SIST ETS 300 405/C1 E1:2003

• Abstract:

  Corrigendum to: - correct text in Subclause 7.3.

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 35.110 - Networking
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Ref Project: ETSI ETS 300 405/C1 ed.1 (1995-10) - Network Aspects (NA); Metropolitan Area Network (MAN); Interconnection of MAN Switching Systems (MSS) based on an Asynchronous Transfer Mode (ATM) interface

SIST ETS 300 405/C1 E1:2003 is the Slovenian version of ETSI Corrigendum ETS 300 405/C1 Edition 1. It corrects the European Telecommunication Standard for Network Aspects (NA), Metropolitan Area Network (MAN) interconnection of MAN Switching Systems (MSS) based on an Asynchronous Transfer Mode (ATM) interface, with the corrections focused on subclause 7.3.

What does SIST ETS 300 405/C1 E1:2003 specify?

SIST ETS 300 405/C1 E1:2003 specifies editorial corrections to the first edition of ETS 300 405. In practice, it updates the wording used for the MAN switching and address-handling functions so that implementations and interpretations follow the corrected text.

The document is organized as a foreword, an amendments section, and a history note. The amendments section gives the exact text changes for subclause 7.3, while the history note identifies the document as a corrigendum to the first edition.

What are the key requirements of SIST ETS 300 405/C1 E1:2003?

This corrigendum changes how subclause 7.3 describes the address-processing path in the MAN switching system. The practical effect is to align the terminology and message handling steps used between the MSS, CLNI, and the internal modules.

Corrected module name in subclause 7.3

In subclause 7.3, bullet (a), the term Routeing Module (RM) is replaced by CLNI. For users of the standard, this matters because drawings, interface descriptions, and implementation notes should use the corrected module name at that point in the text.

Clarified AMF structure

In subclause 7.3, bullet (b), item (1), the text describes the Address look-up Module (AM) as one of three main modules within the AMF block. This tells implementers where the address lookup function sits in the overall processing chain.

IMPDU handling from MSS to CLNI

The corrected text says the AM receives the Initial Media access control PDU (IMPDU) and examines the PI value. It then decides whether encapsulation has already occurred and whether group address resolution is needed. In practice, this means the module must inspect the incoming unit before deciding how to forward it.

Encapsulation and group address resolution

Where needed, the AM performs group address resolution and sets the encapsulation/non-encapsulation parameter using the interface type, the use of encapsulation procedures in the network domain, and management information. This matters because the standard is not just routing traffic - it also defines when encapsulation state is determined.

IMPDU handling from CLNI to MSS

When the AM receives an IMPDU from the Forwarding/Receiving Module (FRM), it checks the destination address and may discard the IMPDU if the address is unknown. If the IMPDU is valid, it performs group address resolution when needed and passes the IMPDU internally to the MSS. For implementers, this defines the filtering and forwarding decision at the incoming side of the interface.

What terms does SIST ETS 300 405/C1 E1:2003 define?

• MAN - Metropolitan Area Network, the network type covered by the standard.
• MSS - MAN Switching Systems, the systems being interconnected.
• ATM - Asynchronous Transfer Mode, the interface technology used between MSS.
• IMPDU - Initial Media access control PDU, the unit processed by the address look-up logic.
• PI - the value examined to determine whether encapsulation has already occurred.
• FRM - Forwarding/Receiving Module, the module that receives IMPDUs from CLNI.
• RM - Routeing Module, the module mentioned in the corrected forwarding path.
• CLNI - the interface point named in the corrected text between the MSS and the processing path.

Who uses SIST ETS 300 405/C1 E1:2003?

This corrigendum is used by telecom engineers, system architects, and implementers working on MAN interconnection over ATM. It is also relevant to test, documentation, and quality teams that need the corrected wording for interface behaviour and module naming. ETSI TC-NA work on network aspects is the technical context for the document.

What changed in SIST ETS 300 405/C1 E1:2003 from the previous edition?

SIST ETS 300 405/C1 E1:2003 is a corrigendum to the first edition of ETS 300 405. The stated changes are editorial corrections in subclause 7.3, including:

• replacing Routeing Module (RM) with CLNI in bullet (a)
• modifying the description of the AMF block in bullet (b), item (1)
• clarifying the behavior of the Address look-up Module (AM)
• refining how the module treats IMPDU, PI values, group address resolution, and encapsulation handling

Which standards are used with SIST ETS 300 405/C1 E1:2003?

• ETS 300 405 (1995) - the first edition that this corrigendum amends and corrects.

What does the SIST ETS 300 405/C1 E1:2003 document contain?

The document contains a short foreword, a detailed amendments section, and a history note. The amendments section gives page and subclause-level correction instructions for subclause 7.3, including terminology changes and revised processing text for IMPDU handling. The history note identifies the first edition and the corrigendum status, which helps users trace the corrected version used in implementation or review.

SLOVENSKI STANDARD
01-december-2003
2PUHåQLYLGLNL1$±9HOHPHVWQRRPUHåMH0$1±0HGVHERMQRSRYH]RYDQMH
NRPXWDFLMVNLKVLVWHPRYYRPUHåMX0$1006SUHNYPHVQLND]DDVLQKURQL
SUHQRVQLQDþLQ$70
Network Aspects (NA); Metropolitan Area Network (MAN); Interconnection of MAN
Switching Systems (MSS) based on an Asynchronous Transfer Mode (ATM) interface
Ta slovenski standard je istoveten z: ETS 300 405/C1 Edition 1
ICS:
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CORRIGENDUM ETS 300 405
October 1995
Source: ETSI TC-NA Reference: DE/NA-052104
ICS: 33.020
MAN, interconnection, ATM
Key words:
This corrigendum modifies
the European Telecommunication Standard ETS 300 405 (1995)
Network Aspects (NA);
Metropolitan Area Network (MAN)
Interconnection of MAN Switching Systems (MSS)
based on an Asynchronous Transfer Mode (ATM) interface
ETSI
European Telecommunications Standards Institute
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Office address:
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Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

Page 2
ETS 405: February 1995/Corrigendum: October 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

Page 3
ETS 405: February 1995/Corrigendum: October 1995
Foreword
This corrigendum provides some editorial correction
...