Cobranet - Transmission - Packets


Four main types of packet are used in the transmission and synchronization of CobraNet:

  • Beat packets – the conductor outputs a beat packet to all other CobraNet devices on the network at a rate of 750 packets per second. All other CobraNet devices on the network synchronize their audio clock and their data transmissions to the beat packet. The beat packet contains network operating parameters, clock data and transmission permissions for multicast and unicast bundles.
  • Audio packets – also known as isochronous data packets, these packets are sent out by all CobraNet devices after they receive a beat packet. At standard latency settings, one audio packet is sent for each beat packet received, and each audio packet includes 64 samples of audio data per channel. At lower latency settings, audio packets may be sent twice or four times for each beat packet received. Bundles do not share packets; separate packets are sent in sequence for each bundle transmitted from the same device.
  • Reservation packets – these packets are transmitted as needed or typically once per second at minimum. Their function is to control bandwidth allocation, initiate connections between CobraNet devices, and monitor the status of CobraNet devices.
  • Serial bridge packets – asynchronous serial data may be sent between CobraNet devices on the same network. Many standard asynchronous serial formats are supported, including RS-232, RS-422, RS-485 and MIDI.

Read more about this topic:  Cobranet, Transmission

Other articles related to "packets":

Sliding Window Protocol - Examples - Go-Back-N - Ambiguity Example
... This is because, after transmitting 7 packets, there are 8 possible results Anywhere from 0 to 7 packets could have been received successfully ... If the transmitter sent 8 packets without waiting for acknowledgment, it could find itself in a quandary similar to the stop-and-wait case does the acknowledgment mean that all 8 packets were ...
Link Quality Report
... LQR only transmits counts of packets sent, received, and rejected with errors ... These counters include Packets Transmitted Packets received Octets (or bytes) transmitted Octets received Number of LQRs transmitted Number of LQRs received Number of Octets ... Any peer that wants to receive LQR packets signals this by sending a PPP configuration Option with the following data Type - always 4 Length - always 8 Quality Protocol - 0xC025 for Link Quality Reports ...
... SQLFilter is a plugin for OmniPeek that indexes packets and trace files into an SQLite database ... The packets can then be searched using SQL queries ... The matching packets are loaded directly into OmniPeek and analyzed ...
Steamboats Of The Mississippi - Washington, LA
... boat and then transferred to the steam packets for shipment to New Orleans ... In 1860 there were 93 steam packets operating in the Bayou Courtableau trade, as compared with 90 in Bayou Lefourche and 94 in Bayou Teche ... of molasses, 30,000 dozen poultry, As many as 93 packets came to Washington during the steamboat era which ended in 1900 ...
SIP Connection - Deployment Issues
... other traffic, such as email or Web browsing, voice and even signaling packets may be dropped and the voice stream may be interrupted ... some networks use the TOS precedence or DiffServ fields in the header of IPV4 packets to mark the relative time-sensitivity of SIP and RTP as compared to web, email, video and other types of ... conflict, but the efficacy of this solution is dependent on the number of packets dropped between the Internet and the PBX ...