Many ISO standards for free download

Some people complain that ISO standards are expensive … there are many ISO standards available for free download from ISO:

http://standards.iso.org/ittf/PubliclyAvailableStandards/index.html

… it may be quite late for widespread use of ISO/OSI standards …

Here are some direct links to standards related to IEC 61850, MMS, ASN.1, …

ISO/IEC 7498-1:1994
Information technology -- Open Systems Interconnection -- Basic Reference Model: The Basic Model

ISO/IEC 7498-3:1997
Information technology -- Open Systems Interconnection -- Basic Reference Model: Naming and addressing

ISO/IEC 7498-4:1989
Information processing systems -- Open Systems Interconnection -- Basic Reference Model -- Part 4: Management framework

ISO/IEC 8824-1:2008
Information technology -- Abstract Syntax Notation One (ASN.1): Specification of basic notation

ISO/IEC 8825-1:2008
Information technology -- ASN.1 encoding rules: Specification of Basic Encoding Rules (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER)

ISO/IEC 8825-4:2008
Information technology -- ASN.1 encoding rules: XML Encoding Rules (XER)

ISO/IEC 9834-1:2008
Information technology -- Open Systems Interconnection -- Procedures for the operation of OSI Registration Authorities: General procedures and top arcs of the International Object Identifier tree

… and many other standards.