1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-0300097.2017 Structure for the Identification of Communications Connections for Information Exchange As a leading technology and solutions development organization, the Alliance for Telecommunications Industry Solutions (ATIS) brings together t
2、he top global ICT companies to advance the industrys most pressing business priorities. ATIS nearly 200 member companies are currently working to address the All-IP transition, 5G, network functions virtualization, big data analytics, cloud services, device solutions, emergency services, M2M, cyber
3、security, network evolution, quality of service, billing support, operations, and much more. These priorities follow a fast-track development lifecycle from design and innovation through standards, specifications, requirements, business use cases, software toolkits, open source solutions, and intero
4、perability testing. ATIS is accredited by the American National Standards Institute (ANSI). The organization is the North American Organizational Partner for the 3rd Generation Partnership Project (3GPP), a founding Partner of the oneM2M global initiative, a member of the International Telecommunica
5、tion Union (ITU), as well as a member of the Inter-American Telecommunication Commission (CITEL). For more information, visit www.atis.org. AMERICAN NATIONAL STANDARD Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteri
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7、ecessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made towards their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the sta
8、ndards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover,
9、 no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAU
10、TION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current in
11、formation on all standards by calling or writing the American National Standards Institute. Notice of Disclaimer mandatory and recommendation. The mandatory requirements are designated by the word shall and recommendation by the word should. Where both a mandatory requirement and a recommendation ar
12、e specified for the same criterion, the recommendation represents a goal currently identifiable as having distinct compatibility or performance advantages. This standard contains two annexes which are for information only and is not considered part of this standard. Suggestions for improvement of th
13、is standard are welcome. These should be sent to the Alliance for Telecommunications Industry Solutions, TMOC, 1200 G Street NW, Suite 500, Washington DC 20005. At the time it approved this document, TMOC, which is responsible for the development of this Standard, had the following leadership: M. Us
14、ry, TMOC Chair and Technical Editor (iconectiv) Trademark Acknowledgments iconectiv, Telcordia and Common Language are registered trademarks and EC and IAC are trademarks and the Intellectual Property of Telcordia Technologies, Inc. dba iconectiv. ATIS-0300097.2017 iii Table of Contents 1 SCOPE (2)
15、a facility assembly; or (3) combinations of carrier facility systems and facility assemblies. 3.3 Channel: A unit of assignable inventory within a carrier facility system. Channels may sometimes be referred to as assignment slots or time slots. 3.4 Code Structure: The basic characteristics of a code
16、; its length and generic representation. 3.5 Data: A representation of facts, concepts, or instructions that are collected, organized, recorded, processed, and stored in a retrievable form suitable for communication, interpretation, or processing by human or automated means. This definition refers t
17、o a group of facts taken as a unit; thus it is used with a singular verb. 3.6 Data Composite: A collection of data elements treated as a unit. 3.7 Data Element: A single unit of data that in a certain context is considered indivisible. It cannot be decomposed into more fundamental segments of data t
18、hat have useful meanings within the business. 3.8 Data Unit: A single kind of data for which the identification and description are identical for all occurrences. It may be a data element or a data composite. 3.9 Delimiter: Values which provide a means to identify the beginning and end of adjacent f
19、ields for mechanized systems, and to simplify overall code readability. While the specific values may differ from system to system, acceptable values are either an asterisk (*), virgule (/), or a period (.). 3.10 Facility: A physical or derived communications path between two locations, which can be
20、 intraoffice as well as interoffice. A facility is bounded by its transmission signal input to its equivalent transmission signal output, or its 1This document is available from the U.S Government Printing Office (GPO). 2This document is available from the Alliance for Telecommunications Industry So
21、lutions (ATIS) at . 3This document is available from ATIS at . 4This document is available from the International Telecommunication Union (ITU). ATIS-0300097.2017 3 point of termination. A facility has the same capacity at each end and normally carries assignable channels, pairs, or time slots. 3.11
22、 Facility Assembly: A group of interconnected equipment and transmission media uniquely identified and dedicated to a specific type of service. 3.12 Format Structure: A combination of data units grouped in a prescribed sequence. 3.13 Leg: A loop termination of a multipoint circuit that links a bridg
23、e to the end user location. 3.14 Open Wire: Non-insulated metallic conductors that are tied to insulators usually on cross arms, which are bolted to poles. 3.15 Pair: Two conductors used to form a transmission path. 3.16 Physical Facility: A transmission facility that consists only of a real and tan
24、gible interconnecting link between its terminals, such as open wire, fiber optic, or metallic cable (not a derived path). 3.17 Time Slot: A cyclic time period that can be recognized and uniquely defined. 3.18 World Zone 1: Multiple countries which have an integrated numbering plan with the Country C
25、ode value “1”, as per Recommendation ITU-T E.164. 4 General Each data element shall consist of sequences of characters, each character being either an alphabetic (A-Z) or numeric (0-9). (See clauses 5.3.3 and 6.2.2 for additional requirements for symbols.) In the format structures of clause 6, desig
26、nation is provided for character positions that require alphabetic, numeric, or either alphabetic or numeric characters. The alphabetic characters shall be considered as case insensitive; that is, there shall be no distinction made between upper and lower case letters. However, it is recommended tha
27、t the code be represented with upper case letters. Within Annex A, the indication of is representative of blank positions within the depicted formats. 5 Data Units Clause 5 of this standard describes data elements and data composites that are used to construct the message trunk, special services cir
28、cuit and facility identification code formats of clause 6. 5.1 Message Trunk Data Units 5.1.1 Trunk Number A serial number type code that identifies a specific trunk in a trunk group. This data element shall consist of one to four numeric characters. 5.1.2 Traffic Class A standardized code that desi
29、gnates an engineering categorization e.g., grade of service, alternate route. This data element consists of two alphabetic characters. 5.1.3 Office Class A standardized code that designates the highest level of switching performed by the traffic units or offices terminating the trunk or trunk group
30、e.g., grade of service, alternate route. This data element consists of two characters, one for each end of the trunk or trunk group, and where each character may be alphabetic or numeric. ATIS-0300097.2017 4 5.1.4 Traffic Use A standardized code that designates the type of traffic offered to the tru
31、nk group e.g., inter-end office, tandem access, directory assistance. This data element consists of two alphabetic characters. 5.1.5 Trunk-Type Modifier A standardized code that indicates specialized use of the trunk or trunk group i.e., only a portion of traffic, or enhanced information, is carried
32、 over the trunk or trunk group, such as coin, non-coin, bit rate. This data element consists of one to seven characters, each of which may be alphabetic or numeric. 5.1.6 Location A A standardized code that uniquely identifies the location of facility terminal A (i.e., lower in alphabetic sequence o
33、f the two facility terminal location codes), which is the physical site location at which communications equipment or personnel are located, the function of equipment or personnel at the site, or a customers presence at a location at which network elements or network systems equipment exists. This d
34、ata composite shall consist of either eight or eleven characters, as allowed by the requirements of ATIS-0300253. Complete definition of this data composite may be found in this standard. 5.1.7 Address Signaling A standardized code that designates the type of signals used to direct a call to its des
35、tination e.g., multi-frequency, common channel signaling, switching system 7. This data element consists of two characters, each of which may be alphabetic or numeric. The first character is the type of signaling outgoing from the Location A. The second character is the type of signaling outgoing fr
36、om Location Z, or is a “-” (hyphen) for one-way groups. 5.1.8 Location Z A standardized code that uniquely identifies the location of facility terminal Z (i.e., higher in alphabetic sequence of the two facility terminal location codes), for which the description is equivalent to that of the Location
37、 A in clause 5.1.6. 5.2 Special Service Circuit Data Units 5.2.1 Prefix A non-standard code populated according to the special services circuit coding methodology of each carrier or network operator assigning the circuit identification. This data element consists of two characters, each of which may
38、 be alphabetic or numeric. 5.2.2 Service Code A standardized code that represents a service offering that requires special services circuit provisioning. This data element consists of two characters, each of which may be alphabetic or numeric. 5.2.3 Service Code Modifier A standardized code that des
39、ignates the jurisdiction, networking application, and additional technical information of the service identified in the service code of clause 5.2.2. This data element consists of two characters, each of which may be alphabetic or numeric. ATIS-0300097.2017 5 5.2.4 Numbering Plan Area (NPA) A standa
40、rdized code that identifies the NPA (commonly called an area code) associated with the telephone number of a special services circuit. This data element is used in the telephone number format only, and consists of three numeric characters. 5.2.5 Central Office (CO) Code A standardized code that iden
41、tifies the CO (also called exchange, prefix, or NXX) number associated with the telephone number of a special services circuit. This data element is used in the telephone number format only, and consists of three numeric characters. 5.2.6 Line Number A standardized code that identifies the line numb
42、er associated with the telephone number of a special services circuit. This data element is used in the telephone number format only, and consists of four numeric characters. 5.2.7 Extension Number/Trunk A non-standard code used to record extension numbers/trunk codes associated with the telephone n
43、umber of a special services circuit. This data element is used in the telephone number format only, and consists of one to five characters, each of which may be alphabetic or numeric. 5.2.8 Country Code Number The combination of one, two, or three digits used to identify a specific country, countrie
44、s in an integrated numbering plan, or a specific geographic area, as prescribed in Recommendation ITU-T E.164. 5.2.9 National (Significant) Number The National (Significant) Number or N(S)N consists of the National Destination Code (NDC) followed by the Subscriber Number (SN). The function and forma
45、t of the National Significant Number is nationally determined. Recommendation ITU-T E.164 recommends that the maximum number of digits of the National Significant Number should be equal to 12, or 15-n, where n is the number of digits of the Country code. The National Destination Code identifies a nu
46、mbering area within a country (or group of countries included in one integrated numbering plan or a specific geographic area) and/or network/services. The Subscriber Number identifies a subscriber in a geographic area. The structure and functionality of the Subscriber Number is determined by the net
47、work operator. 5.2.10 Segment Name A serial value type code uniquely identifying each termination point of a special services circuit, when the circuit has more than two termination points i.e., multipoint circuit. This data element consists of one to three characters, each of which may be alphabeti
48、c or numeric. 5.2.11 Serial Number A serial number type code that uniquely identifies a special services circuit having the same prefix (clause 5.2.1), service code (clause 5.2.2), and service code modifier (clause 5.2.3) within a network operator or carrier assigning the circuit identification. Thi
49、s data element is associated with the serial number format only. It is used when no telephone number is associated with the special services circuit. This data element consists of one to six numeric characters. ATIS-0300097.2017 6 5.2.12 Suffix A serial number type code that relates a group of special services circuits having the same service code (clause 5.2.2) for the same customer, and with similar termination equipment at each end. The suffix is also used on multipoint circuits when the number of legs to be coded exceeds the coding power of the segment number (clau
