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OfficeServ 7400 System Description
© SAMSUNG Electronics Co., Ltd. 2-35
2.3.4.7 GWIMT
Gigabit WAN Interface Module TX (GWIMT) provides WAN interfaces to support data
network to the keyphone system. GWIMT provides a leased line for data communication
between the keyphone system and the Internet, supports for connecting, xDSL/cable
modem interface, and performs functions for VPN, QoS and Firewall. For the leased line
ports, there are a port, which is available to connect up to E1 speed, and a port, which is
available to connect up to T3/E3 (50 Mbps). In addition, there is an additional DMZ port
that makes firewall construction easy.
Main Functions
The main functions of the GWIMT data module are as follows:
y Routing between WAN and LAN
y Supporting Multi WAN ports (Leased line, xDSL/cable modem interface)
y Functions for VPN, QoS and Firewall
y Providing various external interfaces for data transmission/reception with the external
Internet.
y Providing ports for connecting with the internal network
y Leased line interface using V.35/HSSI
y Functioning as 10/100/1000 BASE-TX Ethernet port interworking with xDSL or cable
modem
y Functioning as 10/100/1000 BASE-TX for Ethernet LAN interfaces
y Providing UART ports for configuration setting
y Functioning as various applications such as firewall and VPN
The Gigabit WAN Interface Module TX (GWIMT) provides a WAN interface to support a
data network on the key phone system. The GWIMT supports a leased line and xDSL/cable
modem interface connectivity and performs the VPN, QoS, and firewall functions for data
communication between the key phone system and the Internet. The leased line provides
two ports, one supporting up to E1 speed and the other supporting up to T3/E3 speed (50
Mbps).
Main Functions
y IPv4/IPv6 routing between the WAN and LAN
y IPv6 over IPv4 tunneling
y Virtual Router Redundancy Protocol (VRRP)
y GRE tunneling (generic routing encapsulation)
y Supporting multi WAN ports (Leased line, xDSL/cable modem interface)
y VPN, QoS, and firewall functions
y IPSec NAT-traversal and VPN pass-through functions