Cisco Dpq3925x User Manual

							4021193 Rev C  101 
 
 Tips for Improved Performance 
 
Tips for Improved Performance 
Check and Correct 
If your residential gateway does not perform as expected, the following tips may 
help. If you need further assistance, contact your service provider. 
 Verify that the plug to your residential gateway AC power is properly inserted 
into an electrical outlet. 
 Verify that your residential gateway AC power cord is not plugged into an 
electrical outlet that is controlled by a wall switch. If a wall switch controls the 
electrical outlet, make sure the switch is in the ON position. 
 Verify that the ONLINE LED status indicator on the front panel of your 
residential gateway is illuminated. 
 Verify that your cable service is active and that it supports two-way service. 
 Verify that all cables are properly connected, and that you are using the correct 
cables. 
 Verify that your TCP/IP is properly installed and configured if you are using the 
Ethernet connection. 
 Verify that you have called your service provider and given them the serial 
number and MAC address of your residential gateway. 
 If you are using a cable signal splitter so that you can connect the residential 
gateway to other devices, remove the splitter and reconnect the cables so that the 
residential gateway is connected directly to the cable input. If the residential 
gateway now functions properly, the cable signal splitter may be defective and 
may need to be replaced. 
 For best performance over an Ethernet connection, your PC should be equipped 
with a Gigabit Ethernet card. 
  
						

							102  4021193 Rev C 
 
Front Panel LED Status Indicator Functions 
 
Front Panel LED Status Indicator Functions 
Initial Power Up, Calibration, and Registration (AC Power applied) 
The following chart illustrates the sequence of steps and the corresponding 
appearance of the residential gateway front panel LED status indicators during 
power up, calibration, and registration on the network when AC power is applied to 
the residential gateway. Use this chart to troubleshoot the power up, calibration, and 
registration process of your residential gateway. 
Note: After the residential gateway completes Step 11 (Telephone Registration 
Complete), the modem proceeds immediately to Normal Operations. See Normal 
Operations (AC Power applied) (on page 104).  
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration 
 Part 1, High Speed Data Registration 
Step:  1 2 3 4 5 6 
Front Panel Indicator Self Test Downstream Scan Downstream Signal Lock Ranging Requesting IP Address Request High Speed Data Provisioning File 
1 POWER On  On On On On On 
2 DS On Blinking On On On On 
3 US On Off Off Blinking On On 
4 ONLINE On Off Off Off  Off Blinking 
5 ETHERNET 1-4 On On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
6 USB On On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
7 WIRELESS LINK Off On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
8 WIRELESS SETUP Off On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
9 TEL 1 On Off Off Off  Off Off 
10 TEL 2 On Off Off Off  Off Off 
11 BATTERY On Off Off Off Off Off 
  
						

							4021193 Rev C  103 
 
 Front Panel LED Status Indicator Functions 
 
 
Front Panel LED Status Indicators During Initial Power Up, Calibration, and Registration 
Part 2, Telephone Registration 
Step 7 8 9 10 11 
Front Panel Indicator Data Network Registration Complete 
Requesting Telephone IP Address 
Request Telephone Provisioning File 
Restarting Voice Service Telephone Registration Complete 
1 POWER On On On On On 
2 DS On On On On On 
3 US On On On On On 
4 ONLINE On On On On On 
5 ETHERNET 1 – 4 On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
6 USB On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
7 WIRELESS LINK On or Blinking On or Blinking On or Blinking On or Blinking On or Blinking 
8 WIRELESS SETUP Off Off Off On or Blinking On or Blinking 
9 TEL 1 Off Blinking Off Blinking On 
10 TEL 2 Off Off Blinking Blinking On 
11 BATTERY Off Off Off` Off Off 
  
						

							104  4021193 Rev C 
 
Front Panel LED Status Indicator Functions 
 
  
Normal Operations (AC Power applied) 
The following chart illustrates the appearance of the residential gateway front panel 
LED status indicators during normal operations when AC power is applied to the 
gateway.  
Front Panel LED Status Indicators During Normal Conditions 
Front Panel 
Indicator 
Normal Operations 
1 POWER On 
2 DS On 
3 US On 
4 ONLINE On 
5 ETHERNET 
1 - 4 
 On - When a single device is connected to the Ethernet port and no data is being sent to or 
from the modem 
 Blinks - When only one Ethernet device is connected and data is being transferred between 
the consumer premise equipment (CPE) and the wireless home gateway 
 Off - When no devices are connected to the Ethernet ports 
6 USB  On - When a single device is connected to the USB port and no data is being sent to or from 
the modem 
 Blinks - When only one USB device is connected and data is being transferred between the 
consumer premise equipment (CPE) and the wireless home gateway 
 Off - When no devices are connected to the USB ports 
7 WIRELESS 
LINK 
 On - When the wireless access point is enabled and operational 
 Blinks - When data is being transferred between the CPE and the wireless home gateway 
 Off - When the wireless access point is disabled by the user 
8 WIRELESS 
SETUP 
 Off - When wireless setup is not active 
 Blinks - When wireless setup is active to add new wireless clients on the wireless network 
9 TEL 1  On - When telephony service is enabled 
 Blinks - When line 1 is in use 
10 TEL 2  On - When telephony service is enabled 
 Blinks - When line 2 is in use 
11 BATTERY  On – When battery is charged 
 Blinks – When battery charge is low 
 Off – when there is no battery in the unit    
						

							4021193 Rev C  105 
 
 Front Panel LED Status Indicator Functions 
 
Special Conditions 
The following chart describes the appearance of the cable modem front panel LED 
status indicators during special conditions to show when you have been denied 
network access.  
Front Panel LED Status Indicators During Special Conditions 
Front Panel Indicator Network Access Denied 
1 POWER Slow Blinking 
1 time per second 
2 DS Slow Blinking 
1 time per second 
3 US Slow Blinking 
1 time per second 
4 ONLINE Slow Blinking 
1 time per second 
5 ETHERNET 
1 – 4 
Slow Blinking 
1 time per second 
6 USB Slow Blinking 
1 time per second 
7 WIRELESS 
LINK 
Slow Blinking 
1 time per second 
8 WIRELESS 
SETUP 
Slow Blinking 
1 time per second 
9 TEL 1 Off 
10 TEL 2 Off 
11 BATTERY On 
 
  
						

							106  4021193 Rev C 
 
Notices 
 
Notices 
Trademarks 
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its 
affiliates in the U.S. and other countries. A listing of Ciscos trademarks can be found 
at www.cisco.com/go/trademarks. 
DOCSIS is a registered trademark of Cable Television Laboratories, Inc. 
PacketCable is a trademark of Cable Television Laboratories, Inc. The Wi-Fi 
Protected Setup mark is a mark of the Wi-Fi Alliance. Wi-Fi Protected Setup is a 
trademark of the Wi-Fi Alliance. 
Other third party trademarks mentioned are the property of their respective owners. 
The use of the word partner does not imply a partnership relationship between 
Cisco and any other company. (1009R) 
Disclaimers 
Cisco Systems, Inc. assumes no responsibility for errors or omissions that may 
appear in this guide. We reserve the right to change this guide at any time without 
notice. 
The maximum performance for wireless is derived from IEEE Standard 802.11 
specifications. Actual performance can vary, including lower wireless network 
capacity, data throughput rate, range and coverage. Performance depends on many 
factors, conditions and variables, including distance from the access point, volume of 
network traffic, building materials and construction, operating system used, mix of 
wireless products used, interference and other adverse conditions. 
Documentation Copyright Notice 
Information in this document is subject to change without notice. No part of this 
document may be reproduced in any form without the express written permission of 
Cisco Systems, Inc.  
Software and Firmware Use 
The software described in this document is protected by copyright law and 
furnished to you under a license agreement. You may only use or copy this software 
in accordance with the terms of your license agreement.  
						

							4021193 Rev C  107 
 
 Notices 
 
The firmware in this equipment is protected by copyright law. You may only use the 
firmware in the equipment in which it is provided. Any reproduction or distribution 
of this firmware, or any portion of it, without our express written consent is 
prohibited. 
  
						

							108  4021193 Rev C 
 
For Information 
 
For Information 
If You Have Questions 
If you have technical questions, call Cisco Services for assistance. Follow the menu 
options to speak with a service engineer.     
						

							 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
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 www.cisco.com 
This document includes various trademarks of Cisco Systems, Inc. Please see the Notices 
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© 2010-2011, 2012 Cisco and/or its affiliates. All rights reserved. 
May 2012 Printed in United States of America Part Number  4021193 Rev C