Overview of the IMSG
This chapter describes the Integrated Multi-Service Gateway (IMSG). Topics include:
- IMSG Session Border Control Solution Overview
- IMSG Architecture Overview
- BSG Policy Overview
- Manipulation of Headers and Request URIs in SIP Messages
- Media Anchoring Overview
- SIP Routing Overview
- Locating SIP Servers Using DNS Overview
- Virtual Interfaces and NAT Pool Assignment with the IMSG
- IMSG VPN Routing Overview
- SIP Timers Overview
- Providing QoS for VoIP Traffic Overview
- IMSG Overload Protection Overview
- Providing Call Admission Control (CAC) Overview
