摘要:
A protected passive optical communications system includes terminals, a main head end, and a back up head end allowing communication with the terminals when a fault occurs. The main and back up head ends transmit frames that include header and payload portions to the terminals. The main head end normally transmits control instructions in the header and user data in the payload. The back up head end, in response to a fault, transmits control instructions in the payload, and a control message in the header. The control message indicates control instructions in the payload. If a control message is in the header, each terminal interprets the payload as control instructions for changing operational attribute(s) of a terminal. If a control message is not in the header, each terminal interprets the payload as user data that it forwards to external user(s) external based on an address from the user data.
摘要:
The present disclosure provides improvements with respect to in-band control plane signaling, virtualized channels, and tandem connection monitoring in optical networks utilizing Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), Optical Transport Network (OTN), and the like. In an exemplary embodiment, the present disclosure includes an optical network operating a control plane with in-band signaling utilizing SONET/SDH path level overhead. In another exemplary embodiment, the present disclosure includes an optical network operating virtualized SONET/SDH or OTN channels with manually cross-connections at intermediate line terminating elements. In yet another exemplary embodiment, the present disclosure includes a tandem connection monitoring selection method across multiple operator domains.
摘要:
A signaling processor processes a first message to select a TDM connection for the call and transfers a second message indicating the selected TDM connection. The interworking unit receives the second message and user communications for the call in a packet format, converts the user communications from the packet format to a TDM format, and transfers the user communications in the TDM format over the selected TDM connection. The interworking unit monitors the user communications for a trigger after call set-up and during the call, and if the trigger is detected, transfers a third message indicating the trigger. The signaling processor receives and processes the third message to select routing information for routing the call to a service platform and transfers a fourth message indicating the selected routing information to route the call to the service platform.
摘要:
A method for establishing a network connection service includes: initiating a request for establishing a network connection service from the user side of a source end to the user side of a sink end; a network ingress node and network egress node of the network connection service negotiating through message exchange to determine a network connection between the two nodes for supporting the network connection service and a protocol adaptation stack from the user side to the network side in the network connection service; and the network ingress node and the network egress node establishing the network connection supporting the network connection service and configuring the adaptation stack, so as to establish the network connection service.
摘要:
A method is disclosed for providing a signaling channel for performing one or more signaling functions at the Ethernet level. The telecommunication of interest is organized by information packets forming an information flow, and the method comprises utilizing a combined flow composed of the information flow and one or more service flows formed from service packets being multiplexable with the information packets at the Ethernet level. The service packets belonging to a particular service flow carry an indication of a signaling function to be performed, while the one or more service flows form the signaling channel at the Ethernet level.
摘要:
A method, computer software program, and system provides automatic selection of time slots in time-division multiplexed connections. A network is mapped, and source and destination nodes are selected, as well as a route between them. Appropriate time slots are selected in a time-division multiplexed signal between the selected nodes, and a connection between the two nodes is automatically created, based at least in part on information related to the selected routes and time slots.
摘要:
A distributed network switching system includes a data network. The system also includes multiple access interworking function (A-IWF) devices each operating as a gateway that enables customer premises devices to directly interface into the data network. The system further includes a centralized control and signaling interworking function (CS-IWF) device that performs call control functions and administrative functions and is adapted to interface narrowband and broadband signaling for call processing and control within the data network.
摘要:
Routing frames in a communication ring includes receiving an invitation at a proxy server of a node of a ring. The invitation indicates that a first endpoint is initiating a call to a second endpoint. An access device operable to communicate the call to the second endpoint is identified. The access device has a private network identifier uniquely identifying the access device within the ring. A media path to the access device is reserved. The private network identifier is inserted into frames received from the first endpoint in order to route the frames to the second endpoint through the media path.
摘要:
A communications interface on a data path between a plurality of data channels and a single communications port on a processor. The communications interface controls data as it passes on a receive path from the plurality of data channels to the single communications port and on a transmit path from the single communications port to the plurality of data channels and is adapted to use a memory to buffer the data when necessary. The communications interface (i) adds a channel identifier, which identifies to which data channel the data relates, to the data on the receive path so that the processor will be able to determine to which data channel the data relates and (ii) removes a channel identifier from the data on the transmit path so that the data will leave the communications interface in the same format in which it was received.
摘要:
A signaling processor processes a first message to select a TDM connection for the call and transfers a second message indicating the selected TDM connection. The interworking unit receives the second message and user communications for the call in a packet format, converts the user communications from the packet format to a TDM format, and transfers the user communications in the TDM format over the selected TDM connection. The interworking unit monitors the user communications for a trigger after call set-up and during the call, and if the trigger is detected, transfers a third message indicating the trigger. The signaling processor receives and processes the third message to select routing information for routing the call to a service platform and transfers a fourth message indicating the selected routing information to route the call to the service platform.