DW4020 Broadband Internet

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DW4020 terminal is a plug-and-play solution for networking your satellite connection

74 cm DirecWay™ two-way dish antenna
for 4020 terminal

The HNS DW4020 terminal provides high-performance delivery of accelerated IP traffic to large corporations, small/medium enterprises (SMEs) and small offices/home offices (SOHOs) alike.

Related Direcway Products:

Current DIRECWAY customers using the DW4000 two-way broadband terminal can quickly and easily upgrade to the DW4020 to increase their networking capability. The DW4020 terminal provides affordable, immediate access to broadband applications such as streaming video, distance learning/training, Internet and intranet/extranet access.

Supported Broadband Applications

Broadband applications supported by 4020 satellite internet terminal include:

High-speed Internet access
Broadband intranet/extranet access
Corporate training and eLearning
Real-time multimedia streaming to the desktop
Content distribution
Corporate-wide enterprise resource planning
Traditional enterprise uses such as software upgrades, email and client/server applications
IP multicast, unicast and broadcast applications

The terminal is a self-hosted, stand-alone unit that provides an integrated broadband LAN solution to Windows, UNIX, Linux, MAC, and other platforms running IP over Ethernet. The DW4020 is completely self-contained, requiring no external PC to host any functions. It performs many of the functions of a typical IP router, thereby eliminating the need for a separate external router. Router functions performed by the unit include IP routing using RIPV1, RIPV2 or static IP addresses, DHCP Server (assignment of IP addresses on the local LAN), Network Address Translation (NAT), and Firewall using filters.

System Key Features

Key features include:

Ethernet-based Operating System (OS) independent
Scalable Self-hosted
Stand-alone terminal

The terminal can achieve a receive throughput of 2.0 Mbps or more over the satellite per TCP session with an aggregate throughput of greater than 6.0 Mbps. In addition, by implementing the Hughes Performance Enhancement Proxy (PEP) feature, the number of TCP handshakes is reduced and the user data is compressed. This feature minimizes latency over the space link and accelerates the throughput performance so that data can be delivered quickly to the user.

The DW4020 terminal provides broadband access to multiple users connected to the same satellite terminal and supports two-way connectivity between the remote units and the World Wide Web. Adding new remote units is a simple task with this scalable solution. As a business grows, terminals can be quickly installed at new locations.

Table: Hughes DW 4020 tech specs
Technical Specifications
Remote Equipment:
Supported Frequencies:	Ku-band (14.0 – 14.5 GHz uplink, 10.95 – 12.75 GHz downlink)
Outdoor Unit:
Ku-band:	0.5 or 1.0 watt
Data Protocol Support:
Protocols:	TCP/IP, UDP/IP, IP multicast
Satellite Specifications: Outbound Carrier Specifications
Data Rates:	4.6 Mbps to 48 Mbps
Modulation:	QPSK
Encoding:	Concatenated Reed-Solomon and Viterbi FEC
Code Rates:	Reed-Solomon: 188/204 Viterbi: 7/8, 5/6, 3/4, 2/3 or 1/2
Bit Error Rate:	10-10 or better
Satellite Specifications: Inbound Carrier Specifications
Data Rates:	64, 128 or 256 Kbps
Modulation:	OQpsk
Encoding:	Viterbi Rate 1/2
Code Rates:	10-7 or better
Compatibility:
Operating System:	Any OS which supports IP over Ethernet
Browsers:	Internet Explorer 4.0 or higher Netscape Navigator 4.0 or higher
Internet Applications:	All common TCP/IP applications, UDP or RTP traffic
Physical Interfaces:
Ethernet LAN:	Four switched Ethernet LAN RJ45 ports (10BaseT/100BaseT)
Asynchronous:	One asynchronous port (RS-232) for installation, commissioning and VADB
Power Supply:
Universal Power Supply:	90 – 264 VAC; 47 – 63 Hz
Operating Temperatures:
Indoor equipment:	+5ºC - +40ºC
Outdoor equipment:	-30ºC - +55ºC
Mechanical & Environmental
Weight:	1.8Kg (4.0 lbs)
Dimension (IDU):	16.5cm W x 14.6cm H x 22.3cm D (6.5"W x 5.75"H x 8.8"D)
SNMP Network Manageable using the DIRECWAY vision NMS.

Basically, the 4020 is a USB-to-Ethernet router that lets you run DirecWay 2-way without a PC connected to the modems. It's based on the IBM Power PC processor, the same as is used in IBM's RS/6000 and p-Series Unix computers and the iMacs. And it runs a proprietary OS from Windriver. Basically a set-it-up-and-forget-it version of DirecWay, with a 4-port switch built-in, so you can connect to pretty much any Ethernet enabled computer to the Internet.