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Working Implementation
Agreements for Open Systems
Interconnection Protocols:
Part 2 - Subnetworks
Output from the March 1994 Open Systems Environment Implementors'
Workshop (OIW)
SIG Chair: Fred Burg, AT&T
SIG Editor: Doug Kay/Howard Alexander, Sprint International,
Part 2 - Subnetworks March 1994 (Working)
Brenda Gray, NIST
ii
Part 2 - Subnetworks March 1994 (Working)
Foreword
This part of the Working Implementation Agreements was prepared
by the Lower Layers Special Interest Group (LLSIG) of the Open
Systems Environment Implementors' Workshop (OIW). See Part 1 -
Workshop Policies and Procedures in the "Draft Working
Implementation Agreements" for the workshop charter.
Text in this part has been approved by the Plenary of the
Workshop.
Future changes and additions to this version of these Implementor
Agreements will be published as a new part. Deleted and replaced
text will be shown as struck. New and replacement text will be
shown as shaded.
iii
Part 2 - Subnetworks March 1994 (Working)
iv
Part 2 - Subnetworks March 1994 (Working)
Table of Contents
Part 2 - Subnetworks . . . . . . . . . . . . . . . . . . . . 1
0 Introduction . . . . . . . . . . . . . . . . . . . . . . 1
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative References . . . . . . . . . . . . . . . . . . 1
3 Status . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Errata . . . . . . . . . . . . . . . . . . . . . . . . . 1
5 Local Area Networks . . . . . . . . . . . . . . . . . . . 1
5.1 IEEE 802.2 Logical Link Control . . . . . . . . . . 1
5.2 IEEE 802.3 CSMA/CD Access Method . . . . . . . . . . 1
5.3 IEEE 802.4 Token Bus Access Method . . . . . . . . . 2
5.4 IEEE 802.5 Token Ring Access Method . . . . . . . . 2
5.5 Fiber Distributed Data Interface (FDDI) . . . . . . 2
5.5.1 Token Ring Media Access Control (MAC,
X3.139-1987) . . . . . . . . . . . . . . . 2
5.5.2 Token Ring Physical Layer (PHY,X3.148-1988) 2
5.5.3 Physical Layer Media Dependent (PMD,
X3.166-1989) . . . . . . . . . . . . . . . 2
6 X.25 Wide Area Networks . . . . . . . . . . . . . . . . . 2
6.1 CCITT Recommendation X.25 . . . . . . . . . . . . . 2
6.2 ISO 7776 . . . . . . . . . . . . . . . . . . . . . . 2
6.3 ISO 8208 . . . . . . . . . . . . . . . . . . . . . . 3
7 Integrated Services Digital Networks (ISDN) . . . . . . . 3
7.1 Introduction . . . . . . . . . . . . . . . . . . . . 3
7.2 Implementation Agreements . . . . . . . . . . . . . 3
7.2.1 Physical Layer, Basic Access at "U" . . . . 3
7.2.2 Physical Layer, Basic Access at S and T . . 3
7.2.3 Physical Layer, Primary Rate at "U" . . . . 3
7.2.4 Data Link Layer, D-Channel . . . . . . . . 3
7.2.5 Signaling . . . . . . . . . . . . . . . . . 3
7.2.6 Data Link Layer B-Channel . . . . . . . . . 3
7.2.7 Packet Layer . . . . . . . . . . . . . . . 4
8 Frame Relay Subnetworks . . . . . . . . . . . . . . . . 4
Annex A (informative)
Cross Reference Between CCITT and ANSI Text Relating to ISDN
Agreements . . . . . . . . . . . . . . . . . . . . . . . . . 5
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Part 2 - Subnetworks March 1994 (Working)
Annex B (informative)
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . 6
Annex C (informative)
Cross Reference between CCITT and ANSI Text Relating to Frame
Relay Agreements . . . . . . . . . . . . . . . . . . . . . . 7
C.1 Physical Layer . . . . . . . . . . . . . . . . . . . 7
C.2 Data Transfer . . . . . . . . . . . . . . . . . . . 8
C.3 Control (Signalling) Procedures . . . . . . . . . . 9
Annex D (informative)
Frame Relay Network-to-Network Interface . . . . . . . . . . 10
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Part 2 - Subnetworks March 1994 (Working)
List of Figures
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Part 2 - Subnetworks March 1994 (Working)
List of Tables
Table C1 - ANS - ITU-T cross references . . . . . . . . . . . 9
Table C2 - ANS - ITU-T cross references . . . . . . . . . . . 9
viii
Part 2 - Subnetworks
Editor's Note - All references to Stable Agreements in this
Section are to Version 7.
0 Introduction
(Refer to Stable Implementation Agreements Document)
1 Scope
(Refer to Stable Implementation Agreements Document)
2 Normative References
(Refer to Stable Implementation Agreements Document)
3 Status
This material is current as of December 10, 1993.
4 Errata
Errata are reflected in replacement pages of Version 7, Stable
Document.
5 Local Area Networks
(Refer to Stable Implementation Agreements Document)
5.1 IEEE 802.2 Logical Link Control
(Refer to Stable Implementation Agreements Document)
5.2 IEEE 802.3 CSMA/CD Access Method
(Refer to Stable Implementation Agreements Document)
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Part 2 - Subnetworks March 1994 (Working)
5.3 IEEE 802.4 Token Bus Access Method
(Refer to Stable Implementation Agreements Document)
5.4 IEEE 802.5 Token Ring Access Method
(Refer to Stable Implementation Agreements Document)
5.5 Fiber Distributed Data Interface (FDDI)
5.5.1 Token Ring Media Access Control (MAC, X3.139-1987)
(Refer to Stable Implementation Agreements Document)
Further study is needed to confirm whether a lower default value
or range for T_Req would be useful.
5.5.2 Token Ring Physical Layer (PHY,X3.148-1988)
(Refer to Stable Implementation Agreements Document)
5.5.3 Physical Layer Media Dependent (PMD, X3.166-1989)
(Refer to Stable Implementation Agreements Document)
6 X.25 Wide Area Networks
6.1 CCITT Recommendation X.25
(Refer to the Stable Implementation Agreements Document).
6.2 ISO 7776
(Refer to the Stable Implementation Agreements Document).
2
Part 2 - Subnetworks March 1994 (Working)
6.3 ISO 8208
(Refer to the Stable Implementation Agreements Document).
7 Integrated Services Digital Networks (ISDN)
7.1 Introduction
(Refer to the Stable Implementation Agreements Document).
7.2 Implementation Agreements
(Refer to the Stable Implementation Agreements Document).
7.2.1 Physical Layer, Basic Access at "U"
(Refer to the Stable Implementation Agreements Document).
7.2.2 Physical Layer, Basic Access at S and T
(Refer to the Stable Implementation Agreements Document).
7.2.3 Physical Layer, Primary Rate at "U"
(Refer to the Stable Implementation Agreements Document).
7.2.4 Data Link Layer, D-Channel
(Refer to the Stable Implementation Agreements Document).
7.2.5 Signaling
(Refer to the Stable Implementation Agreements Document).
7.2.6 Data Link Layer B-Channel
(Refer to the Stable Implementation Agreements Document).
3
Part 2 - Subnetworks March 1994 (Working)
7.2.7 Packet Layer
(Refer to the Stable Implementation Agreements Document).
8 Frame Relay Subnetworks
(Refer to the Stable Implementation Agreements Document).
4
Part 2 - Subnetworks March 1994 (Working)
Annex A (informative)
Cross Reference Between CCITT and ANSI Text Relating to ISDN
Agreements
(Refer to the Stable Implementation Agreements Document.)
5
Part 2 - Subnetworks March 1994 (Working)
Annex B (informative)
Bibliography
(Refer to Stable Implementation Agreements Document)
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Part 2 - Subnetworks March 1994 (Working)
Annex C (informative)
Cross Reference between CCITT and ANSI Text Relating to Frame
Relay Agreements
This annex provides a cross-reference listing between those
sections of the ANSI Standards mentioned in clause 8 of this part
and the sections of the corresponding CCITT Recommendations.
C.1 Physical Layer
ANSI T1.403, which is referenced in 8.3.1 of this part, is
equivalent to sections related to the 1544 kbit/s service in the
combination of CCITT Recommendations G.703 and G.704. Exceptions
to Recommendations G.703 and G.704 are listed below:
CCITT Recommendation G.703
The sections related to the 1544 kbit/s interface in this
Recommendation apply with the following exception:
a) Section 2.5: The current text is replaced by: "The
B8ZS code shall be used because connecting line systems
require suitable signal content to guarantee adequate timing
information."
CCITT Recommendation G.704
The sections related to the 1544 kbit/s interface in this
Recommendation apply with the following exceptions:
a) Section 2.1.3 - Allocation of the F-bit: The current
text is to be replaced by: "Table 1/G.704 which provides the
recommended F-bits allocation;"
b) Table 1/G.704:
1) In the column "For character signal," all instances
of '1-7' are replaced by '1-8' (related bits are: 966,
2124, 3282, and 4440);
2) The column "For signalling" is not applicable;
3) The column "Signalling channel designation" is not
applicable;
4) The note a) below the figure is not applicable as it
pertains to items 2) and 3) above;
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Part 2 - Subnetworks March 1994 (Working)
c) Table 2/G.704: The table is not applicable;
d) Section 2.1.3.1.1 - Multiframe alignment signal: The
portion starting with "...as well as to identify..." to the
end of the sentence is not applicable;
e) Section 2.1.3.1.3 - 4 kbit/s data link, (third
paragraph): The entire paragraph is replaced by: "The idle
pattern is the HDLC flag bit pattern (01111110);"
f) Section 2.1.3.2 - Method: twelve-frame multiframe:
This section is not applicable;
g) Section 3.1.2 - Use of 64 kbit/s channel time slots:
This section is not applicable;
h) Section 3.1.3 - Signalling: All sections under 3.1.3
are not applicable;
i) Section 3.2 - Interface at 1544 kbit/s carrying 32
kbit/s channel time slots: All sections under 3.2 are not
applicable;
j) Section 3.3 - Interface at 1544 kbit/s carrying
n*64kbit/s: This section is not applicable.
C.2 Data Transfer
The following table provides the cross-reference between those
sections of the ANS T1.618 Standard referenced in 8.3.2 of this
document and the corresponding ITU-T Q.922 Recommendation.
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Part 2 - Subnetworks March 1994 (Working)
Table C1 - ANS - ITU-T cross references
ANS T1.618 ITU-T Recommendation Q.922
Section 4.2 Section 2.2
Section 4.5 Section 2.5
Section 5.3 Section 3.3
Section 5.3.1 Section 3.3.1
Section 5.3.6--Table 1 (a) Section 3.3.6 -- Table 1/Q.922
Section 5.3.6.2 (10 bits DLCI)
Section 5.3.7 Note
Section 7 Section 3.3.7
ANSI T1.606 (referenced in Annex A, Section A.6
Section 7) ITU-T Recommendation I.370
Section 7.1 Annex A, Section A.6.2.1
Section 7.2 Annex A, Section A.6.2
Annex A (referenced in Appendix I, Section I.2
Section 7.2) Annex A, Section A.7
Section 8
NOTE - Section 5.3.6.2 of ANS T1.618 has no corresponding
section in ITU-T Recommendation Q.922. This section is not
applicable and is not part of the Stable Implementation
Agreements.
C.3 Control (Signalling) Procedures
The following table provides the cross-reference between those
sections of the ANS T1.617 Standard referenced in 8.3.3 of this
document and the corresponding ITU-T Q.933 Recommendation.
Table C2 - ANS - ITU-T cross references
ANS T1.617 ITU-T Recommendation Q.933
Annex D Annex A
Annex B Annex B
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Part 2 - Subnetworks March 1994 (Working)
Annex D (informative)
Frame Relay Network-to-Network Interface
(Refer to the Stable Implementation Agreements Document.)
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