1
Scope
2 References
3 Terms and definitions
4 Abbreviations
5 Conventions
6 Description of the DTE/DCE
interface (physical layer)
6.1 ITU-T X.21 interface
6.2 X.21 bis interface
6.3 V-series interfaces
6.4 G-series interfaces
6.5 I-series interfaces
7 Description of services
7.1 General definition
7.2 Multiplexing
7.3 Service aspect
7.4 Frame transfer priority
7.5 Frame discard priority
7.6 Frame relay service class
7.7 Support of both service class and
priorities
7.8 SVC related services
8 Service parameters and service
quality
8.1 Scope
8.2 Service parameters
8.3 SVC related service parameters
8.4 Service quality
9 Data link transfer control
9.1 General
9.2 Frame format
9.3 Addressing
9.4 Transmission consideration
9.5 Frame relay data transmission
service over SDH
9.6 Fragmentation
10 Call connection control
10.1 General
10.2 Signalling channel
10.3 List of the signalling channel
link layer parameters
10.4 Call states
10.5 Message definitions
10.6 General message format and
information element coding
10.7 Call establishment and clearing
procedures
10.8 Status enquiry and status
procedures
10.9 Restart procedure
10.10 Handling of error conditions
10.11 List of timers
10.12 Closed user group facility
10.13 Transit network selection facility
10.14 Reverse charging facility
10.15 Frame Transfer priority
10.16 Frame Discard priority
10.17 Frame Relay Service Class
10.18 Support of both Service Class and
Priorities
10.19 Charging information
11 PVC management procedures
11.1 Overview
11.2 Message definition
11.3 Message specific information
elements
11.4 Description of procedures
11.5 Optional bidirectional network
procedures
11.6 System parameters
12 Congestion control
12.1 General
12.2 Impact of congestion
12.3 Congestion notification
12.4 DTE congestion detection method
and actions
Annex A – List and
status of the X.36 parameters
Annex B – Functional
support at the DTE/DCE interface
B.1 Protocol Capabilities (PC)
B.2 Frames protocol data units (FR)
B.3 System Parameters (SP)
Annex C –
Consolidated Link Layer Management (CLLM) message
C.1 Address octets
C.2 Control field
C.3 XID information field
C.4 FCS field
C.5 Network CLLM message transmission
procedure
Page
Annex D – Use of frame
relay for multiprotocol encapsulation
D.1 General frame format
D.2 Frame format for ISO CLNP (ISO/IEC
8473)
D.3 Frame format for IP
D.4 Frame format for protocols with
Ethertype code point
D.5 Frame format for bridged packets
D.6 Low layer compatibility
negotiation procedures
D.7 Examples
D.8 Protocol encapsulation format
Annex E – Usage of
cause and location
E.1 Location field generation
E.2 Cause values
E.3 Coding of the diagnostic field
Annex F – Use of NSAP
at the DTE-DCE interface
F.1 Introduction
F.2 Encoding of X.121 numbers as NSAP
F.3 Encoding of E.164 numbers as NSAP
F.4 Other ATM End System Address
coding
Annex G
– Enhancements to PVC
management procedures
G.1 Introduction
G.2 List of changes to clause 11
Annex H – Procedures
defined in X.36 clause 11 and Q.933 Annex A
Appendix I – Examples
of PVC management error events
I.1 Loss of STATUS ENQUIRY message
I.2 Loss of STATUS message
I.3 Invalid Receive Sequence Number
Appendix II – DTE congestion
detection methods and actions
II.1 Implicit congestion detection
II.2 Explicit congestion detection
Appendix III –
Handling of physical layer loopback conditions when using frame relay PVC
bidirectional procedures
III.1 Recommended procedures for DTE/DCE
that can detect loopback at the physical layer
III.2 Recommended procedures for DTE/DCE
that cannot detect loopback at the physical layer
Appendix IV –
Information on address
IV.1 Main address and complementary address
IV.2 Addresses in SETUP message
IV.3 Addresses in CONNECT message
IV.4 Addresses processing by the
network in SETUP message
IV.5 Addresses processing by the
network in CONNECT message
Appendix V –
International network identification according to ITU-T Rec. X.125 for networks
providing frame relay services and numbered
under the E.164 numbering plan
V.1 Introduction
V.2 Assignment and notification
process
Appendix VI – Call
state diagrams at the DCE side of the DTE/DCE interface and DCE actions
VI.1 Foreword
VI.2 Symbol definition of the call
state diagrams
VI.3 Call state diagrams
VI.4 Actions taken by the DCE on receipt of
message in a given call state at the DCE side of the DTE/DCE interface
Appendix VII – Window size for a data link layer
protocol