Table of Contents

Preface

1. VoIP and H.323 Overview

1.1. VoIP Overview

1.2. H.323 Overview

1.2.1. H.323 Entities

1.2.2. H.323 Protocol Stack

1.2.3. Codecs

1.3. Basic H.323 Call Scenario

1.3.1. Call Setup

1.3.2. Capability Exchange

1.3.3. Call Initiation

1.3.4. Data Exchange

1.3.5. Call Termination

1.4. H.323 Call Scenario Via a Gateway

1.4.1. Establishing Contact with the Gatekeeper

1.4.2. Requesting Permission to Call

1.4.3. Call Signaling and Data Exchange

1.4.4. Call Termination

1.5. References

2. Using Global Call with IP Technology

2.1. Global Call Over IP Architecture with an Embedded Stack

2.1.1. Host Application

2.1.2. Global Call

2.1.3. IP Signaling Call Control Library (IPT CCLib)

2.1.4. IP Media Call Control Library (IPM CCLib)

2.1.5. IP Media Resource

2.2. Device Control

3. Applying Global Call Functions to IP Technology

3.1. Function Variances

3.1.1. gc_AcceptCall( )

3.1.2. gc_AnswerCall( )

3.1.3. gc_AttachResource( )

3.1.4. gc_Detach( )

3.1.5. gc_DropCall( )

3.1.6. gc_Extension( )

3.1.7. gc_GetAlarmParm( )

3.1.8. gc_GetANI( )

3.1.9. gc_GetCallInfo( )

3.1.10. gc_GetDNIS( )

3.1.11. gc_GetResourceH( )

3.1.12. gc_GetXmitSlot( )

3.1.13. gc_Listen( )

3.1.14. gc_MakeCall( )

3.1.15. gc_OpenEx( )

3.1.16. gc_SetConfigData( )

3.1.17. gc_SetAlarmParm( )

3.1.18. gc_SetUserInfo( )

3.1.19. gc_UnListen( )

3.2. Supported Global Call Functions

3.3. Supported Global Call Call States

3.4. Supported Global Call Events

4. Using Global Call for IP-Specific Tasks

4.1. Using Fast and Slow Start Connections

4.1.1. Establishing a Connection as Viewed from the Calling Side

4.1.2. Establishing a Connection as Viewed from the Called Side

4.2. Setting Call-Related Information

4.2.1. Setting the Values of System-Wide Parameters

4.2.2. Setting the Values of Line Device Parameters

4.2.3. Setting the Values of Call Parameters

4.2.4. Setting and Retrieving Disconnect Cause or Reason Values

4.2.5. Setting Coder Information

4.2.6. Specifying Nonstandard Data for H.245 Messages

4.3. Retrieving Current Call-Related Information

4.3.1. Retrieving Nonstandard Data From Protocol Messages

4.4. Sending Protocol Messages

4.4.1. UII Message (H.245)

4.4.2. Nonstandard Command Message (H.245)

4.4.3. Facility Message (Q.931)

4.4.4. Sending Facility or UII Message Scenario

4.5. Configuring DTMF Handling

4.6. Call Routing

4.7. Setting and Retrieving Quality of Service (QoS) Thresholds

4.7.1. Retrieving the Media Device Handle

4.7.2. Setting QoS Threshold Values

4.7.3. Retrieving QoS Threshold Values

4.7.4. Handling QoS Alarms

4.7.5. Call Scenario Using QoS Threshold Values

4.7.6. Sample Code for Managing QoS Threshold Alarms

5. Building Applications

5.1. Required System Software

5.2. Global Call IP-Specific Header Files

5.3. Pre-Call Setup

5.4. Call Setup and Teardown

6. IP-Specific Parameter Set Reference

6.1. GC_SETCHAN_CAPABILITY Parameter Set

6.2. IPSET_CALLINFO Parameter Set

6.3. IPSET_CONFERENCE Parameter Set

6.4. IPSET_MSG_H245 Parameter Set

6.5. IPSET_MSG_Q931 Parameter Set

6.6. IPSET_NONSTANDARDDATA Parameter Set

6.7. IPSET_USERINPUTINDICATION Parameter Set

6.8. IPSET_VENDORINFO Parameter Set

7. Data Structure Reference

7.1. IP_AUDIO_CAPABILITY

7.2. IP_CAPABILITY

7.3. IP_CAPABILITY_UNION

7.4. IP_H221NONSTANDARD

7.5. IP_MEDIA_STREAM_INFO

7.6. IP_RTCPINFO

7.7. RTCP_RECEIVERREPORT

7.8. RTCP_REPORT

7.9. RTCP_SENDERREPORT

8. IP-Specific Event Cause Codes

9. Called and Calling Party Address List Format

9.1. Called Party Address List

9.2. Calling Party Address List

9.3. Examples of Called and Calling Party Addresses

Glossary

Index

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