3Com 5012 Installation Guide - Page 8

8 CHAPTER 1: OVERVIEW Voice Capabilities 3Com 5000 Routers support multiple voice interface modules, which can provide such interfaces as FXO/FXS/E&M, E1VI, T1VI. The FXS/FXO/E&M interface can connect common phone sets, fax machines and private branch exchanges (PBXs); the CE1/PRI or CT1/PRI interface can connect the E1 or T1 interface of switches, as well as communicating with the gatekeeper (GK). With high-speed CPU and digital signal processing (DSP) technology, 3Com 5000 Routers can provide voice over IP (VoIP) services with high quality voice. They can drive down the cost of long distance communications between main office and branches in enterprise deployment. xDSL /MPLS Features xDSL is a simple but highly-efficient broadband technology that achieves the maximum data transmission capacity over existing copper wiring by using the digital code modulation technology. The ADSL/ADSL-I/G.SHDSL module for 3Com 5000 Routers allows the medium-to-small-sized enterprises to access the Internet over DSLAM equipment via PSTN. MPLS, a combination of IP and ATM technologies, replaces the traffic identified by IP header with a short and length-fixed label, based on which a router makes the forwarding decision. It can provide faster forwarding speed, get support from IP routed protocols, and control protocols, thus satisfying the requirements that various new applications put on the network. MPLS VPN is a VPN technology that implements the interconnection of private networks via Label Switched Paths (LSPs). As LSP is a tunnel across the public network on its own, MPLS has an inherent advantage in terms of VPN implementation. 3Com 5000 Routers usually act as Label Edge Routers (LERs) to implement service classification, label distribution, encapsulation, and multi-label peel-off by connecting an MPLS domain to a non-MPLS domain or connecting MPLS domains of different service providers. Data Security ■ Supports ID authentication protocols, including PAP (Password Authentication Protocol), CHAP (Challenge Handshake Authentication Protocol), RADIUS (Remote Authentication Dial in User Service), TACACS+. ■ Implements firewall to prevent invasions from external networks. ■ Supports VPN (Virtual Private Network, including GRE, L2TP) and provides IPSec (IP Security) and IKE (Internet Key Exchange) technologies. Hence, the security of your private network in the Internet environment can be guaranteed. ■ Provides backup solutions based on the backup center technology. Online Software 512 KB Boot ROM and 32 MB Flash memory provides adequate physical carrier to Upgrade upgrade the software online, add new features, and extend new functions according to market demands. Chassis 3Com 5000 Router adopts integrated structure design. It performs excellently on heat dissipation, EMC (Electromagnetic Compatibility) and safety.