Next-generation network that reduces the effect of a service failure
First Claim
1. A network comprising a plurality of termination service area (TSA) devices, each TSA device being connectable to a plurality of customer devices, a public switched-telephone network (PTSN), and a data network, a TSA device having a database, a state machine connected to the database, and local calling circuitry connected to the state machine, when a communications link fails, the state machine:
- establishes an end-to-end voice connection between a first customer device and a second customer device when both the first and the second customer devices are connected to a same TSA device; and
returns an indication that a connection can not be made at this time to a customer device that requested a connection when the first and second customer devices are not connected to the same TSA device.
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Accused Products
Abstract
A next-generation network utilizes a three-tier, cascading fault approach to providing emergency stand-alone (ESA) switching in a circuit-to-packet (C2P) network. Calls that are placed to destination numbers which are connected to the same local network device are completed even when connectivity with a community network level has been interrupted, while calls that are placed to destination numbers which are connected to the same community are completed even when connectivity with a gateway media controller has been interrupted.
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Citations
16 Claims
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1. A network comprising a plurality of termination service area (TSA) devices, each TSA device being connectable to a plurality of customer devices, a public switched-telephone network (PTSN), and a data network, a TSA device having a database, a state machine connected to the database, and local calling circuitry connected to the state machine, when a communications link fails, the state machine:
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establishes an end-to-end voice connection between a first customer device and a second customer device when both the first and the second customer devices are connected to a same TSA device; and returns an indication that a connection can not be made at this time to a customer device that requested a connection when the first and second customer devices are not connected to the same TSA device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating a network device, the method comprising the steps of:
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determining a link status; when the link status is negative, looking up a dialed number in a device database to determine if the dialed number is in the device database; when the dialed number is in the device database, making an end-to-end connection between a first user device and a second user device; and when the dialed number is not in the device database, returning an indication to the first user device that a connection can not be made at this time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification