Session initiation protocol survivable server
First Claim
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1. A method for selecting an operating mode of a first server in a communication network, the method comprising:
- sending a session initiation protocol (SIP) polling message from the first server to a second server using a first communication link, the first server is coupled to at least one endpoint configured as an analog telephone device; and
monitoring for a reply message from the second server, the reply message based on the polling message and upon receiving the reply message selecting a first mode of operation for the first server, wherein when in the first mode of operation, the second server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the first communication link; and
upon absence of the reply message, selecting a second mode of operation for the first server, wherein when in the second mode of operation, the first server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using a second communication link of the communication network, the second communication link separate from the first communication link and including a public switched telephone network (PSTN).
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Abstract
This document discusses, among other things, a telephony network having a server configured to provide selected communication functions following failure of a primary server.
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Citations
25 Claims
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1. A method for selecting an operating mode of a first server in a communication network, the method comprising:
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sending a session initiation protocol (SIP) polling message from the first server to a second server using a first communication link, the first server is coupled to at least one endpoint configured as an analog telephone device; and monitoring for a reply message from the second server, the reply message based on the polling message and upon receiving the reply message selecting a first mode of operation for the first server, wherein when in the first mode of operation, the second server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the first communication link; and upon absence of the reply message, selecting a second mode of operation for the first server, wherein when in the second mode of operation, the first server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using a second communication link of the communication network, the second communication link separate from the first communication link and including a public switched telephone network (PSTN). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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an interface configured to couple to a wide area network (WAN), a local area network (LAN), at least one endpoint configured as an analog telephone device, and a public switched telephone network (PSTN); a processor coupled to the interface and having instructions stored thereon configured to; send a session initiation protocol (SIP) polling message from the interface to a remote server using the WAN, the interface coupled to at least one endpoint configured as an analog telephone device; and monitor for a reply message from the remote server, the reply message based on the polling message and upon receiving the reply message, select a first mode of operation for the interface, wherein when in the first mode of operation, the remote server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the WAN; and upon absence of the reply message, select a second mode of operation for the interface, wherein when in the second mode of operation, the interface is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the LAN and the PSTN, the LAN separate from the WAN. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A non-transitory computer readable medium having instructions stored thereon for executing a method comprising:
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receiving registration information from each of at least one endpoint of a local area network (LAN), the LAN coupled to a first server configured for communicating a session initiation protocol (SIP) message with a second server using a wide area network (WAN); determining availability of the second server; and if the second server is operable, then sending the registration information on the WAN to the second server, the second server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the WAN; and if the second server is inoperable, then registering the at least one endpoint with the first server and forwarding contact information for a destination endpoint from the first server to the at least one endpoint to enable communications between the at least one endpoint and the destination endpoint using a public switched telephone network (PSTN) coupled to the first server. - View Dependent Claims (16, 17, 18, 19)
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20. A non-transitory computer readable medium having instructions stored thereon for executing a method comprising:
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receiving registration information from each of at least one endpoint of a local area network (LAN), the LAN coupled to a first server configured for communicating a session initiation protocol (SIP) message with a first link to a wide area network (WAN); determining operability of the first link; and if the first link is operable, then sending the registration information on the WAN to a second server coupled to the WAN, the second server is configured to register the at least one endpoint and configured to enable the at least one endpoint to communicate using the first link; and if the first link is inoperable, then registering the at least one endpoint with the first server and forwarding contact information for a destination endpoint from the first server to the at least one endpoint to enable communications between the at least one endpoint and the destination endpoint using a second link separate from the first link, the second link including a public switched telephone network (PSTN). - View Dependent Claims (21, 22, 23, 24, 25)
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Specification