摘要:
Methods and apparatus to manage Internet Protocol (IP) Multimedia Subsystem (IMS) network capacity are disclosed. An example method comprises identifying a terminating voice over Internet protocol (VoIP) call server associated with a called device, and returning a call rejection indicator when the terminating VoIP call server is in a first condition, the call rejection indicator returned without a call initiation request message sent to the terminating VoIP call server.
摘要:
Methods and apparatus to route a communication session in an Internet Protocol (IP) Multimedia Subsystem (IMS) network are disclosed. An example method comprises determining at a tElephone NUMber mapping (ENUM) query server if a called destination associated with an ENUM query request message is subject to re-direction, and determining at the ENUM server a final destination for the called destination when the destination is subject to redirection, the final destination being different from the called destination.
摘要:
Methods and apparatus for handling a communication session for an unregistered Internet Protocol Multimedia Subsystem (IMS) device are disclosed. An example method includes, in response to receiving an internet protocol multimedia subsystem session initiation message from a user endpoint, determining whether the user endpoint is registered; and, when the user endpoint is determined to be unregistered: determining whether the internet protocol multimedia subsystem session initiation message is directed to an exception endpoint by performing a lookup on a list; determining whether a profile for the unregistered user endpoint is available; when the profile for the user endpoint determined to be unregistered is unavailable, loading a default profile; and establishing an internet protocol multimedia subsystem session on behalf of the user endpoint determined to be unregistered when the internet protocol multimedia subsystem session initiation message is directed to the exception endpoint.
摘要:
Methods and apparatus for handling a communication session for an unregistered Internet Protocol Multimedia Subsystem (IMS) device are disclosed. An example method comprises receiving an IMS session initiation message from an un-registered user endpoint, determining whether the IMS session initiation message is directed to an exception endpoint, and establishing an IMS session on behalf of the unregistered user endpoint when the IMS session initiation is directed to the exception endpoint.
摘要:
Methods and apparatus to manage Internet Protocol (IP) Multimedia Subsystem (IMS) network capacity are disclosed. An example method comprises identifying a terminating voice over Internet protocol (VoIP) call server associated with a called device, and returning a call rejection indicator when the terminating VoIP call server is in a first condition, the call rejection indicator returned without a call initiation request message sent to the terminating VoIP call server.
摘要:
Methods and apparatus for handling a communication session for an unregistered Internet Protocol Multimedia Subsystem (IMS) device are disclosed. An example method comprises receiving an IMS session initiation message from an un-registered user endpoint, determining whether the IMS session initiation message is directed to an exception endpoint, and establishing an IMS session on behalf of the unregistered user endpoint when the IMS session initiation is directed to the exception endpoint.
摘要:
Methods and apparatus to route a communication session in an Internet Protocol (IP) Multimedia Subsystem (IMS) network are disclosed. An example method comprises determining at a tElephone NUMber mapping (ENUM) query server if a called destination associated with an ENUM query request message is subject to re-direction, and determining at the ENUM server a final destination for the called destination when the destination is subject to redirection, the final destination being different from the called destination.
摘要:
Example methods and apparatus to control synchronization in voice over Internet protocol (VoIP) networks after catastrophes are disclosed. An example border element comprises a network interface to receive a VoIP network registration request message from a VoIP endpoint, a catastrophe detector to determine whether a catastrophe has been detected, a backoff time module to compute a backoff time using a priority assigned to the VoIP endpoint and an expected number of VoIP network registration request messages, a recovery module to determine whether the VoIP endpoint is currently registered with the VoIP network, and to send a response message having a header representing the backoff time to the VoIP endpoint when the catastrophe has been detected and the VoIP endpoint is not currently registered with a VoIP network, and a signaling processor to process the VoIP network registration request message when the VoIP endpoint is currently registered with the VoIP network.
摘要:
A client of a telephone number mapping (ENUM) server is used to protect the ENUM server from a Denial of Service (DoS) attack. The DoS attack may comprise a plurality of attempts to place exception calls from one or more end user devices that are unregistered. The one or more end user devices may originate from a service provider network.
摘要:
Example methods and apparatus to control synchronization in voice over Internet protocol (VoIP) networks after catastrophes are disclosed. An example border element comprises a network interface to receive a VoIP network registration request message from a VoIP endpoint, a catastrophe detector to determine whether a catastrophe has been detected, a backoff time module to compute a backoff time using a priority assigned to the VoIP endpoint and an expected number of VoIP network registration request messages, a recovery module to determine whether the VoIP endpoint is currently registered with the VoIP network, and to send a response message having a header representing the backoff time to the VoIP endpoint when the catastrophe has been detected and the VoIP endpoint is not currently registered with a VoIP network, and a signaling processor to process the VoIP network registration request message when the VoIP endpoint is currently registered with the VoIP network.