3Com 3C13701 Installation Manual page 8

8 C 1: O
HAPTER VERVIEW
Voice Capabilities
xDSL /MPLS Features
Data Security
Online Software
Upgrade
Chassis
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 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.
Supports ID authentication protocols, including PAP (Password Authentication
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Protocol), CHAP (Challenge Handshake Authentication Protocol), RADIUS (Remote
Authentication Dial in User Service), TACACS+.
Implements firewall to prevent invasions from external networks.
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Supports VPN (Virtual Private Network, including GRE, L2TP) and provides IPSec
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(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.
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512 KB Boot ROM and 32 MB Flash memory provides adequate physical carrier to
upgrade the software online, add new features, and extend new functions according to
market demands.
3Com 5000 Router adopts integrated structure design. It performs excellently on heat
dissipation, EMC (Electromagnetic Compatibility) and safety.