ISO/IEC 8885:1993/Amd 9:1995

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 9: Extension of HDLC sequence number modulus beyond 128

This amendment increases the modulus number (i.e. the sequence number) in steps up to a maximum of 2 147 483 648 which can be represented in 31 bits. This is done by the introduction of a new "Set Mode" command that can be used to negotiate or indicate the modulus in the absence of or to override a default value. This uses an optional information filed in the "Set Mode" command.

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 9: Extension du module du numéro de séquence HDLC au-delà de 128

General Information

• Status: Withdrawn
• Publication Date: 15-Nov-1995
• Withdrawal Date: 15-Nov-1995
• ICS: 35.100.20 - Data link layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6/WG 1 - Physical and data link layers
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 22-Aug-2002

Relations

• Amends: ISO/IEC 8885:1993 - Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — General purpose XID frame information field content and format
• Effective Date: 06-Jun-2022
• Child: ISO/IEC 8885:1993 - Information technology — Telecommunications and information exchange between systems — High-level data link control (HDLC) procedures — General purpose XID frame information field content and format
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL
ISO/IEC
STANDARD
Third edition
1993-12-15
AMENDMENT 9
1995-I 1-15
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 9: Extension of HDLC sequence
number modulus beyond 128
Technologies de /‘information - Tbkommunications et kchange d’informations
entre systkmes - Procbdures de commande de liaison de don&es B haut niveau
(UDLC) - Format et contenu du champ d’information de la trame X/D pour
application g&Wale
AMENDEMENT 9: Extension du module du numkro de sbquence HDLC au-de&
de 728
Reference number
lSO/IEC 885:1993/Amd. 9:1995(E)

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iSO/lEC 8885:1993/Amd.9:1995(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 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, lSO/IEC JTC 1. Draft International Stan-
dards 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 9 to International Standard lSO/IEC 8885:1993 was
prepared by Joint Technical Committee lSO/IEC JTC 1, I~~forma~?on
technology, Subcommittee SC 6, Telecommunications and infor-
mation exchange between systems.
0 ISO/IEC 1995
All rights reserved. Unless otherwise specified, no part of this publication may be
reproduced or utilized in any form or by any means, electronic or mechanical,
including photocopying and microfilm, without permission ‘in writing from the
publisher
lSO/IEC Copyright Office l Case postale 56 l Cl-i-1211 Geneve 20 0 Switzerland
Printed in Switzerland
ii

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0 lSO/IEC lSO/IEC 8885:1993/Amd. 9:1995 (E)
Introduction
This amendment increases the modulus number (i.e. the sequence number) in steps up
to a maximum of 2 147 483 648 wh.ich can be represented in 31 bits. This is done by
the introduction of a ne
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