MSC Networking Structure

Networking Structure

By separating the bearer from the control, a networking model, with the softswitch technology as the core, can use bearer networks such as the IP and TDM. This is a key feature of the softswitch technology. At present, most carriers choose the softswitch technology to build mobile core networks (CNs). By using the distributed networking mode and IP bearers, mobile softswitches provide carriers with the following benefits:

• Reducing operation costs by improving the efficiency of network transmission
• Protecting the carrier investment by providing a smooth evolution from one model to another as the subscriber base and traffic increases

The mobile softswitch solution provides a 2G and 3G convergence networking scheme that is easy to operate and maintain to address the networking requirements and network features of carriers. The solution supports the networking schemes of the GSM, 3GPP R99, 3GPP R4, and 3GPP R5. Typical networking model of the mobile softswitch solution for 3GPP R4.

Mobile softswitch solution

BSS: Base Station Subsystem

UTRAN: UMTS Terrestrial Radio Access Networkr

SBC: Session Border Controlle

MSC Server: Mobile Switching Center Server

CN: Core Network

MGW: Media Gateway

CS: Circuit Switched domain

PS: Packet Switched domain

HLR: Home Location Register

IMS: IP Multimedia Subsystem

SGSN: Serving GPRS Support Node

GGSN: Gateway GPRS Support Node

HSS: Home Subscriber Server

PSTN: Public Switched Telephone Network