ECMA325-2001 Private Intergrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Short Message Service.pdf
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1、 Standard ECMA-325 June 2001 Standardizing Information and Communication Systems Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch Private Integrated Services Network (PISN) Inter-Exchange Signalling Protocol Short Message Service . Standard ECMA-32
2、5 June 2001 Standardizing Information and Communication Systems Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch IW ECMA-325.doc 04-09-02 09,38 Private Integrated Services Network (PISN) Inter-Exchange Signalling Protocol Short Message Service (QSI
3、G-SMS) . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Digital Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework of International Standards on Ope
4、n Systems Interconnection as defined by ISO/ IEC. It has been produced under ETSI work item DTS/ECMA-00228. This particular Standard specifies the signalling protocol for use at the Q reference point in support of the Short Message Service. The protocol defined in this Standard forms part of the PSS
5、1 protocol (informally known as QSIG). 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 pra
6、gmatic and widely based consensus. This ECMA Standard is contributed to ISO/IEC JTC1 under terms of the fast-track procedure, for adoption as an ISO/IEC International Standard. This ECMA Standard has been adopted by the General Assembly of June 2001. . List of corrected errata for ECMA-325 25 Septem
7、ber 2001 Summary Following is a summary of errors detected and corrected in Standard ECMA-325, Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Short Message Service. Clause 6.3.1 Operations, table 1 Replace ambiguous tags (SmsExtension uses tags 1 and 2). Original S
8、msSubmitRes := SEQUENCE serviceCentreTimeStamp ServiceCentreTimeStamp, protocolIdentifier 2 IMPLICIT ProtocolIdentifier OPTIONAL, userData 3 IMPLICIT UserData OPTIONAL, smsExtension SmsExtension OPTIONAL Corrected SmsSubmitRes := SEQUENCE serviceCentreTimeStamp ServiceCentreTimeStamp, protocolIdenti
9、fier 3 IMPLICIT ProtocolIdentifier OPTIONAL, userData 4 IMPLICIT UserData OPTIONAL, smsExtension SmsExtension OPTIONAL Reason for change: SmsExtension is a CHOICE-structure which is implicitly tagged using already tags 1 and 2. SmsExtension := CHOICE single 1 IMPLICIT Extension SmsExtSet , multiple
10、2 IMPLICIT SEQUENCE OF Extension SmsExtSet Thus the context-specific tag 2 is used twice for optional elements. That introduces ambiguity for the types “ProtocolIdentifier“ and “SEQUENCE OF Extension“. The correction makes all types distinguishable. Insert tags to remove ambiguity for the BOOLEANs.
11、NAME and PartyNumber use partly the same tags, due to Name OPTIONAL elements are not distinguishable prior to decoding of element status. Original SmsStatusReportArg := SEQUENCE messageReference MessageReference, serviceCentreTimeStamp ServiceCentreTimeStamp, dischargeTime DischargeTime, recipientAd
12、dress PartyNumber, recipientName Name OPTIONAL, destinationAddress PartyNumber, staus Staus, priority BOOLEAN DEFAULT FALSE, moreMessagesToSend BOOLEAN DEFAULT FALSE, statusReportQualifier BOOLEAN DEFAULT FALSE, protocolIdentifier ProtocolIdentifier OPTIONAL, userData UserData OPTIONAL, smsExtension
13、 SmsExtension OPTIONAL Corrected SmsStatusReportArg := SEQUENCE messageReference MessageReference, serviceCentreTimeStamp ServiceCentreTimeStamp, dischargeTime DischargeTime, recipientAddress PartyNumber, recipientName 10 Name OPTIONAL, destinationAddress PartyNumber, staus Staus, priority 11 IMPLIC
14、IT BOOLEAN DEFAULT FALSE, moreMessagesToSend 12 IMPLICIT BOOLEAN DEFAULT FALSE, statusReportQualifier 13 IMPLICIT BOOLEAN DEFAULT FALSE, protocolIdentifier ProtocolIdentifier OPTIONAL, userData UserData OPTIONAL, smsExtension SmsExtension OPTIONAL Reason for change: PartyNumber and Name are both imp
15、licitly tagged CHOICE-structures as shown in the table below. It shows that the context-specific tags 0, 1 and 3 are used in both structures. Thus, if correspondingly tagged data is received at the decoder, it is not clear which of these elements is received prior to receipt of either a second conte
16、xt-specific tagged element, which then indicates “PartyNumber“, or the tag for element “Status“. Although no ambiguity is introduced, explicit tagging of the optional Name element helps in decoding of the received data. The three optional BOOLEAN elements need implicit tagging. If only one or two of
17、 them were received by the decoder, it is not clear which of the three elements is received. PartyNumber := CHOICE unknownPartyNumber 0 IMPLICIT NumberDigits, publicPartyNumber 1 IMPLICIT PublicPartyNumber, dataPartyNumber 3 IMPLICIT NumberDigits, telexPartyNumber 4 IMPLICIT NumberDigits, privatePar
18、tyNumber 5 IMPLICIT PrivatePartyNumber, nationalStandardPartyNumber 8 IMPLICIT NumberDigits Name := CHOICE namePresentationAllowed NamePresentationAllowed, namePresentationrestricted NamePresentationRestricted, nameNotAvailable NameNotAvailable NamePresentationAllowed := CHOICE namePresentationAllow
19、edSimple 0 IMPLICIT NameData, namePresentationAllowedExtended 1 IMPLICIT NameSet NamePresentationRestricted := CHOICE namePresentationRestrictedSimple 2 IMPLICIT NameData, namePresentationRestrictedExtended 3 IMPLICIT NameSet, namePresentationRestrictedNull 7 IMPLICIT NULL Insert tags to remove ambi
20、guity (optional elements indistinguishable). Original SmSubmitParameter := SEQUENCE protocolIdentifier ProtocolIdentifier, validityPeriod ValidityPeriod OPTIONAL, statusReportRequest BOOLEAN DEFAULT FALSE, replyPath BOOLEAN DEFAULT FALSE, rejectDuplicates BOOLEAN DEFAULT FALSE Corrected SmSubmitPara
21、meter := SEQUENCE protocolIdentifier ProtocolIdentifier, validityPeriod ValidityPeriod OPTIONAL, statusReportRequest 11 IMPLICIT BOOLEAN DEFAULT FALSE, replyPath 12 IMPLICIT BOOLEAN DEFAULT FALSE, rejectDuplicates 13 IMPLICIT BOOLEAN DEFAULT FALSE Reason for change: see above. Insert tags to remove
22、ambiguity (optional elements indistinguishable). Original SmDeliverParameter := SEQUENCE protocolIdentifier ProtocolIdentifier, serviceCentreTimeStamp ServiceCentreTimeStamp, priority BOOLEAN DEFAULT FALSE, moreMessagesToSend BOOLEAN DEFAULT FALSE, statusReportIndication BOOLEAN DEFAULT FALSE, reply
23、Path BOOLEAN DEFAULT FALSE Corrected SmDeliverParameter := SEQUENCE protocolIdentifier ProtocolIdentifier, serviceCentreTimeStamp ServiceCentreTimeStamp, priority 11 IMPLICIT BOOLEAN DEFAULT FALSE, moreMessagesToSend 12 IMPLICIT BOOLEAN DEFAULT FALSE, statusReportIndication 13 IMPLICIT BOOLEAN DEFAU
24、LT FALSE, replyPath 14 IMPLICIT BOOLEAN DEFAULT FALSE Reason for change: see above. Insert tags to remove ambiguity. Original SmsDeliverResChoice := CHOICE nul NUL, protocolIdentifier ProtocolIdentifier, userData UserData, resChoiceSeq ResChoiceSeq ResChoiceSeq := SEQUENCE protocolIdentifier Protoco
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