Telephone system and method for reliable emergency services calling
AssigneeWorldCom, Inc.
InventorsSteven L. Lass, John Kenneth Gallant, John L. Truetken
Life of this patent
Estimating the term…
Abstract
A method of routing a telephone call includes receiving an indication, at a handset device 112, to initiate a telephone call. It is then determined, preferably by the handset device 112, whether the telephone call is an emergency services telephone call. If the telephone call is not an emergency services telephone call, it is routed to a proxy server 134. On the other hand, if the telephone call is an emergency services telephone call, it is routed to a local gateway 116 without first accessing the proxy server 134.
Claims26
A method of routing a telephone call at a local customer premise, the method comprising:
- receiving, at a handset device, an indication to initiate a telephone call;
- determining if the telephone call is a first type of telephone call;
- if the telephone call is not a first type of telephone call, routing the telephone call to a proxy server;
- and
- if the telephone call is a first type of telephone call, routing the telephone call to a local gateway without first accessing the proxy server.
A telephone system comprising:
- a router coupled to a local area network, the router including an output port that is operable to be coupled to a proxy server;
- at least one handset coupled to the local area network, the handset including a user interface;
- and
- a local network gateway coupled to the local area network, the local network gate including an output port operable to be coupled to an element of a circuit-switched telephone network, wherein the handset routes a telephone call directly to the local network gateway when an indication from the user interface indicates that the telephone call is a telephone call of a first type.
A telephone handset apparatus comprising:
- a user interface;
- a controller coupled to the user interface;
- and
- a memory storing a table including an indication of an emergency services telephone call and a destination address corresponding with the emergency services telephone call;
- wherein the controller receives a user indication from the user interface and determines if the user indication is the same as the indication of a emergency services telephone call and wherein, if the user indication is the same as the indication of a emergency services telephone call indication, the controller routes a telephone message to the destination address in the table.
Dependencies are inferred from the claim text.