Abstract: An apparatus associated with a device connected to a data loop processes data received from the data loop to determine whether data from the data loop is to be routed back to the data loop. The apparatus may determine how to route data based on an analysis of whether the device is authorized to participate in a conversation currently associated with the data loop. Thus, latency otherwise imparted by the device when the device processes the data may be avoided.

Abstract: A crosspoint switch uses an iterative process to deliver multicast packets from inputs to outputs. The switch includes output queues dedicated to the inputs, with backpressure indications provided from the output queues to the corresponding inputs. The inputs use the backpressure indications to schedule multicast packets for delivery to one or more of the output queues.

Abstract: A crosspoint switch uses an iterative process to deliver multicast packets from inputs to outputs. The switch includes output queues dedicated to the inputs, with backpressure indications provided from the output queues to the corresponding inputs. The inputs use the backpressure indications to schedule multicast packets for delivery to one or more of the output queues.

Abstract: A system and method are disclosed for processing digital signals in a telecommunications system that allow for hit-less switching between a first digital signal in which a first payload, a first pointer value, and a first frame are transported on a first channel, and a second digital signal in which a second payload identical to the first payload, a second pointer value, and a second frame are transported on a second channel. The present invention includes first and second pointer followers, first and second comparators, a delay buffer with control circuit, first, second, third and fourth multiplexers, and a pointer generator. The delay buffer control circuit further comprises a write counter, a read counter, a phase detector, and a leak-out mechanism for reinitializing the delay buffer. The present invention aligns the payloads of the first and second digital signals to allow for hit-less selection between them.

Abstract: A system and method are disclosed for processing digital signals in a telecommunications system that allow hit-less switching between a first digital signal in which a first payload, a first payload indicator marker and a first overhead are transported on a first channel, and a second digital signal in which a second payload identical to the first payload, a second payload indicator marker and a second overhead are transported on a second channel. The present invention includes first and second pointer followers, first and second elastic buffers with control circuits, a monitor circuit, a multiplexer, and a pointer generator. The first and second elastic buffer control circuits each further comprise a write counter, a read counter, a phase detector, and a leak-out mechanism for reinitializing the system after a protection switch. The present invention hit-lessly selects between the first and second digital signals without having to frame align the signals.