NMOS Transports
This Transports parameter register contains values that may be used to identify a transport protocol, used in the transport property of the sender and receiver resources defined in the AMWA IS-04 NMOS Discovery and Registration Specification.
Criteria
- Values used for the
transportproperty are not required to be included in this parameter register. - Each entry MUST define a unique transport name (which is a URN).
- Each entry MUST have a short description.
- Each entry SHOULD provide a link to a specification for the transport, as well as identifying any AMWA Specifications and versions for which the entry is applicable.
- Additions and updates to this parameter register are to be submitted via a Pull Request (PR) according to the General Procedures and Criteria.
Manufacturers MAY use their own namespaces to indicate transports which are not currently defined within the NMOS namespace.
Note: AMWA IS-04 specifies general requirements for the construction and use of URNs in NMOS specifications.
Values
RTP
- Name:
urn:x-nmos:transport:rtp - Description: Identifies the Real-time Transport Protocol.
- Specification: AMWA IS-04 v1.0
- Applicability: AMWA IS-04 since v1.0, IS-05 since v1.0
Note: An RTP Transmitter sending to a multicast group should use the transport urn:x-nmos:transport:rtp.mcast, but a receiver supporting both unicast and multicast should present the transport urn:x-nmos:transport:rtp to indicate its less restrictive state.
RTP Multicast
- Name:
urn:x-nmos:transport:rtp.mcast - Description: Identifies RTP multicast.
- Specification: AMWA IS-04 v1.0
- Applicability: AMWA IS-04 since v1.0, IS-05 since v1.0
Note: The IS-05 v1.1 /transporttype endpoint returns the URN base; the subclassification is removed.
RTP Unicast
- Name:
urn:x-nmos:transport:rtp.ucast - Description: Identifies RTP unicast.
- Specification: AMWA IS-04 v1.0
- Applicability: AMWA IS-04 since v1.0, IS-05 since v1.0
Note: The IS-05 v1.1 /transporttype endpoint returns the URN base; the subclassification is removed.
DASH
- Name:
urn:x-nmos:transport:dash - Description: Identifies the Dynamic Adaptive Streaming over HTTP technology.
- Specification: AMWA IS-04 v1.1
- Applicability: AMWA IS-04 since v1.1, IS-05 since v1.0
MQTT
- Name:
urn:x-nmos:transport:mqtt - Description: Identifies Message Queuing Telemetry Transport (MQTT).
- Specification: AMWA IS-05 v1.1
- Applicability: AMWA IS-04 since v1.3, IS-05 since v1.1, IS-07 since v1.0
WebSocket
- Name:
urn:x-nmos:transport:websocket - Description: Identifies the WebSocket transport type.
- Specification: AMWA IS-05 v1.1
- Applicability: AMWA IS-04 since v1.3, IS-05 since v1.1, IS-07 since v1.0