Abstract: A method and system are provided for reducing bandwidth usage in TDM CES systems. When a transmitting router receives a signal indicating that the access circuit is other than “normal”, and that therefore any TDM data arriving over the access circuit is not valid, the router signals a receiving router at the far end of a TDM Pseudowire that no packets will be sent and does not send any packets. When the receiving router receives such a signal it starts generating its own packets for placing in its jitter buffer. In this way, the jitter buffer maintains its fill level even when no packets are being sent. When the transmitting router receives notification indicating that its access circuit has returned to normal the router signals the receiving router that status has returned to normal, and begins sending packets again.

Abstract: A method and system are provided for reducing bandwidth usage in TDM CES systems conveying analog data, such as voice data. A transmitting router receiving TDM frames for packetization monitors the digitized analog data in the TDM frames. If the analog data has not changed beyond a configured threshold for a configured length of time, the transmitting router signals the receiving router at the far end of a TDM Pseudowire that no packets for the TDM Pseudowire will be sent. The transmitting router does not send any packets over the TDM Pseudowire, not even packets with empty payloads. The receiving router a receiving such a signal starts to generate its own packets for placing in its jitter buffer. Valid data already within the jitter buffer is played out to the access port, but once this runs out dummy packets placed in the jitter buffer by the receiving router are played out. In this way the jitter buffer maintains its fill level even when no packets are being sent across the TDM Pseudowire.

Abstract: A method and system are provided for reducing bandwidth usage in TDM CES systems conveying analog data, such as voice data. A transmitting router receiving TDM frames for packetization monitors the digitized analog data in the TDM frames. If the analog data has not changed beyond a configured threshold for a configured length of time, the transmitting router signals the receiving router at the far end of a TDM Pseudowire that no packets for the TDM Pseudowire will be sent. The transmitting router does not send any packets over the TDM Pseudowire, not even packets with empty payloads. The receiving router a receiving such a signal starts to generate its own packets for placing in its jitter buffer. Valid data already within the jitter buffer is played out to the access port, but once this runs out dummy packets placed in the jitter buffer by the receiving router are played out. In this way the jitter buffer maintains its fill level even when no packets are being sent across the TDM Pseudowire.

Abstract: A method and system are provided for reducing bandwidth usage in TDM CES systems. When a transmitting router receives a signal that the status of the access circuit is other than “normal”, and that therefore any TDM data arriving over the access circuit is not valid, the transmitting router signals a receiving router at the far end of a TDM Pseudowire that no packets for the TDM Pseudowire will be sent, and does not send any packets over the TDM Pseudowire, not even packets with empty payloads. When the receiving router receives such a signal, it starts to generate its own packets for placing in its jitter buffer. Valid packets already within the jitter buffer are played out to the access port, but once this runs out dummy packets placed in the jitter buffer by the router are played out. In this way, the jitter buffer maintains its fill level even when no packets are being sent across the TDM Pseudowire.

Abstract: A method and system are provided for allowing time-alignment of teleprotection measurements of power signals. Teleprotection observations are communicated between teleprotection ends through a packet switched network. At each end of a teleprotection segment, a teleprotection device communicates with the network through a router providing CES and located at the edge of the network. Playout of the jitter buffers of the CES routers is initiated only if the PDV is acceptable such that confidence that the packets from each CES router to the associated teleprotection device are synchronized. The fill level of the jitter buffer is determined a number of times, and then the average of the determined fill levels is compared with an expected fill level. If the difference between the average of the determined fill levels and the expected fill level exceeds a threshold, then the TDM CES is restarted.