Lucent Technologies Inc.

Alcatel-lucent USA Inc.

Alcatel Lucent

Mary Wonmon Chin

Douglas Harold Rollender

Stuart Owen Goldman

Michael Antwong Garner

An emergency routing number is assigned to each switch in a wireless network. When a switch of the wireless network routes an emergency call to a Public Service Answering Point (PSAP), the switch sends the emergency routing number as the calling party number and provides the PSAP with the identifier of the mobile station. If the emergency call drops, the PSAP performs a call back using the emergency routing number as the called party number. The switch that routed the emergency call from the mobile station to the PSAP receives the call back. The PSAP also sends the identifier of the mobile station to the switch. When a switch receives its emergency routing number as the called party number, the switch recognizes an emergency call back situation and pages the mobile station identified by the mobile station identifier received in association with the emergency routing number. The mobile station is then reconnected with the PSAP.

Emergency call back method

In the method of emergency service call back in a wireless system, an emergency intersystem page is sent from a first system to a second system such that the emergency intersystem page is identifiable as requesting paging of a mobile station for an emergency call back. The second system receives the mobile station identifier (MSID) and mobile equipment identity (MEID) of the paged mobile station from the first system in or with the emergency intersystem page, and uses the MSID to page the mobile station. The second system verifies the page response is from the paged mobile station using the MEID received from the responding mobile station and the MEID received in association with the emergency intersystem page. The emergency call back can then be completed when the mobile station is verified.

Emergency intersystem paging for emergency call back

In the method of recognizing fraudulent emergency calls from a mobile station, a mobile station originating an emergency call is identified based on a mobile equipment identity received from the mobile station. A count of emergency calls received from the identified mobile station is generated and an incoming emergency call from the identified mobile station is determined as fraudulent based on the count.

Method of recognizing fraudulent wireless emergency service calls

A call is indirectly established by triggering a call register to request a mobile switching center, associated with a mobile station, to establish a call between the mobile station and a second party.

Method and system for indirectly establishing a call

A system and method for delivering incoming calls to mobile unit(s) in border cells using packet-based links. An incoming call is received at a serving mobile switching center (SMSC) () for a mobile unit () in a border cell served by a border mobile switching center (BMSC) (). The SMSC allocates () processing resources for the incoming call using a voice coder/frame selector () and designates a data link connection identifier (DLCI) identifying the voice coder resources to be used for the call. The SMSC sends () the DLCI to the BMSC and the BMSC assigns traffic channel resources for the call via an attached base station (). The BMSC provides () the DLCI to the base station, causing the base station to establish a packet link between the voice coder and the traffic channel resources. Thereafter, the BMSC rings () the mobile unit. Upon the mobile unit answering () and the BMSC so informing () the SMSC, the SMSC connects the incoming call to the packet link, thereby completing the call path to the mobile unit.

System and method for delivering incoming calls to mobile units in border cells using packet-based links

Disclosed is a method of communicating emergency call information originating from wireless phones among multiple entities using a set of network signaling operations for pooling and reconciling records of emergency calls and identifications for sources of fraudulent calls. A set of network signaling operations is described herein for communicating records of emergency calls among network entities of same or different levels, and for communicating identified sources of fraudulent calls among network entities of same or different levels.

Method for processing emergency calls initiated by wireless phones

A system and method are provided for selectively distributing a parameter with a selected feature from one mobile switch center to another mobile switch center. A master control file is provided and downloaded to the one mobile switch center with instructions identifying parameters to be excluded from transmission. The instructions are implemented via a filter file program.

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Westmont, IL, United States of America

Mary Wonmon Chin