Analog telephone adapter and emergency proxy
First Claim
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1. A system comprising:
- an analog telephone adapter (ATA) which comprises a dial tone generator, control logic, a memory, and a packet generator, the dial tone generator to generate a dial tone when the ATA is in an unregistered state, the control logic to process a dial-out request to a target phone number made by an external device when the ATA is in the unregistered state, the control logic to direct the packet generator to generate an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state, wherein the invite packet encodes location data and cause data, wherein the cause data indicates one of a plurality of emergency situations, wherein the memory stores a list of phone numbers that are permitted to be called when the ATA is in the unregistered state, and wherein the control logic directs the packet generator to generate the invite packet upon determining that the target phone number is included in the list of phone numbers.
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Abstract
An analog telephone adapter (ATA) comprises a dial tone generator, control logic and a packet generator. The dial tone generator generates a dial tone when the ATA is in an unregistered state. The control logic processes a dial-out request when the ATA is in the unregistered state. The control logic directs the packet generator to generate an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state.
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Citations
22 Claims
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1. A system comprising:
an analog telephone adapter (ATA) which comprises a dial tone generator, control logic, a memory, and a packet generator, the dial tone generator to generate a dial tone when the ATA is in an unregistered state, the control logic to process a dial-out request to a target phone number made by an external device when the ATA is in the unregistered state, the control logic to direct the packet generator to generate an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state, wherein the invite packet encodes location data and cause data, wherein the cause data indicates one of a plurality of emergency situations, wherein the memory stores a list of phone numbers that are permitted to be called when the ATA is in the unregistered state, and wherein the control logic directs the packet generator to generate the invite packet upon determining that the target phone number is included in the list of phone numbers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 22)
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11. A method comprising:
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internally generating a dial tone by an analog telephone adapter (ATA) when the ATA is in an unregistered state; processing a dial-out request made by an external device to the ATA when the ATA is in the unregistered state, wherein the dial-out request is to a target phone number; determining that the target phone number is included in a list of phone numbers stored by the ATA; and generating, by the ATA responsive to determining that the target phone number is included in the list, an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state, wherein the invite packet encodes location data and cause data, wherein the cause data indicates one of a plurality of emergency situations. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory computer-readable medium having computer program code to cause an analog telephone adapter (ATA) to:
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internally generate a dial tone when the ATA is in an unregistered state; process a dial-out request made by an external device to the ATA when the ATA is in the unregistered state, wherein the dial-out request is to a target phone number; determine that the target phone number is included in a list of phone numbers stored by the ATA; and generate, by the ATA responsive to determining that the target phone number is included in the list, an invite packet for an emergency proxy to handle the dial-out request on behalf of the ATA when the ATA is in the unregistered state, wherein the invite packet encodes location data and cause data, wherein the cause data indicates one of a plurality of emergency situations.
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Specification