CONTENTS

 1     Scope
 2     References
 3     Definitions
        3.1     Definitions of signalling associations
        3.2     Functional model definitions
        3.3     Definition of Signalling Information Elements and Identifiers
        3.4     General Definitions
 4     Abbreviations
 5     Conventions
 6     Architecture
        6.1     Service Architecture
                  6.1.1     Analogue Loop and Analogue Trunk
                  6.1.2     ISDN Basic Access
                  6.1.3     ISDN Primary Access
                  6.1.4     B-ISDN DSS2 Access
        6.2     Architecture Discussion
                  6.2.1     ACN-E Architecture
                  6.2.2     ISN/IMN Architecture
        6.3     Protocol Reference Model
        6.4    Recommendation structure
 7     Signalling Identifiers used in the BICC Access Network
        7.1     Description of Signalling Identifiers
        7.2     Assignment of User-ID between the ACN-E and CSF
 8     Signalling Transport Protocol Stacks
        8.1     Operation of BICC Access Network Signalling Encapsulation
                  8.1.1     Actions of the Application-Specific Functions
                  8.1.2     Actions of the Message-Multiplex Function
 9     Coding and Procedures for BICC Access Network Common Header
        9.1     Coding for BICC Access Network Common Header
                  9.1.1     Requesting and Destination Node Address
                  9.1.2     Pointer
        9.2     Procedures for Addressing using the BICC Access Network Common Header
                  9.2.1     Operation at the ISN/IMN
                  9.2.2     Operation at the ACN-E
                  9.2.3     Operation at the ACN-T
10     Coding and Procedures for BICC Access Network Messages
       10.1     List of Identifiers
       10.2     User Identifier
       10.3     Logical Port Identifier
       10.4     Connection Identifier
       10.5     Connection Group Identifier
       10.6     Access Control Association Identifier
       10.7     Application Data
11     Coding and Procedures for BICC Access Network Call Control
       11.1     Procedures for Call Control
                 11.1.1     Successful Call Admission
                 11.1.2     Successful Call Establishment
                 11.1.3     Normal call release
       11.2     Abnormal conditions
                 11.2.1     Receipt of unreasonable signalling information
                 11.2.2     Handling of message format errors
                 11.2.3     Handling of unexpected messages
                 11.2.4     Compatibility for the BICC Access Network Call Control
12     Coding and Procedures for Access Network Control
       12.1     Formats and Codes for BICC Access Network Control
                 12.1.1     Coding of Action Indicators Unique to the BICC Access Network
       12.2     Procedures for BICC Access Network Control
                 12.2.1     Successful Bearer Establishment
       12.3     Additional set-up procedures
                 12.3.1     Introduction
                 12.3.2     Codec Negotiation
                 12.3.3     Bearer Control Unit Identifier (BCU-ID)
                 12.3.4     Out-of-band transport of DTMF and Tone information
                 12.3.5     Codec modification/mid-call codec negotiation procedures
                 12.3.6     Connection Group Identifier
                 12.3.7     Interaction with services invoking bearer redirection
                 12.3.8     Procedures for reuse of idle bearers
                 12.3.9     Procedures for use of Structured AAL 1 bearers
       12.4     Normal bearer release
                 12.4.1     Procedures at the CSF
                 12.4.2     Procedures at the ACN-T
                 12.4.3     Procedures at the ACN-E
       12.5     Bearer cut-through (optional procedures at ACN-T)
       12.6     Cut BNC (optional procedures at ACN-T)
       12.7     Abnormal conditions
                 12.7.1     Receipt of unreasonable signalling information
                 12.7.2     Handling of message format errors
                 12.7.3     Handling of unexpected messages
                 12.7.4     Compatibility for BICC Access Network Control
       12.8     Timers for the BICC Access Network Control Protocol
13     Coding and Procedures for Remote Media Control
       13.1     H.248 Functions Applicable to Remote Media Control
       13.2     Procedures for Remote Media Control
                 13.2.1     Successful Call Admission
                 13.2.2     Successful Call Establishment
       13.3     Additional set-up procedures
                 13.3.1     Introduction
                 13.3.2     Echo Control
                 13.3.3     Out-of-band transport of DTMF and Tone information
                 13.3.4     Interaction with services invoking bearer redirection
       13.4     Normal call release
       13.5     Bearer cut-through procedures
       13.6     Cut BNC procedures
       13.7     Abnormal conditions
                 13.7.1     Receipt of unreasonable signalling information
                 13.7.2     Handling of message format errors
                 13.7.3     Handling of unexpected messages
                 13.7.4     Compatibility for the BICC Remote Media Control
Appendix I – BICC Access Network Q.921 Relay
        I.1        Description of Changes to the BICC Access Network Protocol
        I.2        Protocol Stacks
        I.3        Service Access Point to the Q.931 Signalling Layer at the CSF
        I.4        Service Access Point to the Q.2150.0 Signalling Transport Layer at the CSF
        I.5        Service Access Point to the Q.2150.0 Signalling Transport Layer at the ACN-E
        I.6        Service Access Point to the Q.921 LAPD Relay at the ACN-E
Appendix II – BICC Access Network Q.931 Relay
       II.1     Protocol Stacks
       II.2     Service Access Point to the Q.931 Signalling Layer at the CSF
       II.3     Service Access Point to the Q.2150.0 Signalling Transport Layer at the CSF
       II.4     Service Access Point to the Q.931 Signalling Layer at the ACN-E
       II.5     Service Access Point to the Q.2150.0 Signalling Transport Layer at the ACN-E
Appendix III – BICC Access Network Q.2931 Relay
      III.1     Protocol Stacks
      III.2     Service Access Point to the Q.2931 Signalling Layer at the CSF
      III.3     Service Access Point to the Q.2150.0 Signalling Transport Layer at the CSF
      III.4     Service Access Point to the Q.2931 Signalling Layer at the ACN-E
      III.5     Service Access Point to the Q.2150.0 Signalling Transport Layer at the ACN-E
Appendix IV – BICC Access Network G.964 Relay
       IV.1     Description of Changes to the BICC Access Network Protocol
       IV.2     Protocol Stacks
       IV.3     Service Access Point to the G.964 Signalling Layer at the CSF
       IV.4     Service Access Point to the Q.2150.0 Signalling Transport Layer at the CSF
       IV.5     Service Access Point to the LAPV5-EF Relay at the ACN-E
Bibliography