Tiêu chuẩn iso 08571 4 1988 amd2 1993 scan

INTERNATIONAL STANDARD ISO 8571-4 First edition 1988-10-01 AMENDMENT2 1993-08-15 Information processing systems- Open Systems Interconnection- File Transfer, Access and Management - Part 4: File Protocol Specification AMENDMENT : Overlapped access ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Systemes de traitement de /'information - lnterconnexion de syst8mes ouverts- Transfert, acces et gestion de fichiers- Partie : Specification du protocole de fichiers AMENDEMENT 2: Chevauchement d'acces Reference number ISO 8571-4:1988/Amd.2:1993 lEI Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 8571.4:1988/Amd.2:1993 (E) Foreword IS0 (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization National bodies that are members of IS0 or IEC participate in the of International Standards through technical committees development established by the respective organization to deal with particular fields of technical activity IS0 and IEC technical committees collaborate in fields of mutual interest Other international organizations, governmental and nongovernmental, in liaison with IS0 and IEC, also take part in the work In the field of information technology, IS0 and IEC have established a joint technical committee, ISO/IEC JTC Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote Amendment to International Standard IS0 8571-4:1988 was prepared Technical Committee lSO/IEC JTC 1, information technology IS0 8571 consists of the following processing systems - Open Systems Management: - Part : General introduction - Part : Virtual Filestore Definition - Part : File Service Definition - Part : File Protocol Specification - Part : Protocol Implementation by Joint parts, under the general title information Interconnection - File Transfer, Access and Conformance Statement Proforma lSO/IEC 1993 ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - All rights reserved No part of this publication may be reproduced or utilized in any form or by and microfilm, without any means, electronic or mechanical, including photocopying permission in writing from the publisher lSO/IEC Copyright Office l Case postale 56 l CH-1211 Gen&ve 20 l Switzerland Pri nted in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 857%4:1988/Amd.2:1993 Information processing systems - Open Systems Transfer, Access and Management - Interconnection (E) - File Part 4: File Protocol Specification AMENDMENT : Overlapped access other BDT actions, subject to restrictions; this is called conseclJtiv8 access secondly, read and write actions can be perfomed in parallel, so that both directions of data transfer are exploited at any one time Requests are then taken from the queue whenever either direction of transfer becomes free This is called concurrent access Introduction Ciause provides an introduction to this amendment The text in this clause iS not intended for inclusdon in IS0 $571 part The transfer of a single FADU, specified in a single F-READ request has the same interpretation as in Iso 8571 The resultant effect on the virtual filestore of a set of overlapped requests using consecutive access shall be the same as that of the equivalent set of requests issued in series; the service provided is serializable If concurrent access is used then the resultant effect of a set of write actions on the virtual filestore, is also serializable However, due to the non-determinism introduced by the use of concurrent access, lt is also possible that in some uses of the service, the data transferred as a resutt of a read action is not consistent with the current state of the file 0.1 General IS0 8571 part provides specifications of the protocols that support the internal and external file service interfaces This amendment extends these protocol specifications to provide support for the services offered by overlapped access 0.2 Rationale The objective in introducing overlapped access is to allow more efficient access to structured files when a single initiator has a need to perform many reading and updating operations; the serial nature of the current FTAM data transfer services introduces a significant control overhead if the FADUs are small In this context, an FADU is small if its transmission time is comparable with the time to complete a confirmed service on the association (the association’s round trip delay) scope This amendment makes no adMions The current design envelope that there should be at most one file selection per association and one file open per file selection is maintained If access to more than one file is to be overlapped, more than one association is necessary, The overlapped access takes place within a constant set of presentation contexts established as at present when the file is opened, or previously References Two different degrees of overlap have been identified Firstly, requests for future accesses may be issued whilst a previously requested BDT action is in progress, allowing the creation of a queue of read and write requests In general, PCI relating to a given BDT action may be overlapped with This anwdnent This amendment Definitions makes no additions to clause to clause and abbreviations makes no additions ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS to clause I Field of application This amendment 0.3 Summary makes no additjons Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT to clause IS0 857%4:1988/Amd.2:1993 (E) Section one: General Overview of the protocol 516 Protocol 52 Services assumed by the basic file protocol functional units Add to end of list Amend table k) consecutive amess functional unit I) concurrent access functional unit TAM unctional Unit Session Functional Unit Kernel Duplex Optionally: Resynch( 1) Minor synch(2) Presentation Functional Unit Kernel Minor Synch Svmmetric Synchronize (5) Minor Synch Resynchronize Symmetric Synchronize (5) J Duplex Optionally: Resynch( 1) Minor synch(2) Context Management(3) Minor Synch Svmmetrii Svnchronize (54 Minor Synch Resynchronize Symmetric Synchronize (5; NOTES The Symmetric Synctuonize functiod unit is used when overlapped acc0ss is in use Pending the specification of presentation symmetric synchronisation services, recovery mechanisms will not be available for use during ovdapped access Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 857%4:1988/Amd.2:1993 (E) Section two: Basic file protocol State of the association 62 Additional 62.3 state information Next state Replace second provided indicator 6.2.6 Transfer number In overlapped xcess, the transfer number identifies the bulk data transfer within a sequence of transfers from one data transfer idle stat0 to a n8xt data transfer idle stat8 within an open regime tt is set to zero at each data tmskr idle state sentence The defined values are the state names “initialised”, “selected”, “normal data transfer idle”, “consecutive data transfer idle”, “concurrent data transfer idle”, and “unset” In concurrent overlapped access, two transfer numbers are maintained - one for reads and one for writes File protocol data units 6.2.5 This amendment Add as last makes no ack%tions to clause paragraph: In overlapped access, the bulk transfer number identifies the bulk data transfer that can be cancelled, restarted or recovered Thus, the bulk transfer number is incremented only when there is an outstanding data transfer request and the previous data transfer cannot be cancelled, restarted or recovered If an initiator and a responder have different bulk transfer numbers then it is the bulk data transfer associated with the smaller of the two numbers that is cancelled, restarted or recovered File initiating entity actions File responding entity actions 10 File general actions This amendment makes no additions ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT to ckws0 10 IS0 857%4:1988/Amd.2:1993 (E) Section three: The basic bulk data transfer protocol bulk data transfer, and by error recovery mechanisms The value is incremented when a checkpoint is made The value is an integer in the range to 999998 Initially, the value is determined by the state of the association 11 State of bulk data transfer activity #b-label slJklalJse 11.2 11.2 Additional state of the entities (without overlapped access) first paragraph 11.3A First next synchronisation The following sub-clauses define the items of stat8 information associated with the basic protocol entities for th8 purposes of bulk data transfer without overlapped access Add the following The first next synchronisation point number reflects the s8quenc8 of events In th8 supporting synchronisation s8rvic8s for a sender The number is the se&l number of the next session synchronisation point to be issued by the session service provider The value is an integer in the range to 999998 Initially on a newly created session connection, the value is sub-clauses 11.3 Additional state of the entities (with consecutive access) The first next synchronisation point number applies only to WAM regimes for which th8 us8 of the presentation symmetric synchronisation functional unit has been successfully negotiated The foliowing sub-clauses define the items of state information associated with the basic protocol entities for th8 purposes of bulk data transfer with consecutive access 11.3.5 Second next synchronisation number 11.3.1 Current Transfer Number The current transfer number indicates the transfer number of the bulk data transfer procedure that is currently considered “in progress” The start bulk transfer number indicates the bulk transfer number of the first In a sequence of overlapped data transfers The start bulk transfer number is used to calculate the bulk transfer number and transfer number for cancel, recover and restart identifier point The second next synchronisation point number refleds the s8quenc8 of events in the supporting synchronisation services for a receiver The number is the serial number of the next session synchronisation point to be issued by the session service provider The value is an integer in the rang8 to 999998 Initially on a newly created session connection, the value is 11.3.2 Start Bulk Transfer Number 11.3.3 Checkpoint point number The second next synchronisation point number applies only to FOAM regimes for which the us8 of the presentation symmetric synchronisation functional unit has been successfully negotiated expected The checkpoint identifier expected reflects th8 sequence of checkpoints within bulk data, and is reset by the start of the Table - Protocol Data Units Functional by units Name Carried F-CHECK rquest (see note 2) F-CHECK response (see note 2) P-SYNC-MINOR request recovery, r8start P-SYNC-MINOR recOV8ry, restart response NOTES The data value corresponds to an F-DATA request service primitiw There is no F-DATA request PDU as S&L If overlapped acc8ssis not in usethen the F-CHECKrequestand response p&nitives are mapped &ectJy onto the P-SYNC-MINOR rquest and rwponse primitiv8&with no aciditionalsyntax Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Replace The ch8ckpoint identifier expected mi8s only to FOAM regimes for which the us8 of the restart and/or recovery functional units have been s ucc8ssfuJly negotiated IS0 8571.4:1988/Amd.2:1993 11.3.6 Synchronisation offset The synchronisation offset is a constant established when a read or wriie bulk data transfer is initiated or recovered, which gives the difference between the checkpoint identifier exp8cW and the next resynchmnisation point number The synchronisation offset applies only to FTAM regimes for which use of the presentation symmetric synchronisation functional unit has been successfully negotiated NOTE - Except during the issue of a &e&point, or performance of the restart procedure the value of the synchronisation offset is equal to the difference between the expected &e&point number and the next syrstwonisation pointnumber 11.3.7 Outstanding Checkpoint counter The outstanding checkpoint counter records the number of checkpoints which are unacknowledged 11.3.8 Read/Write indicator The read/write Indicator records whether the current bulk data transfer is to or from the initiator The value is set upon the beginning of the data transfer regime The defined values are “reading”, “writing” and “unset” The initial value Is unset 11.3.9 Discard Indicator The discard indicator is us8d to signal that data received during cancellation or before recovery ls invalid and should be thrown away tf the recovery or restart functional units are selected and presentation resynchronisation functional unit has been s ucc8ssfuily negotiated, it is used in conjunction with session resynchronisation to producs a recovery without us8r visibility of the error; otherwise it is us8d during the cancel phase The defined values are “unset” and “set” Initially, th8 value is “unset” 11.3.10 Transfer Request Queue The transfer request queue records the transfer number and transfer type (read or write) of all outstanding data transfers 11.3.11 Transfer End Queue The transfer end queue records the transfer numbers of all data transfers, already recorded on th8 transfer request queue, for which a transfer end PDU request or response has been issued 11.3.12 Data End Queue The data 8nd queue records th8 transfer numbers of all data transfers, already recorded on th8 data request queue, for which a data end PDU has been issued or received 11.3.13 Read and write checkpoint The read and write &e&point tab&s (two separate tabbs are kept) n%ord checkpointing information for each ongoing bulk data transf8f The following infofmatkm is kept for each currently active bulk data transfer: transfer number, checkpoint expected, bulk transfer number, synchronisatbn offset, and &e&point counter The size of th8 table is that of the transfer window negotiated When the fib is opened 11,3.14 Last trm end confirm hdimm The last transfer end confirm indicator records the last transfer end received by the initiator The bst transfer end confirm received is sent to the responder on a transfer end request PDU It is also included on cancel, recover and restart PDlJs The responder uses the Information in removing items from the transfer end response queue and in th8 re-issuing of transfer-end response after a session resynchronisation in the diredion of responder to initiator 11.3.15 bst transfef end indkation indicator The last transfer end indication indicator records the last transfer 8nd indication received by the responder tt iS inch&d on cancel, recover and restart PDUs The initiator us8s the information in the r8-issuing of transfer 8nd requests after a session resynchronisation in the direction of initiator to responder 11.4 Additional state of the entities (with concurrent acc0ss) The following sub-clauses define the items of state information associated with the basic protocol entities for the purpos8s of bulk data transfer with concurrent acmss 11.4.1 Current Read Transfer Number and Current Write Transfer Number The current transfer read number and the current transfer writ8 number indicate the transfer numbers of the read and write data transfer procedures that are in progress 11.42 Stem Bulk Transfer Number The start bulk transfer number indicates the bulk transfer number of th8 first in a sequence of overlapp8d data transfers The start bulk transfer number Is used to calculate the bulk transfer number and transfer number for cancel, recover, and restart llA3 checkpoint identifier expected The ch8ckpoint identifier 8xp8ct8d refeeds the sequence of checkpoints within bulk data, and is reset by the start of the bulk data transfer, and by error recovery mechanisms The value is incremented when a checkpoint is made The value tables ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS (E) Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT (E) ls an Integer In the range to 999998 Initially, the value is determined by the state of the association checkpoints which are unacknowledged llA.8 The checkpoint identifier exp8ctgd applies only to FTAM regimes for which the use of the restart and/or recovery functional units have been s uccessfuliy negotiated 11AA First next synchronisation point number The first next synchronisation point number reflects the s8quence of events in the supporting synchronisation services for a sender The number is the serial number of the next session synchronisation point to be issued by the session service provider The value is an integer in the range to 999998 Initially on a newly created session connection, the value is The first next synchronisation point number applies only to FTAM regimes for which the us8 of th8 presentation symmetric synchronisation functional unit has been successfully negotiated 11.4.5 Second next synchronisation number point The second next synchronisation point number reflects the sequence of events in the supporting synchronisation services for a receiver The number is the serial number of th8 next session synchronisation point to be issued by the session service provider The value is an integer in the range to 999998 Initially on a newly created session connection, the value is The second next synchronisation point number applies only to RAM regimes for which the us8 of the presentation symmetric synchronisation functional unit has been successfully negotiated 11.4.6 Synchronisation The synchronisation offset applies only to FTAM regimes for which use of the presentation symmetric synchronisation functional unit has been succxssfully negotiated NOTE - Except during the issue of a checkpoint, or performance of the restart procedure the value of the synchronisation offset is equal to the difference between the expected &e&point number and the next syrd-mnisatjon point number Outstanding Checkpoint The read indicator and the write indicator record whether or not there aI’ r8ad Or Writ8 data transfers in progress The defined WiU8S ar8 “r8&i~‘?-WIiti~” and “UnS& Th8 initial value is unset llA.9 Discard indicator The discard indicator is used to signal that data received during Canceilation or before r8covery is invtiid and shoukj be thrown away tf the recovery or restart fUndiod Units are s8l8cted and presentation resynchronisation functional unit has been s ucc8ssfuiiy negotiated, it is us8d in conjunction with session resynchronisation to produc8 a recovery without us8r visibility of the error; otherwise it is used during the cancel phase The defined values are “uns8t” and %8tH initially, the value is “unset” llA.10 Transfer Read Request Queue d Transfer Write Request Queue The transfer read request queue and the transfer writ8 request queue record th8 transfer numbers of all outstanding read and write data transfers llA.11 Transfer End Read Queue and Transfer End Write Queue The transfer end read queue and the transfer 8nd Writ8 qU8U8 record the tfansf8r numbers of all read and Writ8 data transfers, already recorded on th8 transfer request read (wriie) queue, for which a transfer end PDU requ8st or response has been issued 11.4.12 Data End Read clueue and Data End Write Queue offset The synchronisation offset is a constant established when a read or write bulk data transfer is initiated or recovered, which gives the difference between the checkpoint identifier expected and the next resynchronisation point number 1lA.7 Read Indicator and Write hdicator counter The data end read queue and the data end writ8 queue record th8 transfer numbers of all read and write data transfers, all ready recorded on the transfer request read (wriie) queue, for which a data end PDU has been issued/ received llA.13 Read and write checkpoint tables The read and write checkpoint tables (two separate tables are kept) record checkpointing information for 8ach ongoing bulk data transfer The following information is kept for each currently active bulk data transfer transfer number, bulk expected, transfer number, checkpoint synchronisation offset, and checkpoint counter The size of the table is that of the transfer window negotiated when the file is opened The outstanding checkpoint counter records th8 number of llA.14 Last transfer end confirm indicator The last transfer end confirm indicator recOrdS the ht Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - IS0 857%4:1988/Amd.2:1993 IS0 857%4:1988/Amd.2:1993 11.4.15 Last transfer end indication protocol 14 Bulk data transfer responding actions entity 15 Bulk data transfer sending entity actions 16 Bulk data transfer actions receiving entity 17 Bulk data transfer general actions data Amend table Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS entity indicator The last transfer end indication indicator r8cords the last transfer end read (write) indication received by the responder It is included on cancel, recover and restart PDUs The initiator uses the information in the re-issuing of transfer end requests after a session resynchronisation in the direction of initiator to responder 12 Bulk data transfer units 13 Bulk data transfer initiating actions Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - transfer end read (write) received by the initiator The last transfer end confirm received is sent to the responder on a transfer end request PDU tt is also included on cancel, recover and restart PDUs The responder uses the information in removing items from the transfer end response queue and in the re-issuing of transfer-end response after a session resynchronisation in the direction of responder to initiator (E) IS0 8571.4:1988/Amd.2:1993 (E) Section four: The error recovery protocol 1em Protocol mechanisms 19 Specification protocol of the error control ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 8571-4:1988/Amd.2:1993 (E) A.5.9.5.3 Concurrent write access Responder w r TATE R E S T A R T P D EVENT L-ERRORl F I-RESCF-W I-RESIN-W I-DATIN I-CHKCF I-DAEIN I-TREIN-W 13 I-CANIN-W 15 16 I-CANRP-W 15 16 I-CANIN-W 15 16 F-CANRP 15 16 A.5.9.5.4 Detailed entries - concurrent wriie access (class errors) ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - 1: P44O&PlOl&P30 : P440&(-Pl Ol I-P30) : I-RESRQ-W[520][533],L-HOLD L-ERROR20R,L-ERROR20W =>W-RESTART-PD =>W-XFER 2: P440&P30 : [503], WI =>W-RESTART 3: P44O&P30 : I-RESRP[521][533],L-HOLD,[529] =>W-RESTART 4: P44O&P26 : P440&-P26 : F-DATIN,L-UNHOLD =>samestate =>W-XFER 6: P440 : WI =>samestate 7: P44O&P24 : mP106 : P106&-P441 : P106&P441 &-P104 : P106&P441 &P104 : I-CHKRP[543],[503], [508],F-DAEIN 13:P441 : -P441: L-UNHOLD 15: P44O&P30: -P442: P442: Wlf 16:P440: Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS =>W-XFER =>samestate =>W-XFER =>samestate L-UNHOLD =>W-XFER =>sarnestate WI F-CANIN,L-UNHOLD F-CANCF,[215],[63],[509],1-CANRP-W[533], [516],L-UNHOLD =>samestate [215],[63],[509],1-CANRP-W[533],[516] =>W-XFER-IDLE =>W-XFER-IDLE Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT SO 8571.4:1988/Amd.2:1993 (0 A.510 Initiating entity state tables - FERPU - (Clam Ii and Ill errors) R&be1 A5 14: A5.10.1 Norma0 access (non-overlapped) - Initiator Relabel A5.15: A5.10.2 Detailed entries - normal access (class II and III errors) A&i the following sub-clausess STATE Q - EVENT x F E R R E S T A R T P D R E S T A R T L-ERROR2 1 I-CANIN 2 Q Q Q - E L - D E S L E c T - R E C V E R - I N I T - P D P D P D P D C A N C S E s I v E L P D I-CLOCF I-DESCF I-RECCF I-PABIN P A s I-CANCF L-ERROR3 Q - 7 7 7 7 12 12 12 12 12 12 12 12 12 I-SELCF 10 I-OPNCF I-INICF A.5.10.3 Consecutive access - Initiator A.5.10.4 Detailed entries - consecutive access (class II and Ill errors) 1: P400&-Pl Ol : P400&P101 &P30: P4OO&PlOl &P29: L-ERROR3 L-SUSPND, KANRQ[207][433], I-CANRQ[207][432],L=HOLD =SWBState L-HOLD =>Q-CANCEL-PD =>Q-CANCEL-PD 85 ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 857%4:1988/Amd.2:1993 (E) 2: P103&P29&P400: P103&P30&P400: I-CANRP[432], I-CLORQ L-SUSPND, I-CANRP[433], I-CLORQ =>CLOSE-PD =>CLOSE-PD 3: I-CLORQ =>CLOSE-PD 4: I-DESRQ =>DESELECT-PD 5: P400: I-RECRQ[520][532] aRECOVER-PD 6: P4OO&-P23&wP33&P34: [55],F-CLOCF[21 l],L-ERRABT P400&-P23&P33&-P34: L-HOLD, I-SELRQ P400&-P23&101 &-(P341P33)-&(P301P29): I-RECRQ[520][532] P4OO&wP23&-Pl Ol &-(P341P33)&(P301P29): [55],L-ERRABT P4OO&P23: [~3],[529],[2091, P443: I-REARQ -P443: [522],i-WRTRQ,L-RESEND[523] =>Q-PASSIVE =>SEL-PD =>samestate =>Q-PASSIVE =>Q-RESTART =>Q-RESTART 7: P4OO&P30: P4OO&Pl OO&PlOl : P400&-Pl 00&P101: P4oo&~Plol: L-SUSPND, L-HOLD,L-PABORT,[200],i-INIRQ L-HOLD,L-PABORTJ-INIRQ [55],L-ERRABT 8: P23: -P23&P102: -P23&-P102: I-RECRQ[520][532] [200],MNiRQ [55],L-ERRABT aRECOVER-PD 9: P23: -P23: I-OPNRQ [55],L-ERRABT =>OPN-PD =>Q-PASSIVE 10: P23: -P23: L-UNHOLD [55],L=ERRABT =>Q-XFER-IDLE =>Q-PASSIVE ll?Plol: PlOl: [55],L-ERRABT L-HOLD,I-CLORQ[21 l] =>Q-PASSIVE aCLOSE-PD 12: P4OO&P30: P4OO&P103&Pl OO&PlOl : P4OO&P103&wPl OO&PlOl: P400&(-P103(-PlOl): L-SUSPND, L+tOLD,[200], I-INIRQ L-HOLD,I-INIRQ [55],F-PABIN =>INIT-PD =>INIT-PD =>Q-PASSIVE =>iN IT-PD =>iN IT-PD =>Q-PASSIVE =>samestate =>Q-PASSIVE NOTES To avoid recovery procedures that never terminate the action in entry by the condition PlOl or -PlOl the local system to determine the number of times a recovery from any one error will be attempted effectively allowing The condition PlOl in entries 12 and includes the test when FQ0S is zero but the FERPM is not null The condition -P103 in entry implies that this event is not relevant to the FERPM and that normal actions take over The predicates which model the activity state indicator are mutually exclusive, so that combinations of them cannot occur These combinations are not included in the state table entries ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 8571.4:1988/Amd.2:1993 A.5.10.5 Concurrent access - Initiator R R E R C S - A X F ‘I’ A R T e R E S T A ZVENT E R P D R T I-CANIN-R 2 STATE R - R R W T L E V E R E C S C C N C E L - L S E - L E C T - V E R v I N I T - S E L - P N - P D P D P D P D P D P D P D I-CLOCF ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - I-DESCF 22 I -RECCF I-PAE3IN R P A S S I’ R E I-CANCF-R L-ERROR3 E V E R m R X F E R I D D E 22 22 7 7 7 7 22 7 12 12 12 12 12 12 12 12 12 22 12 12 23 24 I-SELCF I-OPNCF 10 I-INICF L-RECVR L-ERROR2-R 16 16 16 L-PASIVE 20 20 20 11 20 20 20 L A.5.10.5.1 Concurrent read access - Initiator A.5.10.5.2 Detaiied entries - concurrent access (class ii and iii errors) - read 2: P44O&P103&P29: P435: -P435&P30: -P435&-P30: 3: I-CANRP-R[432],[546], WI I-CLORQ I-CLORQ,L-RECVR Pw WI =>R-RECOVER-VVT =>CLOSE-PD =>CLOSE-PD I-CLORQ =>R-RECOVER-W-T=>CLOSE-PD 4: I-DESRQ =>DESELECT-PD 5: P440: I-RECRQ[539][532],[546] =>RECOVER-PD P435: -P435: Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT (E) (E) [538],[209],I-REARQ,L-RECVR 6: P44O&P23&P29&P445: L-RECVR P44O&P23&-P29&P445: P44O&-P23&-P33&P34&P445: [55],F-CLOCF[21 l],L-ERRABT,L-PASIVE L-HOLD, I-SELRQ P440&-P23&P33&-P34: P440&-P23&PlOl &-(P341P33)&(P30lP29): bRECRQ[539][532] P440&-P23&wPlOl &-(P341P33)&(P30lP29)&P445: [55],L-ERRABT,L-PASIVE =>R-RESTART =>R-XFER-IDLE =>R-PASSIVE =>SEL-PD =>samestate =>R-PASSI’ VE 7: P44O&Pl OO&PlOl : P44O&wPl OO&PlOl : P44O&wPlOl: L-HOLD,L-PABORT,[200],l-INIRQ L-HOLD,L-PABORTJINIRQ [55],L-ERRABT,L-PASIVE =>IN IT-PD =>INIT-PD =>R-PASSI VE P23: mP23&P102: -P23&wP102&P445: bRECRQ[539][532] [200],1-INIRQ [55],L-ERRAB,L-PASIVE =>RECOVER-PD =>samestate =>R-PASSIVE 9: P23: -P23&P445: I-OPNRQ [55],L=ERRABT, L-PASIVE =>OPN-PD =>R-PASSIVE 10: P23: -P23&P445: L-UNHOLD,L-RECVR [55],L-ERRABT, L-PASIVE =>R-XFER-IDLE =>R-PASSIVE 11: P447&wPlOl: P447&PlOl: [55],L-ERRABT L+tOLD,kCLORQ[21 WI =>R-PASSIVE =>CLOSE-PD =>R-RECOVER-VVT 12: P44O&Pl OO&Pl 01 &P103: P440&-Pl OO&PlOl &P103: P440&(-Pl Ol I-P1 03): L-HOLD,[200],1-INIRQ L-HOLD,I-INIRQ [55],F-PABIN,L-PASIVE =>IN IT-PD =>INIT-PD =>R-PASSIVE 16: P4408cPlOl: l-CANRQ-R[207j[507j[532],L-HOLD,[546] L-ERROR3,[544] =>R-CANCEL-PD =>samestate =>samestate L-UNHOLD =>R-PASSIVE -P447&PlOl: P440&-Pl ON-P446: P440&-Pi01 &P446: 20: l] =>samestate 22; 23: P444&P29: P444&-P29: 24: [537],[538], I-REARQ K5371 =>R-RESTART =>R-XFER-IDLE =>R-RECOVER-WI- NOTES To avoid recovery procedures that never terminate the action in entry by the condition P 101 or -PI01 effectively allowing the local system to determine the number of times a recovery from any one error will be attempted The condition PI01 in entries 12 and includes the test when FQOS is zero but the FERPM is not null The condition -PI03 in entry implies that this event is not relevant to the FERPM and that normal actions take over The predicates which model the activity state indicator and wait indicator are mutually exclusive ,sothat combinations of them cannot occur These combinations are not in&&d in the state table entries 88 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - IS0 857%4:1988/Amd.2:1993 IS0 8571.4:1988/Amd.2:1993 (E) A.5.10.5.3 Concurrent write access - Initiator W W TATE VENT R E W C S A C TRNLLOI WAECOEVNSOVRA R S E S XTTLETRTLNRIS F A EPRPPPPPPPWLV R D T D D -CANIN-W 13 13 W R E C E w X F E W P D E S R E C C E I E P E - S - - - - - - D D D D D D T E E 13 -CANCF-W 14 -CLOCF -DESCF 22 -RECCF 22 22 -ERROR3 18 18 18 18 7 7 22 18 18 -PABIN 18 18 18 18 12 12 12 12 12 22 18 18 -SELCF -0PNCF 10 -1NICF -RECVR 22 15 -ERROR2-W 17 17 17 -PASIVE 19 19 19 25 21 19 19 19 A.5.10.5.4 Detailed entries - concurrent access (class II and Ill errors) - write ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - 4: I-DESRQ =>DESELECT-PD 5: P440: I-RECRQ[539][532],[548] =>RECOVER-PD 6: P44O&P23&-P3O&P444: L-RECVR P44O&P23&P3O&P444: [538],[522],[209],I-WRTRQ,L-RESEND[523],L=RECVR P44O&-P23&-P33&P34&P444: [55],F-CLOCF[21 l],L-ERRABT,L-PASIVE P440&-P23&P33&-P34: L-HOLD, I-SELRQ P440&-P23&PlOl&-(P34IP33)&(P3O~P29): bRECRQ[539][532] P440&-P23GPlOl a-(P34)P33)&(P30IP29)&P444: [55],L-ERRABT,L-PASIVE =>W-XFER-IDLE =>W-RESTART =>W-PASSIVE =>SEL-PD =>samestate =>W-PASSIVE 7: P44O&Pl OO&PlOl : P440&-Pl 00&P101: P440&-PlOl : L-HOLD,L=PABORT,[200], I-INIRQ L-HOLD,L-PABORT,I-INIRQ [55],L-ERRABT,L-PASSIVE =>INIT-PD =>INIT-PD =>W-PASSIVE P23: -P23&P102: -P23&-P102&P444: I-RECRQ[539],[532] [200], I-IN IRQ [55],L-ERRABT,L-PASIVE =>RECOVER-PD =rsamestate =>W-PASSIVE 9: P23: I-OPNRQ =>OPN-PD 89 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT -P23&P444: 10: P23: -P23&P444: 12: P44O&Pl 00&P101 &PI 03: PM&-PI 00&P101 &P103: P44O&(-PI 01 I-P1 03): 13: P44O&P103&P30: P435: wP435aP29: wP435&-P29: 14: (E) [55],L-ERRABT,L-PASIVE =>W-PASSIVE L-UNHOLD,L-RECVR [55],L-ERRABT,L-PASIVE =>W-XFER-IDLE =>W-PASSIVE L-HOLD, [200], I-IN IRQ L-HOLDJ-INIRQ [55],F-PABIN,L-PASIVE =>IN IT-PD =>IN IT-PD =>W-PASSIVE I-CANRP-W[433],[547],L-SUSPND, [5351 =>W-RECOVER-WT =>CLOSE-PD =>CLOSE-PD I-CLORQ I-CLORQL-RECVR [5471* WI I-CLORQ =>W-RECOVER-WI=>CLOSE-PD 15: P445&P30: P445&-P30: [537],[538],[522],1-WRTRQ,L-RESEND[523] WI =>W-RESTART =>W-XFER-IDLE 17: P44O&PlOl &P30: P44O&-Pl Ol &P30&-P446: P440&-Pl Ol &P3O&P446: L-SUSPNDJ-CANRQ-W[207][507j[532],L-HOLD,[547] L=ERROR3,[544] =>W-CANCEL-PD =>samestate =>sarnestate 18: L-SUSPND,L-HOLD,[550],[535] =>W-RECOVER-WT 19: L-UNHOLD =>W-PASSIVE 21: P447&-PlOl : P447&PlOl: -P447&PlOl: WI WI =>W-PASSIVE =>W-RECOVER-WT =>W-RECOVER-WT 22; WI =>samestate P435: wP435: =>W-RECOVER-WT 25: NOTES To avoid recovery procedures that never terminate the action in entry by the condition Pl 01 or -PlOl the local system to determine the number of times a recovery from any one error will be attempted effectively allowing The condition PlOl in entries 12 and includes the test when FQOS is zero but the FERPM is not null The condition -P103 in entry implies that this event is not relevant to the FERPM and that normal actions take over The predicates which model the activity state indicator and wait indicator are mutually exclusive, so that combinations of them cannot occur These combinations are not included in the state table entries 90 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - IS0 857%4:1988/Amd.2:1993 IS0 8571-4:1988/Amd.2:1993 AS.11 Responding f?&bel A5.16: k5.11.1 Normal entity xcess statu tabIe - FERPU (non-overlapped) (E) - (ciasm II and iii w) - l3lesponder Relatwl A5.17: A51 1.2 DetaiIed entries - normal access (class II and Ill errors) Add the following slrb-chuses A5.11.3 Consecutive access - Respmder Q R E S T :VENT Q Q R C A N C L D E S L Q Q P X F E R I P N E X E X ~ X F E R I D L E 14 16 7 17 17 17 I-WRTIN I-SELIN 10 I-OPNIN Detailed entries - consecutive access (class II and Ill errors) 1: P4OO&-Pl Ol : P4OO&PlOl &P30: P4OO&PlOl &P29: 2: P400&P103&P30: P4OO&P103&P29: L-ERROR3 I-CANRQ[207][435],L+iOLD I-SUSPND, I-CANRQ[207][436],L-HOLD =samestate =>Q-CANCEL-PO =>Q-CANCEL-PO I-CANRP[435] =>CLOSE-EX L-SUS?ND,I-CANRP[436] =&LOSE-EX 3: =>CLOSE-EX 4: I-CLORP =>DESELECT-EX 5: I-DESRP =>Q-PASSIVE ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - A.5.11.4 11 91 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 8571,4:1988/Amd.2:1993 (E) P4OO&PlOl &P39&-P33&(P30IP29): [209],I-RECRP[521][533],[503],[529] P4OO&PlOl &P39&P33&-P31 &-P32: I-RECRP[20 1] P4OO&PlOl &P39&-P33&-P31&-P32: I-RECRP[201] I-RECRPp5][201] P4OO&PlOl &-P39: I-RECRP[201] P400&-PlOl : =>Q-XFER-EX =>SEL-EX =>samestate =>sarmstate =>samestate 7: P4OO&P29: P4OO&PlOl: P400&-PlOl : L-SUSPND, L-HOLD,L-PABORT [55],L-ERRABT =>INIT-EX =>Q-PASSIVE 8: P102: -P102: I-IN IRP I-INIRP[201] =a-PASSIVE =>Q-PASSIVE 9: P4OO&P30&-P33&-P34: P400&-P3O(P33jP34: [55],L-ERRABT =>Q-RESTART =>Q-PASSIVE 10: L-SELRP =>OPN-EX 11: L-HOLDJ-OPNRP =>Q-XFER-IDLE 12: [55],L-ERRABT =>samestate 13: P4OO&P29&-P33&-P34: P4OO&-P29IP33lP34: L=RESEND[523] [55],L-ERRABT =>Q-RESTART =>Q-PASSIVE 14:PlOl&P400: -PlOl &P400: [21 O],L-HOLD [55],L-ERRABT =>safwstate =>samestate 16:P103 I-CLORP,L-HOLD =>DESELECT-EX 17: P400&P103&P101 &P29: P400&P103&P101 &P30: P400&(-P103pPlol): L-SUSPND,L-HOLD L-HOLD [55],F-PABIN =>INIT-EX =>lNIT-EX =>Q-PASSIVE NOTES The condition PlOl in entries and 17 includes tf~ test when FQOS is zero but the FERPM is not null over The condition -P! 03 in entries and 16 implies that this event is not relevant to the FERPM and that normal actions take The predicates which model the activity state indicator are mutually excbive, combinations are not included in the stats table entries so that combinations of them cannot occur These 92 ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 8571,4:1988/Amd.2:1993 (El A.5.11.5 Concurrent access - Responder A.5.11.5.1 Concurrent read acc8ss - R8spond8r R R R STATE EVENT I-CANIN-R R E S T A R T C A N C E L V P D P D W T R E C E E R I-CANCF-R 16 I-CLX>IN I-DESIN ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - L-ERROR3 I-PABIN 25 25 25 7 7 25 17 17 12 12 12 25 12 12 L-GIVEUP I-INIIN 26 I-RElAIN I-SELIN I-OPNIN 28 L-RECVR L-ERROR&R 18 18 18 L-PASIVE 23 23 23 A.5.11.5.2 Detailed entries - concurrent access (class II and Ill errors) - read 2: P44O&PlOl: P435: -P435&P29: -P435&-P29: 3: P435: -P435: I-SUSPND,I-CANRP-R[436],[546], W61 =>R-RECOVER-W =>CLOSE-EX =>CLOSE-EX L-RECVR WI, WI =>R-RECOVER-WT =>CLOSE-EX 4: I-CLORP =>DESELECT-EX 5: I-DESRP =>REC-EX 6: P44O&PlOl &P39&-P33&-P34: [209],I-RECRP[540][533],[538],[548] P44O&PlOl &P39&P33: I-RECRP[201],[548] P44O&PlOl &P39&-P33&P34:I-RECRP[201],[548] P44O&PlOl &-P39: I-RECRP[75][201],[548] P44O&PlOl: I-RECRP[201],[548] =>XFER-EX =>SEL-EX =>samestate =>samestate =>sarwstate 93 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 857%4:1988/Amd.2:1993 (El 7: P44O&PlOl: P440&-PI 01: L-SUSPND,L-HOLD,L-PABORT [55],L=ERRABT, L-PASIVE =>INIT-EX =>R-PASSIVE 8: P102: -P102: I-IN IRP I-INIRP[201],L=PASIVE =>REC-EX =>R-PASSIVE 10: L-SELRP =>opN-8X 11: I-OPNRP =>XFER-EX 12:P444: [55],L-ERRABT,L-PASIVE =>R-PASSIVE 13: P44O&P29&P445: P44O&P29&-P445: P440&-P29&P445: L=RESEND[524],L=RECVR L=RESEND[524] [55],L=ERRABT, L-PASIVE =>R-RESTART =>R-RESTART =>R-PASSIVE 14: P447&PlOl: P447&-PlOl : -P447&PlOl: [21 O],L-HOLD [55],L=ERRABT, L-PASIVE WI =>samestate =>R-PASSIVE =>R-RECOVER-WT 16: P103: I-CLORP,L-HOLD aDESELECT-EX 17: P440&P103&P101: P440&(-P1031-PlOl): L-SUSPND,L-HOLD [55],F-PABIN,L-PASIVE =>INIT-EX =>R-PASSIVE 18: P44O&PlOl: P440&-PI 01 &-P446: P440&-PI 01 &P446: L-SUSPND, I-CANRQ-R[20~[436],L+iOLD,[546] L=ERROR3,[544] =>R-CANCEL-PD =>sarmstate =>sarnestate 25: WI =>samestate 26: P44O&P29&P444: P440&-P29: L=RESEND[524],[537] [55],L=ERRABT,L=PASIVE =>R-RESTART =>R-PASSIVE 28: -P29: P29: WI =>R-XFER-IDLE =>samestate 29: =>R-RECOVER-WT NOTES The condition PlOl in entries and 17 includes the test when FQOS is zero but the FERPM is not null over The condition aP103 in entries and 16 implies that this event is not relevant to the FERPM and that normal actions take The predicates which model the activity state indicator and wait indicator are mutually exclusive, so that combinations of them cannot occur These combinations are not included in the state table entries 94 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT IS0 857%4:1988/Amd.2:1993 (El A.5.11.5.3 Concurrent write access - Responder w TATE ‘IVENT I- -CANIN-W 20 R E C R E C E V E R E X W T 20 21 I- -CANCF-W I- -CLOIN 24 I- -DESIN 25 25 I- -RECIN -ERROR3 I -PABIN 25 24 24 24 24 7 7 24 25 24 24 24 24 24 12 12 12 12 24 25 24 -GIVEUP 12 I -1NIIN 25 I -WRTIN 27 I -SELIN 10 I- -0PNIN 11 -RECVR 15 L*-ERROR2-W - 22 -PASIVE A.5.11.5.4 Detailed entries - concurrent access (class II and Ill errors) - write 4: I-CLORP =>DESELECT-EX 5: I-DESRP =>REC-EX &P39&-P33&-P34: I=RECRP[75][201],[548] I=RECRP[201], [548] =>XFER-EX =>SEL-EX =>samestate =>samestate =>samestate 7: P44O&PlOl: P440&-PlOl : L-HOLD,L-PABORT [55],L=ERRABT,L=PASIVE =>INIT-EX =>W-PASSIVE 8: P102: I-INIRP I-INIRP[201],L=PASIVE =>REC-EX =>W-PASSIVE L-RECVR =>W-RESTART [55],L=ERRABT,L=PASIVE =>W-RESTART =>W-PASSIVE [209],I=RECRP[540][533],[538],[548] P44O&PlOl &P39&P33: I=RECRP[201],[548] P44O&PlOl &P39&-P33&P34:I=RECRP[201],[548] P44O&PlOl &-P39: P440&-PI 01: wP102: 9: P44O&P3O&P444: P44O&P30&-P444: P440&-P3O&P444: Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - 6: P44O&PlOl 10: L-SELRP =>opN-ex 11: I-OPNRP =>XFER-EX 12: P445: [55],L-ERRABT,L-PASIVE =>W-PASSIVE 15: -P30: P30: WI =>W-XFER-IDLE =>satwstate 16: PI 03: I-CLORP,L-HOLD aDESELECT-EX 19: P44O&PlOl: P440&-PI 01 &-P446: P440&-PI 01 &P446: I-CANRQ-W[2071[435],L=HOLD,[547] L-ERROR3,[544] =>W-CANCEL-PD =>samestate =>samestate 20: P44O&P103&P30: P435: -P435&P29: -P435&-P29: I-CANRP-W[435],[547], WI L-RECVR =>W-RECOVER-WT =>CLOSE-EX =>CLOSE-EX 21: P435: -P435: =>W-RECOVER-W-t =>CLOSE-EX 22: L-UNHOLD =>W-PASSIVE 24: L-HOLD,[550],[535] =>W-RECOVER-WT 25: [=I =>samestate 27: P44O&P3O&P445: P440&-P30: WI [55],L-ERRABT, L-PASIVE =>W-RESTART =>W-PASSIVE WI WI =>W-PASSIVE =>W-RECOVER-WT =>W-RECOVER-WT 25: P447&+101: P447&PlOl: wP447&PlOl: 30: =>W-RECOVER-WT NOTES The condition PlOl in entries and 17 includes the test when FQOS is zero but the FERPM is not null over The condition -P103 in entries and 16 implies that this event is not relevant to the FERPM and that normal actions take The predicates which model the activity state indicator and wait indicator are mutually exclusive, so that combinations of them cannot occur These combinations are not included in the state table entries 96 Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - (E) IS0 8571-4:1988/Amd.2:1993 This page intentionally left blank ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT (E) ``,`,,,````,,,,,,``,`,```,`-`-`,,`,,`,`,,` - IS0 857%4:1988/Amd.2:1993 UDC 681.3 : 621.39 Descriptors: data processing, information interchange, network procedure, files, transfer, access, management, protocols interconnection, open systems interconnection, Price based on 96 pages Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Licensee=University of Alberta/5966844001, User=sharabiani, shahramfs Not for Resale, 03/17/2014 21:02:30 MDT communication