Avia Tablet Accessory Avaya Custom Edition Manuale Utente Pagina 61
- Pagina / 74
- Indice
- SEGNALIBRI
- Communications 1
- Publisher’s Acknowledgments 4
- Contents at a Glance 5
- Foreword 6
- About This Book 9
- Foolish Assumptions 9
- How This Book Is Organized 9
- Introduction 10
- Icons Used in This Book 11
- Where to Go from Here 11
- The Case for SIP 12
- What Is SIP? 13
- Presenting Presence Services 14
- Celebrating User-Centric 14
- SIP guide 15
- Encouraging Interoperability 16
- Simplifying Communications 17
- Architecture 17
- Part 1: The Case for SIP 18
- SIP at a Glance 20
- Based on Existing Internet 21
- Standards 21
- Getting Down to One Address 21
- SIP “business cards” 22
- A SIMPLE Presence Solution 24
- Components in a SIP Network 24
- Using user agents 25
- Serving up SIP servers 26
- Basic SIP Operations 28
- How SIP Transforms User 30
- Using Presence to Route 32
- One Protocol, Many Modes of 34
- Communication 34
- Making the Most of 36
- User Preference 36
- Catering to the Mobile 37
- User with SIP 37
- How SIP Transforms 40
- Enterprise Communications 40
- Working Together: SIP and 41
- Trunking with SIP 41
- Traditional network model 42
- A simplified communications 44
- Connecting SIP Enterprises 45
- Mapping Phone Numbers 47
- ENUM alternatives 48
- SIP Interoperability 50
- External from the Enterprise 51
- SIP Interoperability Efforts 51
- Part 5: SIP Interoperability 52
- Multi-Vendor Integration 53
- SIP and Server-Free 56
- Peer-to-Peer SIP 57
- Communications Overview 57
- Reaping the Benefits 59
- SIP and the Future of 62
- Intelligent Communications 62
- Integration with Business 63
- Applications 63
- Seamless Use of Multiple 64
- Presence-PBX Integration 64
- Further Optimization 65
- Communication Systems 65
- That Learn 65
- Location-Based Services 66
- Ensuring Privacy 66
- The Internet Multimedia 67
- Subsystem 67
- Top Ten Reasons for SIP 68
- Enhanced Communications 68
- Preference-Based 69
- An Open Standard 69
- Interoperability 69
- Unified Addressing 70
- Operational Cost Savings 70
- Simplified Communications 70
- Creation of New Services 71
- Native Mobility 71
- Ease of Implementation and 71
- INTERNET & DIGITAL MEDIA 72
- CS For Dummies 73
- CS Timesaving 73
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