Methods of placing emergency calls using data networks

1. A method of placing an emergency telephone call using customer premises equipment at a customer premises, the method comprising:

providing a data connection between the customer premises equipment at the customer premises and a data network;

detecting a request for an emergency call being placed from the customer premises equipment;

responsive to detecting the request for an emergency call, retrieving an address for a public safety answering point corresponding to the customer premises wherein the address for the public safety answering point is retrieved from memory at the customer premises; and

after retrieving the address for the public safety answering point, establishing a voice communication between the customer premises equipment and the public safety answering point corresponding to the customer premises wherein establishing the voice communication between the customer premises equipment and the public safety answering point comprises,

attempting to establish the voice communication between the customer premises equipment and the public safety answering point over the data connection between the customer premises equipment and the data network,

after attempting to establish the voice communication over the data network when voice communication can be established over the data network, establishing the voice communication between the customer premises equipment and the public safety answering point over the data connection between the customer premises equipment and the data network, and

after attempting to establish the voice communication over the data connection when the voice communication cannot be established over the data network, establishing the voice communication between the customer premises equipment and the public safety answering point over a public switched telephone network line at the customer premises.

2. A method according to claim 1 further comprising:

before detecting the request for the emergency call, providing a location of the customer premises from the customer premises equipment to a public safety answering point directory database;

receiving the address for the public safety answering point corresponding to the customer premises at the customer premises equipment from the public safety answering point directory database over the data network; and

storing the address for the public safety answering point corresponding to the customer premises in the memory at the customer premises.

3. A method according to claim 2 further comprising:

before providing the location of the customer premises, accepting user entry of the location of the customer premises at the customer premises equipment.

4. A method according to claim 1 further comprising:

detecting a request for a non-emergency call being placed from the customer premises equipment; and

responsive to detecting the request for the non-emergency call, establishing a voice communication from the customer premises equipment over the data network.

5. A method according to claim 1 wherein detecting the request for an emergency call comprises detecting an emergency code at the customer premises, wherein the emergency code and the address for the public safety answering point are different, and wherein the address for the public safety answering point is retrieved from memory at the customer premises.

6. A method according to claim 5 wherein establishing the voice communication comprises establishing the voice communication using the address retrieved from the memory at the customer premises.

7. A method according to claim 6 wherein establishing the voice communication comprises establishing the voice communication over the data connection between the customer premises equipment and the data network.

8. A method according to claim 6 wherein the voice communication between the customer premises equipment and the public safety answering point is established using a Voice over Internet Protocol (VoIP).

9. A method of placing an emergency telephone call using customer premises equipment at a customer premises, the method comprising:

providing a data connection between the customer premises equipment at the customer premises and a data network;

transmitting a request for a location of the customer premises over the data network to a network location database;

after transmitting the request, receiving the location of the customer premises at the customer premises equipment from the network location database over the data network;

after receiving the location of the customer premises at the customer premises, providing a location of the customer premises to a public safety answering point directory database;

after providing the location of the customer premises to the public safety answering point directory data base, receiving the address for the public safety answering point corresponding to the customer premises at the customer premises equipment from the public safety answering point directory database over the data network;

after receiving the address for the public safety answering point, storing the address for the public safety answering point corresponding to the customer premises in the memory at the customer premises; and

after storing the address for the public safety answering point, detecting a request for an emergency call being placed from the customer premises equipment;

responsive to detecting the request for an emergency call, retrieving an address for a public safety answering point corresponding to the customer premises wherein the address for the public safety answering point is retrieved from memory at the customer premises; and

after retrieving the address for the public safety answering point, establishing a voice communication between the customer premises equipment and the public safety answering point corresponding to the customer premises.

10. A method for identifying a public safety answering point corresponding to a customer premises, the method comprising:

providing a data connection between customer premises equipment at the customer premises and a data network;

providing a location of the customer premises from the customer premises equipment to a public safety answering point directory database;

receiving an address for a public safety answering point corresponding to the customer premises at the customer premises equipment from the public safety answering point database over the data network; and

storing the address for the public safety answering point corresponding to the customer premises in memory at the customer premises.

11. A method according to claim 10 further comprising:

before providing the location of the customer premises, accepting user entry of the location of the customer premises at the customer premises equipment wherein providing the location comprises transmitting the location over the data network.

12. A method according to claim 11 wherein providing the location of the customer premises is initiated responsive to accepting user entry of the location of the customer premises.

13. A method according to claim 10 further comprising:

before providing the location of the customer premises, transmitting a request for a location of the customer premises over the data network to a network location database; and

receiving the location of the customer premises at the customer premises equipment from the network location database over the data network.

14. A method according to claim 13 further comprising:

detecting a disruption of the data connection followed by providing the data connection, wherein the request for the location of the customer premises is transmitted responsive to the disruption of the data connection followed by providing the data connection.

15. A method according to claim 10 further comprising:

detecting a request for an emergency call being placed from the customer premises equipment;

responsive to detecting the request for an emergency call, retrieving the address for the public safety answering point corresponding to the customer premises from the memory at the customer premises; and

after retrieving the address for the public safety answering point, establishing a voice communication between the customer premises equipment and the public safety answering point corresponding to the customer premises using the address retrieved from the memory at the customer premises.

16. A method according to claim 15 wherein detecting the request for an emergency call comprises detecting an emergency code at the customer premises, wherein the emergency code and the address for the public safety answering point are different, and wherein the address for the public safety answering point is retrieved from the memory at the customer premises.

17. A method according to claim 16 wherein establishing the voice communication comprises establishing the voice communication over the data connection between the customer premises equipment and the data network.

18. A method according to claim 15 further comprising:

storing the location of the customer premises at the public safety answering point directory database; and

providing the location of the customer premises from the public safety answering point directory database to the public safety answering point.

19. A method according to claim 10 wherein providing the location comprises providing a street address of the customer premises from the customer premises equipment to the public safety answering point director database.

20. A method according to claim 10 wherein providing the location of the customer premises comprises determining the location of the customer premises equipment using a satellite global position system and providing the determined location of the customer premises equipment.