Roytel RT-EIMS6001 SBC is a session border controller, a device usually deployed at the border of the IP voice network.
It provides functions like access permission controlling, NAT traversal and network security mechanism. It has outstanding IP
interworking capability, usually located in the border of IMS network, connecting the end-users to IMS network.
It can provide a maximum of 5,000 subscribers and 2,000 concurrent calls.
Typical application networking diagram
NAT traversal: End-users from different places can register into softswitch of private network via SBC.
Proxy server: For building network security mechanism, the user separates several VPNs. The SBC, as a proxy server, can be
an agent of IP phones under each VPN to realize security among different VPN.