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US 2009/0154659 A1Published application
Reverse 911 using multicast session internet protocol (SIP) conferencing of voice over internet protocol (VoIP) users
AssigneeTeleCommunication Systems, Inc.
InventorDrew Morin
Life of this patent
Estimating the term…
Abstract
A reverse 911 system uses voice over Internet Protocol (VoIP)/Session Internet Protocol (SIP) conferencing. An emergency alert message may be a text, video, MMS, hyperlink and/or image communicated simultaneously to multiple VoIP users via a SIP conference. Multiple SIP conferences may be cascaded to communicate with a larger number of users in a relevant group of users to be communicated with.
Claims24
A reverse 911 emergency alert system, comprising:
- a conference server triggered by an appropriate event;
- a Session Internet Protocol (SIP) conferencer, initiated by said conference server, to establish an initial SIP conference between a source of an emergency message and a plurality of user agents;
- and
- a source of an emergency message transmitted into said SIP conference.
1 more element
A method of providing a reverse 911 service, comprising:
- receiving a trigger for issuing an emergency alert;
- establishing a first Session Internet Protocol (SIP) conference call between a source of an emergency message and a plurality of user agents selected to receive said emergency message;
- and
- issuing said emergency message to said plurality of user agents.
1 more element
Apparatus for providing a reverse 911 service, comprising:
- means for receiving a trigger for issuing an emergency alert;
- means for establishing a first Session Internet Protocol (SIP) conference call between a source of an emergency message and a plurality of user agents selected to receive said emergency message;
- and
- means for issuing said emergency message to said plurality of user agents.
1 more element
Dependencies are inferred from the claim text.