摘要:
An isochronous output data stream format which is time multiplexed and has a fixed time period where input isochronous data streams are multiplexed into the output isochronous data stream and the output data stream is the same data rate as the fastest input isochronous data stream. One or more of the input data streams contain a code which has been run length limited and/or has a zero running digital sum with banded disparity. In another embodiment, an isochronous output data stream format which is time multiplexed and has a fixed time period where input isochronous data streams are multiplexed into the output isochronous data stream and the output data stream is the sum of the maximum input isochronous data streams. One or more of the data streams contain a code which has been run length limited and/or has a zero running digital sum with banded disparity.
摘要:
A virtual transport server apparatus in a telecommunication network having a packet network and a circuit network with a telephonic switching device, a circuit signaling interface for terminating a signaling link between the virtual transport server apparatus and the telephonic switching device coupled to the circuit network and a packet signaling interface for terminating a packet link between the virtual transport server apparatus and the packet network. A circuit receiver is coupled to a processor and the circuit signaling interface for receiving call origination information having a circuit identification code from the telephonic switching device at the circuit receiver and a packet transmitter coupled to the processor and the packet signaling interface for transmitting the call origination information from the virtual transport server apparatus to a packet circuit gateway in response to the processor processing the call origination information from the circuit receiver. Additionally, a packet receiver is coupled to the processor and the packet signaling interface for receiving virtual circuit information and in response to the processor processing the received virtual circuit information transmitting from the packet transmitter to another virtual transport server apparatus the call origination information and the virtual circuit information.
摘要:
A circuit comprising a plurality of communication devices each configured to receive and transmit one or more data packets in response to one or more control signals and a control circuit configured to generate the one or more control signals in response to the one or more data packets.
摘要:
The present invention includes an improved switching device (400) which operates in a shared media environment. The switching device (400) in accordance with the present invention includes a tag header processing means (402) operable to insert a tag header into frames that enter the switching device (400) without a tag header and CRC processing means (404) operable to calculate a CRC for the frame excluding the tag header for use while the frame is being processed within the switching device (400). The tag header processing means (402) is further operable, when the internal switch processing of the frame is completed and the frame is ready to be transmitted, to determine whether or not the frame should be transmitted without a tag header and removing the tag header if it is not. The CRC processing means (404) is further operable to calculate a CRC for the frame when the internal processing of the frame is completed and, if the frame was originally received with a tag header, to corrupt the CRC if needed based on parity bits included in the tag header when the frame was received.
摘要:
An open Services architecture for inter working narrow band services with equivalent broad band services delivers services on both the existing narrow band network and a future broad band network based on flexible signalling connections. The architecture incorporates an adaptive grooming router providing a fully interconnected backbone network function providing connectivity between a plurality of multimedia access routers and a narrow band network. The multimedia access routers provide hub points where access units terminating ISDN basic access and primary rate access lines used for multimedia services are terminated.
摘要:
A network switch includes network switch ports, and switching logic for determining the output port for each received layer 2 type data packet. The switching logic includes an address table configured for storing address-based switching decisions, a trunk table configured for assigning each network switch port to a corresponding identified trunk, and a trunk distribution table identifying the network switch ports assigned to each identified trunk. The switching logic determines the output port for each corresponding received layer 2 type data packet based on a corresponding switching decision for the received layer 2 type data packet, and based on selection of an entry in the trunk distribution table based on information within the received layer 2 type data packet. Hence, the network switch is able to perform trunk-based switching with minimal complexity, ensuring switching of data packets at the wire rate.
摘要:
The invention relates to a method and a device for increasing a data throughput in network applications for the transmission of data at high speed, for example, the internet, via a packet oriented cordless data network, for example, the GPRS network. The internet application provides for data in the form of data packets (n,n+1,n+2,n+3, . . . ). In case of transmission via the internet the data packets are transmitted via different paths, which is why the data packets are available to the GPRS network at an intermediate node in the wrong sequence. Also, data packets get lost, which upon a new request are available also in the wrong sequence. Due to a different bandwidth a number of data packets is available for transmission at the intermediate node of the GPRS network while a first data packet is transmitted. The sequence of the available data packets is determined and the data packets are sorted for being available for transmission in a sorted sequence.
摘要:
An apparatus having an identification code in a communication network comprising a transceiver coupled to the communication network receiving a message having an alias identification code assigned to a switch call controller and a separate independent switch fabric controller portion. The apparatus also having a processor coupled to the transceiver, an input/output port for communicating with the independent switch fabric controller device, for sending a resource allocation message to the input/output port for transmission to the switch fabric device in response to receiving the message having the switch fabric data portion.
摘要:
A method and apparatus for filtering a packet in a network is disclosed. The packet includes a packet header and packet data. The packet is intercepted. It is then determined if an access list exists for the packet, the access list including filtering criteria that dictates filtering of the packet in accordance with contents of the packet data. If no access list is determined to exist for the packet, the packet is forwarded. However, if an access list is determined to exist for the packet, the packet is filtered in accordance with the filtering criteria stored in the access list.