Unified Communications (UC) over IP Multimedia Subsystem (IMS): Solutions and Market/Business Analysis

Table of Contents
 
1. WHAT'S UNIFIED COMMUNICATION 4
1.1. Unified Communication Solution Models 6
1.2. SWOT analysis with UC models 8
1.3. Key players SWOT analysis in hosted UC market 11

2. WHAT ARE THE COMPONENTS IN UNIFIED COMMUNICATION SOLUTION? 15
2.1. UC Enabler/Core  15
2.2. UC Applications  16
2.3. Session Border 16
2.4. Access Layer  17
2.5. User Equipment Layer 17

3. WHAT'S NETWORK ARCHITECTURE OF IMS HOSTED UNIFIED COMMUNICATION? 18
3.1. IMS Hosted UC Network Architecture Overview  18
3.1.1.  IMS Network Core/UC Enabler Layer 18
3.1.2.  Access Border Layer 20
3.1.3.  Application Layer  20
3.1.4.  OSS/BSS Layer  20
3.1.5.  Access Layer  20
3.2. Key functions to allow enterprise UC to be hosted by IMS carrier Network  21
3.3. Typical UC Scenarios through IMS network  22
3.3.1.  User Register Scenario 23
3.3.2.  On-Net Call 25
3.3.3.  Off-Net Call 27
3.3.4.  Presence/IM  29
3.3.5.  Voice Message delivery 33
3.3.6.  Remote Access 35
3.3.7.  High Availability Scenario  39

4. WHY IMS HOSTED UNIFIED COMMUNICATION? 42
4.1. Benefits to Enterprise customers  42
4.2. Benefits to Telecom Carrier 42

5. CONCLUSION 43

List of Figures

Figure 1: On-Premise UC solution 6
Figure 2: Hosted PBX UC solution 7
Figure 3: IMS Hosted UC Solution 8
Figure 4: Unified Communication Components  15
Figure 5: IMS Hosted UC Network Architecture18
Figure 6: User Registration  24
Figure 7: On-Net Call Scenario  26
Figure 8: Off-Net Call  28
Figure 9: Presence Status Update 31
Figure 10: IM Call Flow  32
Figure 11: UM delivery Call Flow  34
Figure 12: Remote Access Call Flow  37
Figure 13: High Availability 1- Disaster Recovery 40
Figure 14: High Availability 2 - LAN outage 41

List of Tables

Table 1: UC Market Growing Drivers 2011-2016 (Source: Frost & Sullivan)  4
Table 2: Unified Communication Feature Categories  5
Table 3: Notes For User Registration Scenario  24
Table 4: On-Net Call Notes  26
Table 5: Off-Net Call Notes  29
Table 6: Presence Status Update Scenario Notes 31
Table 7: IM Scenario Notes  32
Table 8: Remote Access Scenario Notes  38