1、A Joint Publication of:American Association of State Highway and Transportation Officials (AASHTO) Institute of Transportation Engineers (ITE)National Electrical Manufacturers Association (NEMA)NTCIP Standards PublicationNTCIP 2101:2001 v01.19National TransportationCommunications for ITS ProtocolPoi
2、nt to Multi-Point Protocol Using RS-232 Subnetwork ProfileA Joint Standard of AASHTO, ITE, and NEMAA Joint Standard of AASHTO, ITE, and NEMANTCIP 2101:2001 v01.19National Transportation Communications for ITS Protocol Point to Multi-Point Protocol Using RS-232 Subnetwork Profile November 26, 2001 Pu
3、blished byAmerican Association of State Highway and Transportation Officials (AASHTO) 444 North Capitol Street., N.W., Suite 249 Washington, D.C. 20001 Institute of Transportation Engineers (ITE)1099 14th Street, N.W., Suite 300 West Washington, D.C. 20005-3438 National Electrical Manufacturers Asso
4、ciation (NEMA)1300 North 17th Street, Suite 1847 Rosslyn, Virginia 22209-3801 2001 AASHTO / ITE / NEMA. All rights reserved. Do Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA 2001 by the American Association of State Highway and Transportation Officials (AASHTO), the Institute of Trans
5、portation Engineers (ITE), and the National Electrical Manufacturers Association (NEMA). All intellectual property rights, including, but not limited to, the rights of reproduction in whole or in part in any form, translation into other languages and display are reserved by the copyright owners unde
6、r the laws of the United States of America, the Universal Copyright Convention, the Berne Convention, and the International and Pan American Copyright Conventions. Except for the MIB or the PRL, do not copy without written permissionof either AASHTO, ITE, or NEMA. NTCIP 2101:2001 v01.19 Page i 2001
7、AASHTO / ITE / NEMA Do Not Copy Without Written Permission ACKNOWLEDGEMENTS This publication was prepared by the NTCIP Profiles Working Group, which is a subdivision of the Joint Committee on the NTCIP. The Joint Committee is organized under a Memorandum of Understanding among the American Associati
8、on of State Highway and Transportation Officials (AASHTO), the Institute of Transportation Engineers (ITE), and the National Electrical Manufacturers Association (NEMA). The Joint Committee on the NTCIP consists of six representatives from each of the standards organizations, and provides guidance f
9、or NTCIP development. At the time that this document was prepared, the following individuals were active members of the NTCIP Profiles Working Group: Jas Bhullar Doug Crawford Bob De Roche Bob Force Bud Kent Paul Lim-Hing Bob Martindale Amit Misra Alex Mousadi Kenneth Vaughn Other individuals provid
10、ing input to the document, include: Bob Barrett Joey Baumgartner Thomas Bryer Blake Christie Ken Earnest Dave Kingery Don Ninke Brian Paulsmeyer Dale Peabody Jeff Racz Joerg “Nu” Rosenbohm Dan Vanada Hoi Wong Gary Workman In addition to the many volunteer efforts, recognition is also given to those
11、organizations who supported the efforts of the working groups by providing comments and funding for the standard, including: ARINC Caltrans NTCIP DMS Working Group Eagle Traffic Control Systems Econolite Control Products Federal Highway Administration ITE Iteris JPL Mastec Ministry of Transportation
12、, Ontario Minnesota Department of Transportation NTCIP 2101:2001 v01.19 Page iiDo Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA Mitretek Naztec PB Farradyne Peek Traffic Systems Robert De Roche Consulting Skyline Products Southwest Research Institute Trevilon VHB Virginia Department o
13、f Transportation NTCIP 2101:2001 v01.19 Page iii 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission FOREWORD This document uses only metric units. This document defines a subnetwork profile that is a combination of standards intended to meet specific requirements for data transfers to a
14、nd from roadside devices in either a networked or direct-connect environment. This document is an NTCIP Subnetwork Profile Standard. Subnetwork Profile (SP) Standards provide definitions and requirements for the data link and physical layers of a communications stack that follows the OSI Basic Refer
15、ence Model. The text includes mandatory requirements in Annex A that are defined as normative. For more information about NTCIP standards, visit the NTCIP Web Site at http:/www.ntcip.org. For a hardcopy summary of NTCIP information, contact the NTCIP Coordinator at the address below. In preparation
16、of this NTCIP document, input of users and other interested parties was sought and evaluated. Inquires, comments, and proposed or recommended revisions should be submitted to: NTCIP Coordinator National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847 Rosslyn, VA 22209-3801 fa
17、x: (703) 841-3331 e-mail: ntcipnema.org Approvals This document was separately balloted and approved by AASHTO, ITE, and NEMA after recommendation by the Joint Committee on the NTCIP. Each organization has approved this standard as the following standard type, as of the date: AASHTO Standard Specifi
18、cation; December 2000 ITE Software Standard; May 2001 NEMA Standard; May 2001 History From 1996 to 1999, this document was referenced as NEMA TS 3.SP-PMPP232. However, to provide an organized numbering scheme for the NTCIP documents, this document is now referenced as NTCIP 2101. The technical speci
19、fications of NTCIP 2101 are identical to the former reference, except as noted in the development history below: TS 3.SP-PMPP232 v98.01.07. August 1998 Accepted as a User Comment Draft by the Joint Committee on the NTCIP. NTCIP 2101 v99.01.17. October 1999 Accepted as a Recommended Standard by the J
20、oint Committee on the NTCIP. Approved by AASHTO and ITE. NTCIP 2101 v01.18. April 2001 Approved by NEMA after disposition of Ballot Comment. NTCIP 2101:2001 v01.19 Page ivDo Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA NTCIP 2101:2001 v01.19. November 2001 Formatted for printing: inc
21、remented version number and revised date; modified and reorganized front matter to conform to NTCIP 8002; revised the Annex A Reproduction Notice; updated references to TS 3.4 to NTCIP 1201:1996 v01.08. NTCIP 2101:2001 v01.19 Page v 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission INT
22、RODUCTION The context of the NTCIP is one part of the Intelligent Transportation Systems standardization activities covering base standards, profiles, and registration mechanisms. Base Standards define procedures and rules for providing the fundamental operations associated with communications and i
23、nformation that is exchanged over fixed-point communications links. Profiles define subsets or combinations of base standards used to provide specific functions or services. Profiles prescribe particular subsets or options available in base standards necessary for accomplishing a particular function
24、 or service. This provides a basis for the development of uniform, nationally recognized conformance. Registration Mechanisms provide a means to specify and uniquely identify detailed parameters within the framework of base standards and/or profiles. Within the Joint Committee on the NTCIP, the Prof
25、iles Working Group is concerned with the methodology of defining profiles, and the definition and documentation of profiles in Standards Publications. This document is intended to provide a complete subnetwork profile (SP) that specifies the communications over an asynchronous, half-duplex or full-d
26、uplex dedicated digital circuit. This SP specifies the requirements for an unbalanced connectionless operation. This subnetwork profile can be used with different transport profiles (TP) addressing the network and transport layers with protocols such as UDP or TCP, or it can be used directly with an
27、 application profile (AP) such as the Simple Transportation Management Framework. The objective is to facilitate the specification of ITS systems characterized by a high degree of interoperability and interchangeability of its components. This publication defines a subnetwork profile that is a combi
28、nation of standards intended to meet specific requirements for data transfers to and from roadside devices in either a networked or direct-connect environment. The purpose of this standard is to provide the information necessary to establish a connection using the Point to Multi-Point Protocol (PMPP
29、) via an RS-232 interface. This combination of protocols and standards has been combined in a profile termed SP-PMPP232 within the NTCIP. The SP-PMPP232 is a subnetwork specification and uses protocols and standards to address the Data Link Layer (Layer 2 of the OSI Reference Model) and Physical Lay
30、er (Layer 1 of the OSI Reference Model) to manage connected devices that coexist on a common channel. The SP-PMPP232 supports a variety of upper layer protocols over a common physical implementation. It contains mandatory requirement statements that are applicable to all devices claiming conformance
31、 to this standard. It also contains options and conditional requirements, which may be applicable to a specific environment in which a device is used. In 1992, the NEMA 3-TS Transportation Management Systems and Associated Control Devices Section began the effort to develop the NTCIP. The Transporta
32、tion Sections purpose was to respond to user needs to include standardized systems communication in the NEMA TS 2 standard, Traffic Controller Assemblies. Under the guidance of the Federal Highway Administrations NTCIP Steering Group, the NEMA effort was expanded to include the development of commun
33、ications standards for all transportation field devices that could be used in an Intelligent Transportation Systems (ITS) network. In September 1996, an agreement was executed among AASHTO, ITE, and NEMA to jointly develop, approve, and maintain the NTCIP standards. The Joint Committee on the NTCIP
34、created the Profiles Working Group to develop a method for organizing Class Profiles. The first meeting of the working group was in September 1997. After research into how national and international standards organizations combine protocols and standards to address all seven layers of the OSI Basic
35、Reference Model, the committee adopted the approach defined in the NTCIP Profile Framework. Following that approach, a protocol stack was specified by application, transport, and subnetwork profiles. An application profile addresses the NTCIP 2101:2001 v01.19 Page viDo Not Copy Without Written Permi
36、ssion 2001 AASHTO / ITE / NEMA application, presentation, and session layers. A transport profile addresses the transport and network layers. A subnetwork profile addresses the data link and physical layers. The NTCIP - Point to Multi-Point Protocol Using RS-232 Subnetwork Profile (SP - PMPP232) is
37、a subnetwork profile for use in center-to-roadside communications. NTCIP 2101:2001 v01.19 Page vii 2001 AASHTO / ITE / NEMA Do Not Copy Without Written Permission If you are not willing to abide by the following notices, return these materials immediately. Joint AASHTO, ITE, and NEMA NTCIP Managemen
38、t Information Base and Data Dictionary DISTRIBUTION NOTICE To the extent and in the limited event these materials are distributed by AASHTO/ITE/NEMA in the form of a Management Information Base (“MIB”) or Data Dictionary (“DD”), AASHTO / ITE / NEMA extends the following permissions: (i) you may make
39、 and/or distribute unlimited copies (including derivative works) of the MIB, including copies for commercial distribution, provided that (a) each copy you make and/or distribute contains this Notice and (b) each derivative work of the MIB uses the same module name followed by “-,” followed by your I
40、nternet Assigned Number Authority (IANA)-assigned enterprise number; (ii) use of the MIB is restricted in that the syntax field may be modified only to reflect a more restrictive subrange or enumerated values; (iii) the description field may be modified but only to the extent that: (a) only those bi
41、t values or enumerated values that are supported are listed; and (b) the more restrictive subrange is expressed. These materials are delivered “AS IS” without any warranties as to their use or performance. AASHTO / ITE / NEMA AND THEIR SUPPLIERS DO NOT WARRANT THE PERFORMANCE OR RESULTS YOU MAY OBTA
42、IN BY USING THESE MATERIALS. AASHTO/ITE/NEMA AND THEIR SUPPLIERS MAKE NO WARRANTIES, EXPRESS OR IMPLIED, AS TO NONINFRINGEMENT OF THIRD PARTY RIGHTS, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. IN NO EVENT WILL AASHTO, ITE, OR NEMA OR THEIR SUPPLIERS BE LIABLE TO YOU OR ANY THIRD PARTY F
43、OR ANY CLAIM OR FOR ANY CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES, INCLUDING ANY LOST PROFITS OR LOST SAVINGS, ARISING FROM YOUR REPRODUCTION OR USE OF THESE MATERIALS, EVEN IF AN AASHTO, ITE, OR NEMA REPRESENTATIVE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Some states or jurisdiction
44、s do not allow the exclusion or limitation of incidental, consequential, or special damages, or the exclusion of implied warranties, so the above limitations may not apply to you. Use of these materials does not constitute an endorsement or affiliation by or between AASHTO, ITE, or NEMA and you, you
45、r company, or your products and services. NTCIP Profile Requirements List REPRODUCTION NOTICE AASHTO / ITE / NEMA extend permission to the purchaser of this standards publication to make and/or distribute unlimited copies (including derivative works, which will then be known as PICS) of the excerpt
46、identified as the Profile Requirements List, including copies for commercial distribution, provided that each copy made or distributed contains the notice “Based on an NTCIP Profile Requirements List. Used by permission of AASHTO / ITE / NEMA.” DisclaimerThe information in this publication was consi
47、dered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. AASHTO, ITE, and NEMA
48、standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic NTCIP 2101:2001 v01.19 Page
49、viiiDo Not Copy Without Written Permission 2001 AASHTO / ITE / NEMA covered by this publication. While AASHTO, ITE, and NEMA administer the process and establish rules to promote fairness in the development of consensus, they do not write the document and they do not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in their standards and guideline publications. AASHTO, ITE, and
