Abstract: In a method of performing the asynchronous delivery of messages from a server to a client, the server receives the messages for the client from a message source. The server and client communicate over a packet network using an asymmetric protocol that requires request messages to be originated from the client to the server. At least one request message is sent in advance from the client to the server, and these request messages are stored at the server. When the server receives a message for the client from the message source, it forwards the message to the client as a response to a stored request message.

Abstract: In a method of performing the asynchronous delivery of messages from a server to a client, the server receives the messages for the client from a message source. The server and client communicate over a packet network using an asymmetric protocol that requires request messages to be originated from the client to the server. At least one request message is sent in advance from the client to the server, and these request messages are stored at the server. When the server receives a message for the client from the message source, it forwards the message to the client as a response to a stored request message.

Abstract: Method and apparatus providing intelligent fault recovery are presented. The apparatus includes line card equipment separating control plane components from data plane components enabling a control plane reset while the data plane remains operational at least to the extent that content conveyed in respect of currently provisioned services continues to be processed therethrough. Detected faults are categorized in accordance with a group of severity levels and recovery behavior is specified for each fault severity level. As a guiding principle of the engineered failure mitigation response provided, the control plane of a fault affected line card is reset in an attempt to mitigate an experienced fault condition; the entire line card being reset only as a last resort and only to restore service.