Abstract: A wireless communication system constructed according to the present invention includes an originating mobile switching center (MSC), a home location register (HLR), a serving MSC and supporting infrastructure for each MSC. Such supporting infrastructure includes a plurality of base station controllers (BSC) and a plurality of base stations. The base stations support wireless communications within respective cells to service mobile units operating in the cells. When a call is received by the originating MSC intended for the mobile unit, the originating MSC determines whether the call originated from a private branch exchange. Such determination is made based upon whether the call was incoming on a designated trunk line or from a caller ID assigned to the private branch exchange. If the call originated from the private branch exchange, the call is competed and a distinctive ringing is provided to the mobile unit to indicate that the call originated at the private branch exchange.

Abstract: A wireless communication system determines whether an increased billing rate will be applied for an incoming call by comparing an Originating Rate Center ID for the call with a current location of a mobile unit. Based upon this determination, the wireless communication center provides a distinctive ringing alert to a serviced mobile unit when an increased billing rate will be applied. An increased billing rate may be applied when the mobile unit terminates a call outside of its Home Zone and/or outside of the Orginating rate Center of the call. The user of the mobile unit may then elect to receive the call based upon the knowledge that the call is a increased billing rate call or a regular billing rate call.

Abstract: A wireless communication system constructed according to the present invention interfaces with a Service Control Point (SCP) to provide location information for a serviced mobile unit. The SCP sends a locate request to a Home Location Register (HLR) of the wireless communication system, requesting the location of the serviced mobile unit. The HLR then accesses a serving Mobile Switching Center (MSC), the serving MSC being identified by the HLR as currently servicing the mobile unit. Depending upon the particular constraints of the requested operation by the SCP (e.g., immediate locate request or most recent locate request), the serving MSC either retrieves location information for the mobile unit from its Visitor Location Register (VLR) or sends a page to the mobile unit. The mobile unit responds to the page and, based upon the cell/sector from which the mobile unit responded, the serving MSC determines an approximate location of the mobile unit.

Abstract: Upon determining that call redirection to a voice mailbox is required (based on receipt of redirection request message from the MSC-S serving the called mobile), the MSC-O transmits a transfer-to-number request (TRANUMREQ) signal to the called mobile's home location register (HLR). The HLR then transmits a routing request (ROUTREQ) signal to an adjunct mobile switching center (MSC-A) which supports direct trunk mobile's voice mailbox. The ROUTREQ message not only serves as an indication to the MSA-A that a TLDN is being requested, but it also provides the MSC-A with the mailbox number to which a call terminating to the TLDN is to be connected. The MSC-A allocates a TLDN for the call that will be redirected to voice mail and associates the mailbox number with this TLDN. The assigned TLDN is returned via signaling messages to the HLR via the routing request return result (routreq) which in turn relays the TLDN to the MSC-o via the transfer-to-number request return result (tranumreq).

Abstract: A wireless communication system constructed according to the present invention forwards the termination access type to the serving mobile switching center (MSC) for inclusion into a call detail record and includes an originating MSC, a home location register (HLR), a serving MSC and supporting infrastructure for each MSC. Such supporting infrastructure includes a plurality of base station controllers (BSC) and a plurality of base stations. The base stations support wireless communications within respective cells to service mobile units operating in the cells. When a call is received by the originating MSC intended for the mobile unit, the originating MSC determines the termination access type of the call, e.g., mobile to mobile directory number access, land to mobile directory number access, remote feature control port access and roamer port access, among others. The originating MSC then sends a locate request to the mobile unit's HLR.

Abstract: Wireless calls to a private branch exchange (PBX) which does not support direct inward dialing—either due to limitations of the PBX itself or due to limitations of the PSTN to which the PBX is connected—are routed by means of an adjunct mobile switching center (MSC-A). An originating mobile switching center (MSC-O) serving the mobile unit which places the call by dialing the (typically) three- or four-digit PBX extension sends the dialed extension digits to the home location register (HLR) or service control point (SCP) via an ANSI-41 origination request (ORREQ) signaling message. The HLR or SCP transmits an ANSI-41 routing request (ROUTREQ) signaling message to the MSC-A requesting a temporary local directory number which will be used for connecting the call.

Abstract: A method and system are disclosed for dynamically updating billing information for a mobile subscriber unit when a long distance call is delivered to the mobile subscriber unit. First, a request to terminate a call at a mobile subscriber unit is detected. Next, in response to detecting the request to terminate a call at the mobile subscriber unit, a rate center that is currently serving the mobile subscriber unit is automatically identified. Finally, the identification of the serving rate center is automatically delivered to a billing database, such that the billing database is dynamically updated and is utilized to promptly report accurate billing information to a subscriber.

Abstract: A method and system are disclosed for automatically disabling termination restrictions of a mobile subscriber unit in response to a disconnection of an emergency call originated by said mobile subscriber unit. According to the present invention, a determination is first made that an emergency call has been originated from a mobile subscriber unit to a public safety answering point. Next, in response to a disconnection of the emergency call, a subscriber database that contains the termination restriction is automatically notified that the emergency call has been disconnected. Finally, in response to automatically notifying the subscriber database that the emergency call has been disconnected, the termination restriction is automatically disabled for a limited period of time, such that the public safety answering point may call the mobile subscriber unit back.