1 General
1.1 Scope
1.2 References
1.3 Terms and definitions
1.4 Abbreviations
1.5 Recommendation structure
2 Call Control, application process
functions
2.1 Introduction
2.1.1 Primitive interface
2.1.2 Assignment procedure of VPCI/VCI and bandwidth
2.1.3 Cell Delay Variation Tolerance Indication
2.2 Successful call/connection Set_Up
2.2.1 Forward address signalling – En bloc
2.2.2 Forward address signalling – AESA
2.2.3 Forward address signalling – Overlap operation
2.2.4 Address_Complete request primitive
2.2.5 Progress (basic call)
2.2.6 Answer primitive
2.2.7 Forward_Transfer primitive
2.2.8 Transit network selection (national option)
2.2.9 Storage and release of information
2.2.10 Simple segmentation (national option)
2.2.11 Connection_Available Request/Indication primitive
2.3 Unsuccessful call/connection setup
2.3.1 Lack of resources at the incoming side
2.3.2 Lack of resources at the outgoing side
2.3.3 Actions at an exchange receiving an Incoming_Resources_Rejected
primitive
2.3.4 Actions at an exchange receiving a Release message
2.3.5 Address Incomplete
2.3.6 Tones and announcements
2.3.7 Unable to modify allocated bandwidth
2.3.8 Invalid combination of traffic parameters and QoS class
2.4 Normal call/connection Release
2.4.1 General
2.4.2 Release initiated by a calling party
2.4.3 Release initiated by a called party
2.4.4 Release initiated by the network
2.4.5 Pre-release information transport
2.5 Suspend, Resume (network
initiated)
2.5.1 Suspend (network initiated)
2.5.2 Resume (network initiated)
2.5.3 Expiration of timers "await network resume" and "await
network resume‑international"
2.6 Propagation delay determination
2.6.1 Procedure
2.7 Successful modification during
active phase
2.7.1 Modify Request/Indication primitive
2.7.2 Modify Response/Confirmation primitive
2.7.3 Connection_Available Request/Indication primitive
2.8 Unsuccessful modification during
active phase
2.8.1 Lack of resources
2.8.2 Actions at an exchange receiving a Modify_Rejected primitive
2.8.3 Actions at an exchange receiving a release primitive after sending
Modify Request primitive
2.8.4 Actions at an exchange receiving a confusion primitive
2.9 Interworking with nodes not
supporting the capabilities included in this ITU-T Recommendation
2.9.1 Negotiation procedures
2.9.2 Modification procedures
2.9.3 Interworking with exchanges not supporting the requested ATM traffic
capabilities
2.9.4 Frame relay
2.9.5 Cell delay variation tolerance indication
2.9.6 Negotiation of AAL type parameter
2.9.7 Individual QoS parameters
2.9.8 Explicit QoS parameter
2.10 Error indication primitive
2.11 Support for Temporary Alternative Routing
(TAR)
2.12 Hop counter procedure
2.12.1 Actions at the initiating exchange
2.12.2 Actions at an intermediate exchange
2.12.3 Actions at the destination local exchange
2.13 Automatic re-routing (Crankback)
2.13.1 Actions at the intermediate exchange
2.13.2 Actions at the originating local exchange
2.13.3 Actions at the destination local exchange
2.14 Procedures for individual QoS
parameters
2.14.1 Cumulative Cell Delay Variation
2.14.2 End-to-end transit delay network generated indicator
2.14.3 Cell Loss Ratio (CLR)
2.15 Primitive contents
2.16 Modification rules for adjustment
of ABR traffic capability during call/connection setup
2.17 Signalling procedures for
negotiation of AAL type parameter
2.17.1 Procedure
3 Maintenance Control, Application
Process functions
3.1 Introduction
3.2 Reset
3.2.1 Actions at Reset initiating exchange
3.2.2 Actions at Reset responding exchange
3.2.3 Abnormal Reset procedures
3.3 Blocking and unblocking of virtual
paths
3.3.1 Initiating blocking
3.3.2 Initiating unblocking
3.3.3 Receiving blocking
3.3.4 Receiving unblocking
3.3.5 Abnormal procedures
3.4 User Part Availability procedure
3.4.1 Inaccessible User Part
3.4.2 User Part Unavailability – Unknown
3.4.3 Unequipped User Part
3.5 Transmission alarm handling
3.6 Automatic congestion control
3.6.1 Receipt of a Release indication or incoming_resources_rejected
indication containing an Automatic Congestion Level parameter
3.6.2 Actions taken during overload
3.7 B-ISDN User Part signalling
congestion control
3.7.1 General
3.7.2 Procedures
3.8 Destination Availability
3.9 VPCI/VPI Consistency Check
3.9.1 Initiating Consistency Check Request
3.9.2 Receiving Consistency Check Request
3.9.3 Initiating Consistency Check End
3.9.4 Receiving Consistency Check End
3.9.5 Abnormal procedures
3.10 Primitive contents
4 Compatibility, Application Process
functions
4.1 Introduction
4.1.1 Primitive interface
4.1.2 General requirements on receipt of unrecognized signalling information
4.2 Procedures for the handling of the
unrecognized messages or parameters
4.2.1 Unrecognized Messages – Type A- and Type B-exchanges
4.2.2 Unrecognized parameters – Type A- and Type B-exchanges
4.2.3 Unrecognized parameter values
4.3 Procedures for the handling of
responses indicating unrecognized information has been sent
4.3.1 Type A-exchanges
4.3.2 Type B-exchanges
5 Network Interface function
5.1 Introduction
5.2 Primitive Interfaces
5.2.1 MTP interface
5.2.2 AEI interface
5.3 Procedures
5.3.1 Message format errors
5.3.2 Distribution
5.3.3 Primitive mapping
5.4 SDL diagrams
6 Single Association Control
Function (SACF)
6.1 Introduction
6.2 Outgoing messages
6.3 Incoming messages
6.3.1 Message and parameter distribution
6.4 Handling of identifiers
6.4.1 Exceptional procedures
6.5 Other lower layer indication
primitives
6.5.1 Destination_Unavailable indication
6.5.2 Destination_Available indication
6.5.3 Remote_Status indication
6.6 SDL diagrams
7 Bearer Connection Control ASE (BCC
ASE)
7.1 Primitive interface
7.2 Outgoing BCC ASE
7.2.1 Bearer connection setup
7.2.2 Bearer connection release
7.2.3 Bearer connection modification procedures
7.3 Incoming BCC ASE
7.3.1 Bearer connection setup
7.3.2 Bearer connection release
7.3.3 Bearer connection modification
7.4 Primitive contents
7.5 SDL diagrams
8 Call Control ASE (CC ASE)
8.1 Primitive interface
8.2 Outgoing CC ASE
8.3 Incoming CC ASE
8.4 Primitive
contents
8.5 SDL diagrams
9 Maintenance control ASE (MC ASE)
9.1 Primitive interface
9.2 Resource reset
9.2.1 Sending reset
9.2.2 Receiving reset
9.2.3 Exceptional procedures
9.3 Resource blocking
9.3.1 Sending blocking/unblocking
9.3.2 Receiving blocking/unblocking
9.3.3 Exceptional procedures
9.4 User part availability
9.4.1 Procedures
9.4.2 Exceptional procedures
9.5 Congestion level parameter
9.6 Resource testing
9.6.1 Sending VPCI Consistency Request/VPCI Consistency Check End
9.6.2 Receiving VPCI Consistency Request/VPCI Consistency Check End
9.6.3 Exceptional procedures
9.7 Primitive contents
9.8 SDL diagrams
10 Unrecognized Information ASE (UI ASE)
10.1 Primitive interface
10.2 Unrecognized parameters
10.2.1 Received parameters
10.2.2 Sent parameters
10.3 Unrecognized messages
10.3.1 Received messages
10.3.2 Sent messages
10.4 Confusion messages
10.5 Primitive contents
10.6 SDL diagrams
11 Timers in B-ISUP
12 Interactions of capabilities
12.1 Cell Delay Variation Tolerance Indication
12.1.1 Cell Delay Variation Tolerance Indication interaction with traffic
parameter negotiation at connection establishment
12.1.2 Cell Delay Variation Tolerance Indication interaction with connection
modification
Annex A - B-ISUP
specification model
A.1 Introduction
A.2 General model
A.3 Application of the specification
model
A.3.1 Dynamic modelling aspects
A.3.2 Static modelling aspects
Annex B - B-ISUP
example message sequences
B.1 B-ISUP example call setup
sequences
B.2 Example message flows for
negotiation during call setup
B.3 Modification procedures
B.3.1 Example of successful modification sequence for decreasing bandwidth
B.3.2 Example of unsuccessful modification sequence
B.4 Example modification procedures
with negotiation
B.4.1 Example of successful modification with negotiation
B.4.2 Examples of unsuccessful modification with negotiation
Annex C - SDL
overview
C.1 Introduction
Appendix I - Coding
of the message compatibility information subfield
Appendix II - Coding
of the parameter compatibility information subfield
II.1 Transit at intermediate exchange
indicator
II.2 Send notification indicator
II.3 Discard parameter indicator,
discard message indicator, release call indicator, pass on not possible
indicator
II.4 Broadband/Narrow-band interworking
indicator
Appendix III -
Illustration of the CDVT indication procedures
Appendix IV - AESA
routing examples
IV.1 E.164 AESA
IV.2 Non-E.164 AESA
IV.2.1 E.164 Called party number required
IV.2.2 Originating network using TNS
IV.2.3 E.164 Called party number not required