Suzuki Tuning
Citroen Tuning
Download Area
About Me
Site Map


EPX2203 Overview

Some Basic information about the Scientific Atlanta WebSTAR EPX2203 cable modem

Manufacturer : Scientific Atlanta
Model : WebSTAR EPX2203
Documentation : User Manual  / Specifications
Download: USB Drivers


The WebSTART EPX2203T Cable Modem features an embedded media terminal adapter (EMTA) and two RJ-11 telephone ports for voice services as well as an RJ-45 Ethernet port and a USB port for high-speed data connectivity.

The hardware platform of the EPX2203 is designed to comply with Euro-PacketCable 1.0 and Euro-DOCSIS 2.0 specifications.

The standard EPX2203 provides two voice CODECs: G711 and G728. Other CODECs are available on request. Call signaling is compliant with Euro-PacketCable's Network Call Signaling (NCS) specifications.

The EPX2203 can be equipped with an optional battery pack that can provide up to 11 hours of standby operation or 8 hours of active calling in the event of an AC power failure. Many third-party battery backups are also compatible with the EPX2203.

The housing of the EPX2203 incorporates a hide-away stabilizer bar that pivots out when standing the unit on end or it tucks neatly away when the unit is set horizontally on a desktop
or when wall-mounted.


To facilitate setup and troubleshooting, the EPX2203 includes WebWizard, a browser-based graphical user interface. WebWizard facilitates both setup and troubleshooting and eliminates the need to load setup software on the CPE. In addition, the seven LEDs on the front panel provide an informative and easy-to-understand display that indicates cable modem status and real-time data transmission activity.



. Designed to comply with Euro-DOCSIS 2.0 and Euro-PacketCable 1.0 specifications
. Embedded Media Terminal Adapter provides two lines of voice
. Battery backup powering options
. Attractive compact design
. WebWizard graphical user interface for simple setup
. Enhanced bi-directional performance maximizes data throughput
. Stands vertically, lies flat on the desk top, or mounts easily on the wall
. Bridged 10/100BaseT Ethernet port with Auto-MDIX and a USB port to facilitate quick
connectivity to Customer Premise Equipment (CPE) for high-speed data service
  • Rugged electronic components for long-term reliability
  • Support for up to 64 users (1 USB port user and up to 63 users on user-supplied Ethernet hubs)
  • USB 1.1 drivers for Microsoft Windows 98SE, ME, 2000, and XP
  • Support for Broadcom's Propane packet header suppression
  • Software upgradeable by network download
  • Remote manageability through SNMP V1/V2 and V3
  • CD-ROM containing user's guide and USB driver installation software


Network Signaling Protocol NCS (Network-Based Call Signaling)
Codecs RF Downstream Standard: G.711 and G.728 Optional: G.711 and G729 Annex E, or G.711 and Broadcom's BroadVoice 16
Frequency Range 108 MHz to 862 MHz
Demodulation 64 QAM or 256 QAM
Maximum Data Rate 41.4 Mbps for 64 QAM or 55.2 Mbps for 256 QAM
Bandwidth 8 MHz
Operating Level Range -17 dBmV to +17 dBmV
Input Impedance RF Upstream 75 ohms
Frequency Range 5 MHz to 65 MHz
Modulation 16 QAM QPSK 64 QAM 128 QAM TCM
Maximum Data Rate 10.2 Mbps for 16 QAM 5.12 Mbps for QPSK 30.0 Mbps for A-TDMA and SCDMA
Bandwidth 200 kHz to 6.4 MHz
Operating Level Range +8 dBmV to +58 dBmV
Output Impedance Other 75 ohms
Input Voltage 12 or 15 VDC
Power Consumption (modem module) 6.6 Watts
Data Ports (1) RJ-45 Ethernet 10/100 BaseT Auto-sensing with Auto-MDIX (1) USB 1.1 Slave
Telephone / Fax (2) RJ-11
RF Female "F" type
Dimensions (H x D x W) 17.3 cm x 13.4 cm x 3.2 cm (6 13/16 in. x 5 1/4 in. x 1 1/2 in.)
Weight (approximate) 0.36 kg (12.8 oz)
Operating Temperature 0C to 40C (32F to 104F)
Operating Humidity 0 to 90% RH non-condensing
Storage Temperature -20C to 70C (-4F to 158F)
Standards Compliance
Euro-PacketCable 1.0 Yet to be certified
WHQL Certified
Regulatory Compliance
UL, CUL, FCC B, and CE Certified as required per country where the EPX2203 will be used