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NOTE — Address resolution procedures for situations where the remote DTE does not support XID frames, the iex address, or complete address support capabilities as defined in iso iec 13239 8 below are not within the scope of this International Standard. For the balanced class, the data link consists of 1339 combined stations and operates in the asynchronous balanced mode in a point-topoint configuration.
It is used to select a pair of operational link addresses when preassigned, system designated addresses are not known on an a priori basis; e. Mitigate liability and better understand compliance regulations Boost efficiency: In each class, a basic repertoire of commands and responses is defined, but iso iec 13239 capability of the data link may be modified by the use of optional functions.
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The mechanisms used to achieve bit pattern independence transparencywhere and when required, within the frame are also defined. Speed up research, capture and reuse expertise Iso iec 13239 additional product information, visit the IHS Standards Expert page.
For the unbalanced iso iec 13239 class, the data link consists of a control station plus one or more tributary stations and operates in the unbalanced connectionless-mode in a point-to-point or multipoint configuration.
The defined elements of procedures are to be considered as a common basis for establishing different types of data link control procedures.
iso iec 13239
Standard: ISO/IEC 13239
Not all of the commands or responses are required for any particular system implementation. Uec International Standard defines a single-exchange negotiation procedure for establishing operational characteristics iso iec 13239 either one or more stations are capable of providing multiple selections.
Balanced operation is intended for use in circumstances which require equal control at either end of the data link.
Operational requirements are covered in accordance with the overall HDLC architecture. This International Standard provides a means iso iec 13239 exchanging the necessary information to establish, at a minimum, a data link connection between two correspondents wishing to communicate.
The frame structure portion defines the relative positions of the various components of the basic frame format and the nonbasic frame format. These HDLC elements of procedures are defined specifically in terms of the actions that ixo on receipt of commands at a secondary station, a tributary station, a peer station, or a combined station. For the unbalanced classes, the data iso iec 13239 consists of a primary station plus one or more secondary stations and operates in either the normal response mode or the asynchronous response mode in a point-to-point or multipoint configuration.
Click here to skip or ad will close in 15 seconds. For the balanced connectionless class, the iso iec 13239 link consists of two peer iso iec 13239 and operates in the balanced connectionless-mode in a point-to-point configuration.
This International Standard does not define any single system and should not be regarded as a specification iecc a data communication iso iec 13239. Price and Buy this Standard View Pricing. IHS Standards Expert subscription, simplifies and expedites the process for finding and managing standards by giving you access to standards from over standards developing isoo SDOs.
This Standard References Showing 6 of 6. This ido is available for individual purchase. Iso iec 13239 addition, three frame checking sequences FCS are specified; the rules for address field extension are defined; and the addressing conventions available are described. Mechanisms are provided to permit the general purpose XID iso iec 13239 information field to be used to negotiate private parameters in a single XID exchange simultaneously with negotiation of the defined basic parameters.
It defines encoding for information related to the basic HDLC standards only.