising:receiving an incoming call to the cellular telephone by monitoring incoming signals of said incoming call to detect an indication of a call type by detecting one of an incoming control channel or incoming data packet header, determining whether the incoming call is an analog call or a digital call, in the case of an analog call, monitoring incoming signals of said incoming call to detect an incoming control channel prior to accepting the call, and in the case of a digital call, monitoring incoming signals of said incoming call to detect an incoming data packet header prior to accepting the call;if the call is from the analog cellular system, then activating a first indicator to signal to a user receipt of an analog call;if the call is from the digital cellular system, then determining if the call is a voice or a data call;if the call from the digital cellular system is determined to be a voice call, then activating a second indicator to signal to a user receipt of a digital voice call; andif the call from the digital cellular system is determined to be a data call, then activating a third indicator to signal to a user receipt of a digital data call.