ART Area General Applications Working Group D. Thakore, Ed.
Internet-Draft CableLabs
Intended status: Informational N. Dang
Expires: October 6, 2016 SCTE
G. Hughes
April 4, 2016

A Uniform Resource Name (URN) Namespace for SCTE


This document describers the Namespace Identifier (NID) 'scte' for Uniform Resource Names (URNs) used to identify resources published by the Society of Cable Telecommunications Engineers (SCTE). SCTE specifies and manages resources that utilize this URN identification model. Management activities for these and other resource types are handled by the SCTE.

Requirements Language

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119].

Status of This Memo

This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79.

Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet-Drafts is at

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This Internet-Draft will expire on October 6, 2016.

Copyright Notice

Copyright (c) 2016 IETF Trust and the persons identified as the document authors. All rights reserved.

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Table of Contents

1. Introduction

The SCTE standards program is an ANSI-accredited forum for the development of technical specifications supporting cable telecommunications. SCTE standards work includes: data and telephony over cable; application platform development; digital video; emergency alert systems; network monitoring systems; cables, connectors and amplifiers; construction and maintenance practices; energy management, and more.

Occasionally, SCTE specification efforts require identifiers in a managed namespace so that they are unique and persistent. To ensure that the uniqueness is absolute, the registration of a specific Uniform Resource Name (URN) Namespace Identifier (NID) for use by SCTE is being speified in this document, in full conformance with the NID registration process specified in RFC3406 [RFC3406]

2. URN Specification for SCTE

Namespace ID:

Registration Information:

Declared registrant of the namespace:

Declaration of syntactic structure:

Relevant ancillary documentation:

Identifier uniqueness considerations:

Identifier persistence considerations:

Process of identifier assignment:

  1. Registered values associated with SCTE documents or services
  2. Registration of values or sub-trees to other entities
  3. Name models for use in experimental purposes

Process of identifier resolution:

Rules for lexical equivalence:

Validation mechanism:


3. Example

The following example represents a hypothetical URL that could be assigned by SCTE.

This example defines the URN to be used for for ANSI/SCTE 214-1 2015 “MPEG DASH for IP-Based Cable Services Part 1: MPD Constraints and Extensions”

4. Namespace Considerations

SCTE develops specifications that may require the use of data models. URN Namespaces are key constructs to manage the definitions of those data models reliably with persistence and uniqueness.

The use of URNs should also help specification authors to maintain different versions of URNs and dependencies between URNs across different versions of SCTE specifications if they so wish.

5. Community Considerations

Participants involved in the development and usage of SCTE specifications and cable industry deployments will benefit from the publication of this namespace by providing consistent and reliable names for the XML namespaces, schema locations, and similar identifiers of physical data models published within SCTE specifications.

The SCTE specifications are publicly available and are licensed to manufacturers on a nondiscriminatory basis. SCTE will maintain the corresponding specifications where the registered resources are referenced or used.

6. IANA Considerations

This document adds a new entry ("scte") in the urn-namespaces registry. This is the defining document for the entry. The entry can be found in the Uniform Resource Names (URN) Namespaces [IANA-URN] Registry.

7. Security Considerations

There are no additional security considerations other than those normally associated with the use and resolution of URNs in general, which are described in [RFC1737], [RFC2141], [RFC3406]

8. Acknowledgements

The authors acknowledge that the text from [RFC6289] formed the basis for the initial version of this document.

9. References

9.1. Normative References

[IANA-URN] IANA, "Uniform Resource Names (URN) Namespaces"
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2141] Moats, R., "URN Syntax", RFC 2141, DOI 10.17487/RFC2141, May 1997.
[RFC3406] Daigle, L., van Gulik, D., Iannella, R. and P. Faltstrom, "Uniform Resource Names (URN) Namespace Definition Mechanisms", BCP 66, RFC 3406, DOI 10.17487/RFC3406, October 2002.
[RFC7749] Reschke, J., "The "xml2rfc" Version 2 Vocabulary", RFC 7749, DOI 10.17487/RFC7749, February 2016.

9.2. Informative References

[RFC1737] Sollins, K. and L. Masinter, "Functional Requirements for Uniform Resource Names", RFC 1737, DOI 10.17487/RFC1737, December 1994.
[RFC4234] Crocker, D. and P. Overell, "Augmented BNF for Syntax Specifications: ABNF", RFC 4234, DOI 10.17487/RFC4234, October 2005.
[RFC6289] Cardona, E., Channabasappa, S. and J-F. Mule, "A Uniform Resource Name (URN) Namespace for CableLabs", RFC 6289, DOI 10.17487/RFC6289, June 2011.
[SANN] Society of Cable Telecommunications Engineers, "SCTE Assigned Name and Number Registry"

Authors' Addresses

Darshak Thakore (editor) CableLabs 858 Coal Creek Circle Louisville, CO 80023 US EMail: URI:
Niem Dang Society of Cable Telecommunications Engineers 140 Philips Road Exton, PA 19341-1318 US EMail: URI:
Gary Hughes SeaChange International Inc. 50 Nagog Park Acton, MA 01720 US EMail: URI: