BS ISO/IEC 13247:1997

Foreword
Introduction
1 Scope
2 Conformance
3 Normative references
    3.1 References from ISO, IEC or ITU-T
    3.2 References from other sources
4 Definitions
    4.1 Definitions in PNNI 1.0
    4.2 Other external definitions
    4.3 Other definitions
5 List of acronyms
6 General Principles
    6.1 Protocol model
    6.2 Services provided to CCH
    6.3 Services required of the CCH
    6.4 Protocol Control states
    6.5 CCH states at a Transit PINX
    6.6 Additional CCH states relating to the provision of
          N-PISN services at a Transit PINX
7 Message functional definitions and content
    7.1 Messages for B-QSIG call/connection control
    7.2 Additional or modified messages related to the
          support of 64 kbit/s based PISN circuit-mode
    7.3 Messages for point-to-multipoint call/connection
          control
    7.4 Messages used with the global call reference
8 General message format and information elements coding
    8.1 Overview
    8.2 Protocol discriminator
    8.3 Call reference
    8.4 Message type, and message length
    8.5 Variable length information elements for B-ISDN
          environment
    8.6 Information Elements for the support of 64 kbit/s
          based ISDN circuit mode services
    8.7 Information Elements for Point-to-Multipoint Call/
          Connection control
9 Protocol control procedures for B-QSIG point-to- point
    calls/connections
    9.1 Establishment of a signalling AAL
    9.2 Call/Connection establishment
    9.3 Call/Connection clearing
    9.4 Call/connection collisions
    9.5 Restart procedure
    9.6 Handling of error conditions
    9.7 Error procedures with explicit action indication
    9.8 Handling of messages with insufficient information
    9.9 Notification procedures
    9.10 Notification of interworking
    9.11 List of Timers
10 Call/Connection Control Procedures for Point-to-
    Multipoint Calls
11 Procedures for the support of 64 kbit/s based circuit
    mode basis services in B-PISN and interworking
    between N-PISNs and B-PISNs
    11.1 Introduction
    11.2 Use of information elements for N-PISN services
    11.3 Interworking PINX procedures for the succeeding
          side
    11.4 Interworking PINX procedures for the preceding side
    11.5 Overlap sending
    11.6 Notification of interworking
    11.7 Tones and announcements
12 Call/connection handling requirements
    12.1 Transit PINX call/connecting handling requirements
    12.2 Originating PINX call/connection handling
          requirements
    12.3 Terminating PINX call/connection handling
          requirements
    12.4 Incoming Gateway PINX call/connection handling
          requirements
    12.5 Outgoing Gateway PINX call/connection handling
          requirements
    12.6 Interworking PINX call/connection handling
          requirements for N-PISN less or greater than
          B-PISN interworking
    12.7 Interworking PINX call/connection handling
          requirements for B-PISN less or greater than
          N-PISN interworking
Annexes
A Protocol Implementation Conformance Statement (PICS)
    proforma
B Soft permanent virtual connection procedures
C Mapping functions to support 64 kbit/s based circuit-mode
    PISN services in B-PISNs and interworking between
    N-PISNs and B-PISNs (QSIG/B-QSIG)
D Specification and Description Language (SDL)
    representation of protocol control procedures
E Guidelines for the use of instruction indicators
F Description of the capabilities supported by the
    protocol defined in this International Standard
G Specification and Description Language (SDL)
    representation of CCH at a Transit PINX and at an
    Interworking PINX
H Manufacturer specific information
I Possible strategies for avoidance of IPVCI collisions
J Differences between this International Standard and
    PNNI 1.0
K Specification and Description Language (SDL)
    representation of point-to-multipoint procedures
L Guidelines for interworking with ATM Forum PNNI 1.0

Specifies the signalling protocol for basic call/connection control at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected within a Broadband Private Integrated Services Network (B-PISN) using Asynchronous Transfer Mode (ATM).

This International Standard defines the signalling protocol for the purpose of basic call/connection control at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected together within a Broadband Private Integrated Services Network (B-PISN) employing Asynchronous Transfer Mode (ATM). This International Standard is part of the B-QSIG signalling system.

The Q reference point is defined in ISO/IEC 11579-1.

This International Standard is an application of the signalling protocol that forms part of the ATM Forum\'s PNNI 1.0 specification, which in turn is based on ITU-T Recommendation Q.2931, including the provisions for symmetrical operation described in annex H of recommendation Q.2931. Technical differences compared with the signalling protocol specified in PNNI 1.0 are summarized in annex J. Guidelines for interworking between a network employing the signalling protocol specified in this International Standard and a network employing the ATM Forum\'s PNNI 1.0 specification are given in annex L.

This International Standard is applicable to PINXs which interconnect to form a B-PISN using static hop-by-hop routeing. It therefore complements the ATM Forum\'s PNNI 1.0 specification, which is applicable to networks that employ dynamic source routeing.

The basic capabilities supported by the protocol specified in this International Standard are listed below and described in more detail in annex F:

• demand (switched) virtual channel and virtual path connections;

• point-to-point switched virtual channel and virtual path connections;

• point-to-multipoint virtual channel connections;

• connections with symmetric or asymmetric bandwidth requirements;

• single-connection (point-to-point) calls;

• basic signalling functions via protocol messages, information elements, and procedures;

• CBR, VBR (realtime and non-realtime), UBR and ABR service categories;

• negotiation of certain signalling parameters;

• inter-PINX virtual channel identifier (IPVCI) negotiation;

• out-of-band signalling for all signalling messages;

• error recovery;

• B-PISN addressing formats;

• end-to-end compatibility parameter identification;

• signalling interworking with N-PISN and provision of N-PISN services;

• forward compatibility;

• call/connection handling at different types of PINX, including Transit PINX, Originating PINX, Terminating PINX, Incoming Gateway PINX, Outgoing Gateway PINX and Interworking PINX;

• Signalling of individual Q0S parameters

• ATM anycast addresses

• Negotiation of ATM traffic descriptors

• Soft PVPC and PVCC support

• Generic Identifier Transport