IEEE 1722-2011 pdf free.IEEE Standard for L ayer 2 Transport Protocol for Time-Sensitive Applications in Bridged Local Area Networks.
IEEE 1722 specifies the protocol, data encapsulations, and presentation time procedures used to ensure interoperability between audio- and video-based end stations that use standard networking services provided by all IEEE 802 networks meeting quality-of-service requirements for time-sensitive applications by leveraging the concepts of IEC 61883.
1.2 Purpose
This standard will facilitate interoperability between stations that stream time sensitive audio and/or video across LANs providing time synchronization and latency/bandwidth services by defining the packet format protocols and synchronization mechanisms.
2. Normative references
The following referenced documents and URLs are indispensable for the application of this document (ie, they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
For the purposes of this document, the following terms and definitions apply. The IEEE StandardLc Diciionar: Glossary of Terms Definitions should be consulted for terms not defined in this clause.
3.1 Conformance levels
Several keywords are used to differentiate between diftircnt levels of requirements and optionally, as follows:
may: Indicates a course of action permissible within the limits of the standard with no implied preference (“may” means “is pennitted to”).
shall: Indicates mandatory requirements strictly to be followed in order to conform to the standard and from which no deviation is permitted (“shall” means “is required to’).
should: An indication that among several possibilities. one is recommended as particularly suitable. without mentioning or excluding others: or that a certain course of action is preferred but not necessarily required: or that (in the negative form) a certain course of action is deprecated but not prohibited (“should” means “is recommended to”).
3.2 Definitions
Audio/Video Transport Protocol (AVTP): The protocol defined by IEEE Std 1722-2011. As an adjective, it indicates that the modified noun is specified in or interpreted in the context of this standard.
audio/video bridging (AVfl) bridge: A bridge that implements IEEE Std 802.1Qlu20O5 as amended by the Stream Reservation Protocol (SRP). Forwarding and Queuing Enhancements for Time Sensitive Streams (FQTSS), and implements the generalized Precision Time Protocol (gPTP).
AudIo/Video transport Protocol (AVTP) stream: An AVTP stream is between one Talker and one or more Listeners.
Audio/Video Transport Protocol (AVTP) gateway: A device that transports AVTP audio/video streams between an audio/video bridging AV13) network and another type of media, for example. an IEEE 1394 bus.
doublet: Two octets of data.
frame: A frame is a complete unit of data transmission as transmitted on the network, including media access control (MAC) layer addressing and cyclic redundancy check (CRC).IEEE 1722 pdf free download.