ECMA 309 : 2ED 2001

1 Scope
2 Conformance
3 Normative references
4 Definitions
  4.1 External definitions
  4.2 Other definitions
       4.2.1 Association D
       4.2.2 Association E
       4.2.3 Association F
       4.2.4 Association G
       4.2.5 Entity A
       4.2.6 Entity B
       4.2.7 Entity B
       4.2.8 Entity C
       4.2.9 Entity D
       4.2.10 Entity E
       4.2.11 Entity F
       4.2.12 Entity G
       4.2.13 Entity H
       4.2.14 Gateway
       4.2.15 Leg A
       4.2.16 Leg B
       4.2.17 Leg B
       4.2.18 Leg C
       4.2.19 Rerouting entity
       4.2.20 Scenario A1
       4.2.21 Scenario A2
       4.2.22 Scenario B1
       4.2.23 Scenario B2
       4.2.24 Scenario C1
       4.2.25 Scenario C2
       4.2.26 Scenario D1
       4.2.27 Scenario D2
       4.2.28 Scenario E1
       4.2.29 Scenario E2
       4.2.30 Scenario F1
       4.2.31 Scenario F2
       4.2.32 Scenario G1
       4.2.33 Scenario G2
5 Acronyms
6 Service architecture
  6.1 Service architecture for invocation
       and operation
       6.1.1 ECMA-174 service architecture
       6.1.2 H.450.3 service architecture
       6.1.3 Scenarios for interworking
       6.1.4 Determination of the location of the
              rerouting entity when interworking
  6.2 Service architecture for activation, deactivation
       and interrogation
       6.2.1 ECMA-174 service architecture
       6.2.2 H.450.3 service architecture
       6.2.3 Scenarios for interworking
7 Protocol interworking - General requirements
8 Protocol interworking - Messages and APDUs
  8.1 Scenario A1
  8.2 Scenario A2
  8.3 Scenario B1
  8.4 Scenario B2
  8.5 Scenario C1
  8.6 Scenario C2
  8.7 Scenario D1
  8.8 Scenario D2
  8.9 Scenario E1
  8.10 Scenario E2
  8.11 Scenario F1
  8.12 Scenario F2
  8.13 Scenario G1
  8.14 Scenario G2
Annex A - Implementation Conformance Statement
          (ICS) proforma
Annex B - Example message sequence diagrams

Signalling interworking between "QSIG" and "H.323" in support of call diversion supplementary services within a Corporate telecommunication Network (CN) is specified. "QSIG" is a signalling protocol that operates at the Q reference point between Private Integrated Services eXchanges (PINX) within a Private Integrated Services Network (PISN). "H.323" is a set of signalling protocols for the support of voice or multimedia communication within a packet network, in particular a packet network that uses the Internet Protocol (IP) as its network layer protocol (IP network).