User's Manual
Table Of Contents
- WebSTAR™ DPC2223™ and EPC2223™ VoIP Cable Modem with DECT Base Station User’s Guide Introduction
- Notice for CATV Installers
- In This Guide
- IMPORTANT SAFETY INSTRUCTIONS
- What’s In the Carton?
- Front Panel Description
- Back Panel Description
- Where Is the Best Location for My Cable Modem?
- What Are the System Requirements for Internet Service?
- How Do I Set Up My High-Speed Internet Access Account?
- How Do I Connect My Devices to Use the Internet?
- How Do I Configure TCP/IP Protocol?
- How Do I Install USB Drivers?
- What Are the Requirements for Ethernet Network Devices?
- How Do I Select and Place Ethernet Network Devices?
- How Do I Connect Ethernet Network Devices?
- What Are the Requirements for USB Network Devices?
- How Do I Select and Place USB Network Devices?
- How Do I Connect USB Network Devices?
- Troubleshooting My Internet Service Installation
- How Do I Use My Modem for Telephone Service?
- Where Do I Place My Modem for Telephone Service?
- What Are the Requirements for Telephone Service?
- How Do I Install the Modem for Telephone Service?
- How Do I Maintain the Battery? (Optional Model only)
- How Do I Mount the Cable Modem on a Wall? (Optional)
- Telephone Service Frequently Asked Questions
- Having Difficulty?
- Tips for Improved Performance
- Front Panel LED Status Indicator Functions
- Notices
- FCC Compliance
- For Information
WebSTAR DPC2223 and EPC2223 VoIP Cable Modem User’s Guide Preliminary Draft 02 – 1/26/06
20
What Are the Requirements for Ethernet Network Devices?
How Many Ethernet Network Devices Can I Connect?
The WebSTAR Cable Modems can support several Ethernet network devices
using external Ethernet hubs that must be purchased separately. The theoretical
maximum number of Ethernet network devices supported is by the cable modem
is 63. However, under normal circumstances, the number of devices connected
should be a much lower number. Contact your service provider for more
information on the maximum number of Ethernet network devices to connect to
the cable modem in order to maintain optimal network performance.
What are the Wiring Requirements for Ethernet Networking?
A number of factors can impact the practical limit of the network. Although the
WebSTAR Cable Modem is designed to support several Ethernet network
devices, it is important to view the characteristics of the entire network and not
just each individual node. The theoretical distance between two 10/100BaseT
CAT-5 Ethernet hubs is 382 feet (100 meters). Contact your service provider or
consult the documentation for your Ethernet network devices for more
information.
Note: Scientific-Atlanta recommends that you use CAT-5 Ethernet cables.
Do I Need to Configure the TCP/IP Protocol on My Computer?
In order for you to use Ethernet network devices on your network, you must have
the TCP/IP protocol properly configured on your PC. Refer to How Do I
Configure TCP/IP Protocol, earlier in this guide, for detailed information on
configuring the TCP/IP protocol.