Accredited Standards Committee * X3, Information Technology
NEWS RELEASE
Doc. No.: PR/96-013
Reply to: Lynn Barra at lbarra@itic.nw.dc.us
X3 Announces the Public Comment Period for
X3.66:199x, Advanced Data Communication Control Procedures (ADCCP)
X3.66.1: General
X3.66.2: Frame Structure
X3.66.3: Elements of Procedures
X3.66.4: Classes of Procedures
X3.66.5: Data Link Address Resolution/Negotiation in Switched Environments
X3.66.6: General Purpose XID Frame Information Field Content and Format
Washington D.C., February 1996 - Accredited Standards Committee
X3, Information Technology is announcing the public comment period for
X3.66.1:1 through X3.66.6. The public review extends from March 15, 1996 to
May 14, 1996.
This multi-part standard specifies the suite of International Standards that
comprise Advanced Data Communication Control Procedures (ADCCP). Data
communication control procedures define the means for exchanging data over
communication circuits. The Advanced Data Communication Control procedures
(ADCCP) are bit oriented and code independent, and as such represent the state
of the art as far as data link control procedures are concerned. These individual
standards are the revision of ANSI X3.66:1979. As revisions are made to the
International Standards, the individual parts and the affected parts will be re-
issued. This will cause ADCCP and HDLC to track with one another.
X3.66.1 represents five International Standards that define high-level data link
control (HDLC) procedures, (with exception as noted), as the replacements for the
X3.66:1979 version.
X3.66.2 specifies the frame structure for data communication systems using the
bit-oriented high-level data link control (HDLC) procedures.
X3.66.3 specifies the procedures designed to permit synchronous or start/stop,
code independent data transmission. These elements of procedures are defined
specifically in terms of the actions that occur at a station on receipt of commands
X3.66.4 describes three unbalanced classes of procedures and two balanced
classes of procedures for synchronous or start/stop data transmission. The
procedures use the frame structure defined in ISO/IEC 3309 and the elements of
procedures described in ISO/IEC 4335.
X3.66.5 describes how the Exchange Identification (XID) command/response
capability can be used by two balanced data stations to mutually determine the
data link layer addresses to be used, prior to the exchange of user information.
X3.66.6 specifies the general purpose information field content and format for
the Exchange Identification (XID) command/response frame when used by data
stations to exchange information regarding the operational characteristics
(capabilities) and optional functions that are supported by the data stations. Its
primary use would be prior to establishment of a data link connection, although
it would also be usable for modification of operating parameters during the
information transfer phase of data communications.
Submit all comments to: X3 Secretariat, Attn.: Lynn Barra, 1250 Eye
Street, NW, Suite 200, Washington, DC 20005, Email: lbarra@itic.nw.dc.us.
Send a copy to: ANSI, Attn.: BSR Center, 11 West 42nd St., New York, NY 10036.
A call for possible patents and pertinent issues (copyrights, trademarks) is
also being issued. Please submit information on these issues to the X3
Secretariat at 1250 Eye Street NW, Suite 200, Washington DC 20005.
Email: x3sec@itic.nw.dc.us
These draft standards can be purchased from Global Engineering Documents, 15
Inverness Way East, Englewood, CO 80112. Telephone: 303-792-2181;
Fax: 303-792-2192. For the purpose of review and comment, these drafts are
being packaged as one document. Upon approval, they will be published as
individual documents.
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