1、 Standard ECMA-312 International 3rd Edition - June 2003 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) Profile Standard for the Use of PSS1 (QSIG) in Air Traffic Services Networks Phone/Fax: +41 22 849.60.00/01 - http:/www.ecma-international.org - mai
2、lto: helpdeskecma.ch . Standard ECMA-312 International 3rd Edition - June 2003 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) Profile Standard for the Use of PSS1 (QSIG) in Air Traffic Services Networks Phone/Fax: +41 22 849.60.00/01 - http:/www.ecma-i
3、nternational.org - mailto: helpdeskecma.ch IW ECMA-312.doc 02-07-03 11,33 . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and
4、conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This Standard specifies the functional profile for interconnecting Private Integrated services Network eXchanges (PINX) in Air Traffic Services (ATS) PISNs to permit interoperability between
5、equipment from different vendors. This Standard is based upon the practical experience of ECMA member companies and the results of their active and continuous participation in the work of ISO/IEC JTC1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic
6、 and widely based consensus. Compared to the 2nd Edition of Standard ECMA-312 (published by ECMA in June 2001), this 3rd Edition incorporates changes proposed in the light of practical experience gained from implementations based upon the 2nd Edition. Adopted as 3rd Edition of Standard ECMA-312 by t
7、he General Assembly of June 2003. . - i - Table of contents 1 Scope 1 2 Conformance 1 3 References (normative) 1 4 Definitions 2 4.1 External definitions 2 5 List of acronyms 3 6 Specification framework 4 6.1 General 4 6.2 Terminal Equipment (TE) 5 6.3 Private Termination System (PTS) 5 6.4 Switchin
8、g (SW) 5 6.5 Mapping (MP) 5 6.6 Call Control (CC) 5 7 Physical interface and protocol stack at the C reference point 6 8 Switching (SW) functions 6 8.1 Speech compression 6 9 Mapping (MP) functions 6 9.1 Physical layer functions 6 9.1.1 Physical and electrical interface requirements 7 9.1.2 Rate ada
9、ptation and sub-multiplexing 7 9.1.3 Alarm Indication Signal (AIS) 7 9.1.4 Synchronisation 7 9.2 Data link layer functions 7 9.2.1 General procedures 7 9.2.2 System parameters 8 9.3 Octet synchronisation procedure 8 10 Call Control (CC) functions - End PINX case 8 10.1 Basic call establishment and c
10、learing 8 10.2 Message segmentation and re-assembly 9 10.3 STATUS ENQUIRY procedure 9 10.4 Overlap sending / receiving procedures 9 10.5 Call request and transmission of the SETUP message 9 10.6 Information channel selection 9 10.7 Agreement of channel and call proceeding 10 10.8 Call confirmation i
11、ndication 10 - ii - 10.9 Call connected 10 10.10 Use of the PROGRESS message 10 10.11 Failure of call establishment 10 10.12 Call clearing 10 10.13 Call collisions 11 10.14 Alternative routeing 11 10.15 Timer values 11 10.16 Support of information elements 12 10.16.1 General 12 10.16.2 Bearer capabi
12、lity 12 10.16.3 Call state 13 10.16.4 Called party number 13 10.16.5 Calling party number 13 10.16.6 Cause 14 10.16.7 Channel identification 14 10.17 Restart procedure for layer management 14 10.18 Generic Functional Protocol 14 10.18.1 Applicable parts of the Generic Functional Protocol 14 10.18.2
13、Support of information elements 15 10.18.3 Integer encoding of operation values 16 10.19 Specific supplementary services 16 10.20 Priority interruption and intrusion 16 10.20.1 Signalling procedures 16 10.20.2 Call control procedures 18 10.20.3 Invocation of priority functions at Originating PINX 18
14、 10.20.4 Execution of SS-CPI 20 10.21 Transit counter 20 11 Call Control (CC) functions - Transit PINX case 20 11.1 General 20 Annex A - Requirements List (RL) 23 Annex B - Profile specific ICS proforma 39 Annex C - Facility information element contents encoding 45 1 Scope This Profile Standard spec
15、ifies the combination of base standards, together with the selection of appropriate options and parameter values, necessary to specify how QSIG / PSS1 can be used to provide digital signalling capabilities between Private Integrated services Networks eXchange (PINX) in an Air Traffic Services (ATS)
16、PISN. This Standard defines: - physical and electrical characteristics (physical layer) of the interfaces to the transmission systems to be employed; - data link layer procedures to ensure error-free communications links; - network layer procedures for call establishment and clearing; and - suppleme
17、ntary services to meet specific ATS requirements. This Standard states requirements upon implementations in order to achieve interoperability between equipment in ATS PISNs. NOTE 1 Implementation of this Standard does not preclude a manufacturer from offering other means of interconnection. This Sta
18、ndard does not specify requirements related to interworking between QSIG and other signalling systems used in ATS PISNs. 2 Conformance A system conforms to this Standard if it correctly performs all the mandatory capabilities defined in the Requirement List (RL) (annex A) and the profile specific Im
19、plementation Conformance Statement (ICS) (annex B). Note that more capabilities may be mandatory than in the base standards. 3 References (normative) The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. All standards are subject to
20、 revision, and parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. In the case of references to ECMA Standards that are aligned with ISO/IEC International Standards, the number of the approp
21、riate ISO/IEC International Standard is given in brackets after the ECMA reference. ECMA-133 Private Integrated Services Network (PISN) - Reference Configuration for PISN Exchanges (PINX) (International Standard ISO/IEC 11579-1) ECMA-143 Private Integrated Services Network (PISN) - Circuit Mode Bear
22、er Services - Inter-Exchange Signalling Procedures and Protocol (International Standard ISO/IEC 11572) ECMA-165 Private Integrated Services Network (PISN) - Generic Functional Protocol for the Support of Supplementary Services - Inter-Exchange Signalling Procedures and Protocol (International Standa
23、rd ISO/IEC 11582) ECMA-203 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Intrusion Supplementary Service (International Standard ISO/IEC 14846) ECMA-225 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Transit Counter Addition
24、al Network Feature (International Standard ISO/IEC 15056) ECMA-253 Private Integrated Services Network (PISN) - Mapping Functions for the Employment of 64 kbit/s Circuit Mode Connections with 16 kbit/s Sub-Multiplexing (International Standard ISO/IEC 17310) - 2 - ECMA-264 Private Integrated Services
25、 Network (PISN) - Inter-Exchange Signalling Protocol - Call Priority Interruption and Call Priority Interruption Protection Supplementary Services (International Standard ISO/IEC 15992) ETS 300 290 Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D6
26、4U); Terminal equipment interface (1994) ETS 300 290 Amd. 1 Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); Terminal equipment interface (1995) ETS 300 402-1 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No
27、. one (DSS1) protocol; Data link layer; Part 1: General aspects ITU-T Recommendation Q.920 (1993), modified (1995) ETS 300 402-2 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 2: General protocol specification ITU-T Rec
28、ommendation Q.921 (1993), modified (1995) ETS 300 402-4 Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 4: Protocol Implementation Conformance Statement (PICS) proforma specification for the general protocol (1999) ISO/I
29、EC 9646-7 Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 7: Implementation Conformance Statements (1994) ITU-T Rec. G.728 Coding of speech at 16 kbit/s using low-delay code excited linear prediction (1992) ITU-T Rec. I.112 Vocabulary of t
30、erms for ISDNs services (1993) ITU-T Rec. I.130 Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN (Blue Book) (1988) ITU-T Rec. I.140 Attribute technique for the characterization of telecommunication services supported by an ISDN a
31、nd network capabilities of an ISDN (1993) ITU-T Rec. I.210 Principles of telecommunication services supported by an ISDN and the means to describe them (1993) ITU-T Rec. T.50 International Reference alphabet (IRA) (Formerly International Alphabet No. 5 or IA5) - Information technology - 7-bit coded
32、character set for information interchange (1992) 4 Definitions For the purposes of this Standard, the following definitions apply. 4.1 External definitions This Standard uses the following terms defined in other documents: C reference point (ECMA-133) Destination PINX (ECMA-165) End PINX (ECMA-165)
33、Gateway PINX (ECMA-143) Incoming Call (ECMA-143) Inter-PINX Connection (ECMA-253) Inter-PINX Link (ECMA-253) Mapping functional group (ECMA-133) Originating PINX (ECMA-143) - 3 - Outgoing Call (ECMA-143) Preceding PINX (ECMA-165) Private Integrated Services Network (PISN) (ECMA-133) Private Integrat
34、ed Services Network Exchange (PINX) (ECMA-133) Q reference point (ECMA-133) Side, Incoming Side and Outgoing Side (ECMA-143) Source PINX (ECMA-165) S reference point (ECMA-133) Subsequent PINX (ECMA-165) Terminating PINX (ECMA-143) Transit PINX (ECMA-143) 5 List of acronyms ACSE Association Control
35、Service Element AIS Alarm Indication Signal ANF Additional Network Feature APDU Application Protocol Data Unit ASN.1 Abstract Syntax Notation One ATS Air Traffic Services CC Call Control CICL Call Intrusion Capability Level CIPL Call Intrusion Protection Level CPICL Call Priority Interruption Capabi
36、lity Level CPIPL Call Priority Interruption Protection Level DSE Dialogue Service Element ETS European Telecommunication Standard GFT Generic Functional Transport HLC High Layer Compatibility i Irrelevant ICS Implementation Conformance Statement IPCC Inter-PINX Connection Control LD-CELP Low Delay C
37、ode Excited Linear Prediction LLC Low Layer Compatibility m Mandatory MP MaPping n/a Not Applicable NFE Network Facilities Extension o Optional o.i Optional, qualified - 4 - PINX Private Integrated Services Network Exchange PISN Private Integrated Services Network PSS1 Private Signalling System no.
38、1 PTS Private Termination System QSIG Q reference point SIGnalling system RL Requirements List ROSE Remote Operations Service Element SCM Signalling Carriage Mechanism SS-CI Call Intrusion Supplementary Service SS-CPI Call Priority Interruption Supplementary Service SS-CPIP Call Priority Interruptio
39、n Protection Supplementary Service SW SWitching TE Terminal Equipment TEI Terminal Endpoint Identifier x eXcluded 6 Specification framework 6.1 General The approach taken in this Standard is to define the detailed digital signalling functions within the framework of functional groupings defined in t
40、he reference configuration for PISN eXchanges (ECMA-133). This approach abstracts the specification of the functions from any realisation as a real piece of equipment. At the same time it provides a complete model of a hypothetical system that can easily be translated to a physical implementation. N
41、OTE 2 The use of such a framework for describing the required functions need not constrain solutions for providing the functions nor is it intended to imply any particular design architecture. It simply provides a convenient method of specifying the required functions and, later on, the tests to con
42、firm that such functions are supported by a particular piece of equipment. The major PINX functions and their relationships are illustrated in figure 1; the functions are described in the following paragraphs. MPSWTEPINXPTSCQCCSFigure 1 Major PINX functions - 5 - The model in figure 1, and the funct
43、ionality defined by it, represents a single instance of a service invocation (i.e., a call). A PINX claiming conformance with this Standard shall be capable of providing multiple simultaneous instances of the defined functions. 6.2 Terminal Equipment (TE) The TE function provides the necessary means
44、 for a human user, by actions at the Human Machine Interface, to initiate outgoing calls to or respond to incoming calls from another TE function. The TE function may be simple (e.g., a simple telephone handset) or complex (e.g., an ATS Controller Working Position). The detailed requirements of this
45、 function are outside the scope of this Standard. 6.3 Private Termination System (PTS) The PTS function provides transmission and signalling capabilities between the TE function and the SW function. The PTS function, if necessary, adapts the physical, electrical and procedural conditions of the inte
46、rface used to attach a TE to the PINX, to the internal conditions of the PINX. The detailed requirements of this function are outside the scope of this Standard. 6.4 Switching (SW) The SW function provides the capability to switch user information and signalling information. User information is swit
47、ched between the PTS function and the MP function. Selection of the switching path depends upon the parameters of the service request. Signalling information is switched between: - the PTS function and the CC function; and - between the CC function and the MP function. NOTE 3 The switching function
48、may also switch both user and signalling information between the described functions and other functions outside the scope of this Standard. The detailed requirements of this function are specified in clause 8. 6.5 Mapping (MP) The MP function provides adaptation of the internal conditions of the PI
49、NX to the physical, electrical, and procedural conditions of the interface used to attach the PINX to an external transmission facility (e.g., a leased circuit) for inter-PINX communications. The MP function also provides the multiplexing functions required to separate or merge the user information and signalling information from the PINX to the transmission facility employed. The detailed requirements of this function are specified in clause 9. 6.6 Call Control (CC) The CC function provides the functions necessary to control calls betwee
