1、National Standard of CanadaCAN/CSA-ISO/IEC 13246-01(ISO/IEC 13246:1997)International Standard ISO/IEC 13246:1997 (first edition, 1997-12-15), has been adopted withoutmodification as CSA Standard CAN/CSA-ISO/IEC 13246-01, which has been approved as a NationalStandard of Canada by the Standards Counci
2、l of Canada.ISBN 1-55324-328-5 February 2001The Canadian Standards Association, which The Standards Council of Canada is theoperates under the name CSA International coordinating body of the National Standards system, (CSA), under whose auspices this National Standard a federation of independent, au
3、tonomoushas been produced, was chartered in 1919 and organizations working towards the furtheraccredited by the Standards Council of Canada to the development and improvement of voluntaryNational Standards system in 1973. It is a not-for-profit, standardization in the national interest.nonstatutory,
4、 voluntary membership association The principal objects of the Council are to foster engaged in standards development and certification and promote voluntary standardization as a means activities. of advancing the national economy, benefiting theCSA standards reflect a national consensus of health,
5、safety, and welfare of the public, assisting producers and users including manufacturers, and protecting the consumer, facilitating domestic consumers, retailers, unions and professional and international trade, and furthering internationalorganizations, and governmental agencies. The cooperation in
6、 the field of standards.standards are used widely by industry and commerce A National Standard of Canada is a standard whichand often adopted by municipal, provincial, and federal has been approved by the Standards Council ofgovernments in their regulations, particularly in the Canada and one which
7、reflects a reasonablefields of health, safety, building and construction, and agreement among the views of a number of capablethe environment. individuals whose collective interests provide to theIndividuals, companies, and associations across greatest practicable extent a balance ofCanada indicate
8、their support for CSAs standards representation of producers, users, consumers, anddevelopment by volunteering their time and skills to others with relevant interests, as may be appropriateCSA Committee work and supporting the Associations to the subject in hand. It normally is a standardobjectives
9、through sustaining memberships. The more which is capable of making a significant and timelythan 7000 committee volunteers and the 2000 contribution to the national interest.sustaining memberships together form CSAs total Approval of a standard as a National Standard ofmembership from which its Dire
10、ctors are chosen. Canada indicates that a standard conforms to theSustaining memberships represent a major source of criteria and procedures established by the Standardsincome for CSAs standards development activities. Council of Canada. Approval does not refer to theThe Association offers certifica
11、tion and testing services technical content of the standard; this remains thein support of and as an extension to its standards continuing responsibility of the accrediteddevelopment activities. To ensure the integrity of its standards-development organization.certification process, the Association
12、regularly and Those who have a need to apply standards arecontinually audits and inspects products that bear the encouraged to use National Standards of CanadaCSA Mark. whenever practicable. These standards are subject In addition to its head office and laboratory complex to periodic review; therefo
13、re, users are cautioned in Toronto, CSA has regional branch offices in major to obtain the latest edition from the organizationcentres across Canada and inspection and testing preparing the standard.agencies in eight countries. Since 1919, the Association The responsibility for approving National St
14、andards has developed the necessary expertise to meet its of Canada rests with thecorporate mission: CSA is an independent service Standards Council of Canadaorganization whose mission is to provide an open and 270 Albert Street, Suite 200effective forum for activities facilitating the exchange of O
15、ttawa, Ontario, K1P 6N7goods and services through the use of standards, Canadacertification and related services to meet national andinternational needs.For further information on CSA services, write toCSA International178 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaAlthough the intended primary
16、 application of this Standard is stated in its Scope, it is importantto note that it remains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationInformation technology Telecommunications and information exchange
17、between systems Broadband Private Integrated Services Network CAN/CSA-ISO/IEC 13246-01 Inter-exchange signalling protocol Signalling ATM adaptation layerFebruary 2001 CSA/1CAN/CSA-ISO/IEC 13246-01Information technology Telecommunications andinformation exchange betweensystems Broadband PrivateIntegr
18、ated Services Network Inter-exchange signalling protocol Signalling ATM adaptation layerCSA PrefaceStandards development within the Information Technology sector is harmonized with internationalstandards development. Through the CSA Technical Committee on Information Technology (TCIT),Canadians serv
19、e as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 onInformation Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO memberbody for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of theInternational Telecomm
20、unication Union (ITU), Canada participates in the International Telegraph andTelephone Consultative Committee (ITU-T).This International Standard was reviewed by the CSA TCIT under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada.
21、(Acommittee membership list is available on request from the CSA Project Manager.) From time to time,ISO/IEC may publish addenda, corrigenda, etc. The CSA TCIT will review these documents for approvaland publication. For a listing, refer to the CSA Information Products catalogue or CSA Info Update o
22、rcontact a CSA Sales representative. This Standard has been formally approved, without modification, bythese Committees and has been approved as a National Standard of Canada by the Standards Council ofCanada.February 2001 CSA International 2001All rights reserved. No part of this publication may be
23、 reproduced in any form whatsoever without the prior permission ofthe publisher. ISO/IEC material is reprinted with permission. Inquiries regarding this National Standard of Canada shouldbe addressed to CSA International, 178 Rexdale Boulevard, Toronto, Ontario, M9W 1R3.INTERNATIONAL STANDARD lSO/lE
24、C 13246 First edition 1997-12-15 Information technology - Telecommunications and information exchange between Systems - Broadband Private Integrated Services Network - Inter-exchange signalling protocol- Signalling ATM adaptation layer Technologies de Iinforma tion - T6l6communica tions et khange di
25、nforma tion en tre systemes - Reseau priv6 2 /arge bande 2 intkgra tion de Services - Protocole de signalisation dkchange - Couche dadaptation de signalisa tion A TM Reference number ISO/1 EC 13246: 1997(E) ISOIIEC 13246: 1997(E) Conte as a default, it supports the transfer of octet-aligned SDUs up
26、to a maximum of 4 096 octets. - establishment and release of B-QSIG SAAL connections for assured transfer of data. B-QSIG SAAL connections are established during IPL establishment, and reside permanently. However, in certain error seenarios, the SSCF may release B-QSIG SAAL connections to recover fr
27、om error situations. The following SAAL Services may optionally be provided: - unacknowledged transfer of data. The use of this Service is not specified by the B-QSIG layer 3 signalling protocol. Functions of the SSCF and Signalling Protocol Stack Clause 6 of ITU-T Rec. Q.2130 applies with the follo
28、wing exception: - only Point-to-Point B-QSIG SAAL connections shall be supported. In particular, B-QSIG SAAL shall not provide the broadcast capability described in clause 6/Q.2130. Definition of the Boundary of SSCF to B-QSIG-Layer 3 Protocols lause 7 of ITU-T Rec. Q.2130 applies with the following
29、 exceptions: - The support of the AAL-UNITDATA primitive is not mandatory. The use of this primitive is not specified by B-QSIG layer 3 signalling protocol. - The support of layer 3 peer-to-peer messages in the AAL-ESTABLISH and AAL-RELEASE primitives is not mandatory. The use of those Parameter dat
30、a in these primitives is not specified by the B-QSIG layer 3 signalling protocol. Definition of the Boundary of SSCF with SSCOP Clause 8 of ITU-T Rec. Q.2130 applies with the following exception: - The support of the AA-UNITDATA primitive is not mandatory. State Transition Table sf SSCF for Supporti
31、ng B-QSIG Signalling Clause 9 of ITU-T Rec. Q.2130 applies with the exceptions specified in sections 8.4.3 and 8.4.4 above. Boundary to Layer Management No requirements have been identified. Applicability of SSCOP Parameters and Timers to B-QSIG Signalling The values specified in Table 4 of ITU-T Re
32、c. Q.2130 are used as default Parameters. However, parameter- and timer values at the B-QSIG-IPL shall be configurable, in Order to be able to select a proper set of parameter- and timer values depending on the use, condition, IPL link rate, round-trip delay, and receiver resequencing buffer size. A
33、s a general guide, Timer POLL should be set to as large a - value as possible that still maintains throughput efficiency and satisfies the average and maximum delivery of data. For the signalling channels at the Q reference Point, no restrictions to operating at below 10 kbit/s applies. PICS Proform
34、a for SSCOP AND SSCOP-SSCF Annex A applies. SSCF for Semi-Permanent Connection (SPC) Control Signalling Functions for the support of semi-permanent connections are outside the scope of this International Standard. 0 ISO/IEC ISO/IEC 13246: 1997(E) Annex A (normative) Protocol Implementation Conforman
35、ce Statement (PICS) proforma for B-QSIG SAAL A.l Introduction A.l.l Basic reference documents for PICS proforma specifications General rules for the specification of PICS proforma are provided by ISO/IEC 9646-1. Detailed guidance for the specification of PICS proforma is provided by ISO/IEC 9646-7;
36、in particular the structure of a PICS proforma, the questions to be asked, the Syntax and notation to be used and the semantics of the questions and expected answers. For a PICS proforma, specific acronyms and terms are used as defined in ISO/IEC 9646- 1 or ISO/IEC 9646- 7, e.g.: - ICS Implementatio
37、n Conformance Statement - ICS proforma Implementation Conformance Statement proforma - ICS (proforma) item - PICS - PICS proforma A row in an ICS (proforma) table Protocol ICS Protocol ICS proforma - Status (value) (support) answer An allowed entry in the Status column for an item in an ICS proforma
38、 table An allowed entry in the support or supported values columns for an item in an IC,T: question A.l.2 AS.3 Copyright Information Users of this specification may freely reproduce the PICS proforma of this Annex A so that it tan be used for its intended purpose and may further publish the complete
39、d PICS. Structure of this PICS proforma This PICS proforma is subdivided into (sub-)clauses as follows: - Instructions (A.2) - Purpose of a PICS proforma (A.2.1) - Instructions for completing the PICS proforma (A.2.2) - Additional Information (A.2.3) - Exception Information (A.2.4) - Legend for the
40、columns of the PICS proforma tables (A.2.5) - Legend for further indications of the PICS proforma tables (A.2.6) - Identification of the implementation (A.3) including: - Identification of the protocol for which this PICS applies (A.3.7) - Global Statement of conformance (A.4) - SSCOP (A.5) - SSCOP-
41、SSCF B-QSIG Protocol Capabilities (A.6) ISO/IEC 13246: 1997(E) 0 ISO/IEC A.2 A.2.1 A.2.2 A.2.3 A.2.4 6 Instructions Purpose of a PICS proforma To evaluate conformance of a particular implementation, it is necessary to have a. Statement of which capabilities and Options have been implemented for a gi
42、ven OS1 specification. Such a Statement is called an Implementation Conformance Statement (ICS). For protocol specifications, this Statement is called “Protocol Implementation Conformance Statement” (PICS). For the Provision of this Statement, a fixed format questionnaire called PICS proforma has to
43、 be used. A completed PICS proforma is the PICS for the implementation in question. It is an ICS (as defined in ISO/IEC 9646-7) for an implementation or System which Claims to conform to a given specification. The PICS tan have a number of uses, including: - by the protocol implementor, as a check l
44、ist for implernentations to reduce the risk of unintended non- conformance, e.g. through oversight; - by the supplier and acquirer, or potential acquirer, of the implementation, as a detailed indication of the capabilities of the implementation, stated relative to the common basis for understanding
45、provided by the Standards PICS proforma; - by the user or potential user of the implementation, as a basis for initially checking the possibility of interworking with another implementation - while interworking tan never be guaranteed, failure to interwork tan often be predicted from incompatible PI
46、CS - by a protocol tester-, as the basis for selecting appropriate tests against which to assess the Claim for conformance of the implementation. The PICS proforma of this Annex therefore reflect a compromise between these different requirements. Instructions for completing the PICS proforma The sup
47、plier of a protocol implementation which is claimed to conform to this International Standard shall complete the following Protocol Implementation Conformance Statement (PICS) proforma. The PICS proforma is a fixed format questionnaire. The supplier of the implementation shall complete this question
48、naire, in particular identify the implementation, complete the global Statement of conformance, and providing the answers in the rows of the tables in clauses AS - A.6. The structure of the tables is explained in subclauses A.2.5 and A.2.6. For each row in each table, the supplier shall enter an exp
49、licit answer (i.e. by ticking the appropriate “yes”, “no”, or “N/A” in each of the support column boxes provided. Where a support column box is left blank, or where it is marked “N/A” without any tick box, no answer is required. If a “prerequisite line” (see A.2.6 below) is used after a subclause heading or table title, and its predicate is false, no answer is required for the whole sublause or table, respectively. A supplier may also provide - or be required to provide - further information, categorized as either Additional Information or Exception Information.
