Abstract: A method of activating a mobile station used in a cellular network system provides subsidy protection for a cellular operator. The method comprises the steps of installing a subscriber identity module (SIM) in the mobile station, the SIM having an IMSI file and storing the first indicia uniquely identifying the cellular operator, the mobile station storing second indicia uniquely identifying the cellular operator; comparing the first indicia to the second indicia to determine if the SIM and the mobile station are valid for the cellular operator; and if the SIM and the mobile station are valid, then storing a mobile identity number in the IMSI file of the SIM.

Abstract: A direct sequence CDMA receiver receives a sampled signal. A subsampling unit sub-samples the sampled signal in accordance with timing information to produce a chip-sampled signal. An equivalent code generator generates equivalent codes using the timing information and information about user spreading codes. A processor processes the equivalent codes to produce an orthogonalized code and a correlator correlates the chip sampled signal with the orthogonalized code to produce a despread value.

Abstract: An Internet server allows a cellular telephone to acquire a short messaging service (SMS) address for an Internet station. A user of the cellular telephone generates a preliminary message including an Internet e-mail address for the Internet station. The preliminary message is sent to the Internet server using the SMS. The Internet server generates a reply message having the Internet station e-mail address in a sender address field. The reply message, when sent to the cellular telephone, prompts the Internet gateway to supply the SMS address for the Internet station to the cellular telephone. Further, the Internet server processes an initial message from the cellular telephone to at least one Internet station. The initial message includes a communication for an Internet station, a first line of the communication including the Internet e-mail address for the Internet station.