Session Border Controller SBC, resolve network interconnection

Session Border Controllers Session Border Controller, namely session border controller SBC has gradually become NGN and IMS network (IMS (IP Multimedia Subsystem) that is IP Multimedia Subsystem) standard product (as Lanswitch and router). Also widely known as BAC (border access controller), located at ABG IMS network (access border gateway), solve network access terminal NAT NGN service deployment encountered / FW traversal, security, interoperability, QoS (Quality of Service, Quality of Service) and other issues. Session border controller (SBC, or session controller) is a VoIP call control products for the environment solely by VoIP telephone transmission without the need for gateways. It uses all three VoIP protocols --H.323 Gatekeeper, SIP proxy and Media Gateway Control Protocol (MGCP). It will play in the future an important role in providing VoIP services, allowing across multiple IP networks, even if there is a firewall to pass through, but also to provide quality assurance of VoIP services. There are a variety of functions: play network access terminals (NAT) in the role of service provider networks, hide the real IP address of the user's network interconnection; the details of the service provider network structure hidden network interconnection, such as the number and location of the server ; when you log on from the Internet, act as a network firewall, denial of service attacks; the transmission quality of service information, complete the conversion between different mechanisms to be used when different service providers; management connection at call setup, the number of packets sent and regulators too For more media types, which can prevent the user when the application attempts to transmit voice services and video services; providing detailed call information for the billing and settlement; handle NAT traversal, allows operators without requiring users to upgrade the firewall can provide them with services. Because of the above features session border controllers, it occupies a very important position in the quality control of VoIP security. Main features - the ability to have firewall traversal - support the proximal / distal end NAT traversal - Support media agency, voice / video media RTP packet forwarding - Support for TLS / SRTP encryption and other methods, for signaling and media stream encryption / decryption - provide voice quality (packet loss rate) monitor the quality of calls - Support for QoS - Supports SIP, RTP / RTCP, HTML / HTTP protocols - Support MSRP protocol - Support SSH Management - supports static routing capabilities - Support whitelist feature strengthen access control devices - have blocked IP softswitch, signaling the port was closed and other capabilities - with network fault detection and RTP resource release function - Supports gateway registration and certification - Support TR069 Management Protocol - with a sound security policy including information encryption, NAT address hiding, to prevent malicious attacks to intercept illegal IP packet filtering packages, such as garbage signaling and media stream encryption support TLS / SRTP encryption and other methods, for signaling and media streams are encrypted / decrypted media Acting RTP media stream packet forwarding, firewall traversal, proximal / distal NAT across multiple softswitch platforms support multiple softswitch platform media streaming security policy / signaling flow filtration, intercept illegal IP packets, NAT address hiding, to prevent malicious attacks on the media stream / signaling encryption / decryption, security log information certification / registration supports the registration and certification standards gateway protocol SIP, RTP / RTCP, TLS, SRTP, HTTP, TCP / UDP, NTP / SNTP, TFTP, ARP, ICMP, MSRP service QoS guarantee voice quality (loss) monitoring, routing, class of service priority (flow control), a user calling / called information, media streaming distinguish network fault detection with network fault detection capability state statistics online terminal information, concurrent calls The maximum amount of concurrent statistical performance (voice packets) 400 does not encrypt the biggest users registered 3000 simultaneous sessions are not encrypted user registration packet transfer delay is less than 30 milliseconds management user interface Web-based management interface, centralized management and maintenance TR069 maintenance management, static routing, support for RS-232 serial interface, Telnet and SSH support hardware network interface RJ45, 4 × 10 / 100M Base-T, adaptive CON configure the interface RJ45 SD card interface a 256MB system memory 32MB of system memory power supply 100 to 240 volts, 50-60 Hz AC , 1 amp maximum current consumption 70 watts (maximum) Dimensions (height X width X depth) 44 × 300 × 440 mm; suitable for 19-inch wide rack-mount Net Weight: 3 kg; Gross Weight (with packing): 5 kg Environment Requirements Operating temperature: 0 ~ 40 ° C; Humidity: 10% to 90% (non-condensing) Storage temperature: -10 to 60 degrees C; Humidity: 5% to 90% (non-condensing) Other specifications safety and electromagnetic compatibility FCC, CE