CHAPTER 2.
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2.3.4 Data Board
This section describes the data board for transmitting/receiving data to/from the Internet or
Intranet.
2.3.4.1 WIM
The WAN Interface Module (WIM) allows the OfficeServ 7200 to transmit/receive data
to/from the external Internet. It offers a variety of external interfaces and ports for
connecting with the internal network. One WIM board provides applications and a variety
of external interfaces.
Major Functions
The major functions of the WIM are as follows:
Interworks with dedicated lines using V.35.
Provides the Ethernet port of 10/100 BASE-T that interworks with the xDSL or cable
modem. (WAN1)
Provides the Ethernet port of 10 BASE-T for backup. (WAN2)
Offers the DeMilitarized Zone (DMZ) service.
Provides the Ethernet port of 10/100 BASE-T for the LAN interface.
Provides the UART port for configuration setting.
Provides applications such as a firewall and VPN.
Option Board
Among the boards which can be mounted to the WIM, there is the WIMD.
The WIMD performs tunneling operations via data encryption, decryption, authentication
etc. to implement the WIM‟s Virtual Private Network (VPN) functionality.
All operations are performed in hardware-level, from the option board‟s Network Security
Processor and thus increase the system‟s performance.
Specifications
The specifications of the WIM are as follows:
One V.35 serial port
Two ports for connecting with the external Ethernet network
Three Ethernet port of 10/100 BASE-T (P1~3)
One Ethernet port of 10/100 BASE-T (P4)
