ECMA 332 : 1ED 2001

1 Scope
2 Conformance
3 References
4 Definitions
   4.1 External definitions
   4.2 Other definitions
        4.2.1 Gateway
        4.2.2 IP network
        4.2.3 Ring-back tone
5 Acronyms
6 Architecture
7 General requirements
8 Message mapping requirements
   8.1 Message validation and handling of protocol
        errors
   8.2 Call establishment from QSIG to H.323
        8.2.1 Call establishment from QSIG to H.323
               using admission procedures
        8.2.2 Call establishment from QSIG to H.323
               without admission procedures
   8.3 Call establishment from H.323 to QSIG
        8.3.1 Receipt of an H.225.0 SETUP message
        8.3.2 Additional messages relating to overlap
               sending
        8.3.3 Receipt of a QSIG CALL PROCEEDING message
        8.3.4 Receipt of a QSIG ALERTING message
        8.3.5 Receipt of a QSIG CONNECT message
   8.4 PROGRESS messages and Progress indicator
        information elements
        8.4.1 Receipt of a Progress indicator
               information element in a QSIG message
        8.4.2 Receipt of a Progress indicator
               information element in an H.225.0
               message
        8.4.3 Transmission of Progress indicator
               information element in support of
               gateway-provided ring-back tone
   8.5 Call clearing
        8.5.1 Call clearing initiated by QSIG
        8.5.2 Call clearing initiated by H.323
9 Numbering requirements
   9.1 Supported numbering plans and types of number
   9.2 Mapping numbers from QSIG to H.323
   9.3 Mapping numbers from H.323 to QSIG
   9.4 Handling of presentation and screening
        indicators
   9.5 Handling of subaddresses
10 Security requirements
11 Requirements for support of basic services
   11.1 Calls from QSIG to H.323
   11.2 Calls from H.323 to QSIG
12 Media channel establishment
13 Requirements for the support of group 3 fax in
   accordance with H.323 annex D
   13.1 Start of fax transmission
   13.2 End of fax transmission
14 Requirements for the support of DTMF
15 Requirements for the provision of ring-back tone
Annex A - Implementation Conformance Statement
          (ICS) proforma
Annex B - Example message sequences

Describes signalling interworking between "QSIG" and "H.323" in support of basic services within a corporate telecommunication network (CN).