ISO/IEC 8885:1991/Amd 3:1992
(Amendment)Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — General purpose XID frame information field content and format — Amendment 3
Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — General purpose XID frame information field content and format — Amendment 3
Technologies de l'information — Télécommunications et échange d'informations entre systèmes — Procédures de commande de liaison de données à haut niveau (HDLC) — Format et contenu du champ d'information de la trame XID pour application générale — Amendement 3
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Second edition
1991 -06-01
AMENDMENT 3
1992-02-01
Information technology - Telecommunications
and information exchange between systems -
High-level data link control (HDLC) procedures -
General purpose XID frame information field
content and format
AMENDMENT 3 : Definition of a private parameter
data link layer subfield
Technologies de I'information - Télécommunications et échange d'information
entre systèmes - Procédures de commande de liaison de données à haut niveau
(HDLC) - Format et contenu du champ d'information de XID pour application
générale
3: Définition d'un sous-champ à paramètres privés de la couche
AMENDEMENT
liaison de données
Reference number
ISOiIEC 8885 : 1991iAmd.3 : 1992 (E)
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ISODEC 8885 : 19911Amd.3 : 1992 (E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the International
Electrotechnical Commission) form the specialized system for worldwide standardiz-
ation. National bodies that are members of IS0 or IEC participate in the development
of International Standards through technical committees 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 non-governmental, 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 1. 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 3 to International Standard ISOAEC 8885 : 1991 was prepared by Joint
Technical Committee ISOAEC JTC 1, Information technology.
O ISO/IEC 1992
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in writing from the publisher.
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Printed in Switzerland
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ISO/IEC 8885 : 1991/Amd.3 : 1992 (E)
Introduction
This Amendment to ISO/iEC 8885:1991 indicates additional changes that have
been agreed since the approval of ISOEC 8885.
a
iii
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ISODEC 8885 : 1991/Amd.3 : 1992 (E)
Information technology - Telecommunications and
information exchange between systems - High-level
data link control (HDLC) procedures - General
purpose XID frame information field content and
format
AMENDMENT 3 : Definition of a private parameter
data link layer subfield
ISO/IEC 4335, IS0 7478, ISO/IEC 7809, and IS0
1 scope
8471, defining respectively the fiame structwe,
This Amendment to ISO/IEC 88851991 adds
elements of procedures. multilink procedures. and
provisions far negotiation of private parameters, which
classes of procedures of HDK, and the address
include implementation-specific data link layer
resolution procedures for switched connections.
parameters supported by users, manufacturers, or
standards committees desiring to use single-Xiû-
3.6 HDLC-based protocol: A protocol which is
exchange negotiation procedures to unambiguously
a subset of the elements and classes of procedure
negotiate private parameters.
and optional functions defined in the basic HDLC
standards, and adopted as a standard by IS0 or a
recognized international standards body (e.g.
CCrrr).
2 Specific changes to ISODEC 8885
38 private parameter: An impiementation-
In 1 Scope insert the following after the second
a) specific data link layer prameter not defined in the
paragraph:
basic HDK standards.".
'This International Standard defines encoding for
In subclause 4.2 Data Unk layer subfieids, in the
information related to the basic HDLC standards
fourth paragraph, change the second sentence to
oniy. Mechanisms are provided to permit the
read:
general-purpose XID frame information field to be
"Four data link layer subfield identifiers are
used to negotiate private parameters in a single
defind
XID exchange simultaneously with negotiation of
the defined basic parameters.".
Address resolution,
In 2 Normative references, insert the following
b)
Parameter negotiation,
item after "IS0 2382/9: 1984--":
Multilink parameter negotiation, and
"ISO/IEK 33W.1991 Information technobgy -
...
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