Introduction to NMOS

EHX v.13.1 and above

Networked Media Open Standards (NMOS) is a set of specifications developed by Advanced Media Workflow Association (AMWA) to ensure interoperability for streaming audio, video, and data in a networked environment. NMOS standards allow manufacturers to develop a commonly usable control and management layer that is additional to the transport layer provided by SMPTE ST2110.

NMOS helps users to leverage some of the benefits of IP technology for intercoms, for example:

• Simplified connectivity

• Easier distribution

• The use of commercially available off-the shelf (COTs) technologies

• NMOS can facilitate the virtualization of workflows in a media environment

Clear-Com supports the following elements of the NMOS specifications:

• IS-04 Discovery and registration

• IS-05 Device connection management

Clear-Com’s E-IPA implementation of NMOS allows you to expose the E-IPA-HX interface card to a network as an NMOS compatible node. This allows 3rd party controllers and registries to monitor AES67 streams from the card (1,2,4 or 8 channels per stream) and connect streams to/from other nodes on the network.

Note:

For this release, enabling the E-IPA-HX card for NMOS will disable other types of transmission on the card. All other port types will be removed when configuration to enable NMOS is applied to the matrix (Apply Map to Matrix).

Note:

Because the number of ports in a stream is configured at card level, all connections on a card must use the same number of ports in a stream.

Note:

E-IPA-HX NMOS card mode cannot be used with the N+1 E-IPA card redundancy feature.

Further resources and information:

https://www.amwa.tv/nmos-overview

https://specs.amwa.tv/nmos-testing/

https://www.smpte.org/webcast/exploring-the-role-of-nmos (video 1 hour)

last accessed 15th November 2022

Note:

Please refer to the user information provided for your 3rd party NMOS controller. How to configure the NMOS controller and the use of the AMWA NMOS testing tool are beyond the scope of this guide.

Note:

Using NMOS requires an AoIP feature license. For example, E-IPA-AoIP-8-HX.