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Troubleshooting Guide for Cisco Unified
Videoconferencing 3500 MCU Release 5.1
Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
Text Part Number: OL-12051-01

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   Summary of Contents for Cisco 3500 MCU

  • Page 1

    Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Text Part Number: OL-12051-01...

  • Page 2

    OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. CCVP, the Cisco Logo, and the Cisco Square Bridge logo are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn is a service mark of Cisco Systems, Inc.; and Access Registrar, Aironet, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, Cisco, the Cisco...

  • Page 3: Table Of Contents

    Resolving Quality Issues in Cascaded Conferences Resolving Endpoint Disconnection Issues Resolving Unexpected Conference Termination Resolving Presentation Issues Resolving Participant Connection Issues Resolving Unexpected SIP Call Disconnection Resolving Audio and Video Issues in SIP Calls Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 4

    Contents Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 5: Preface

    Preface Revised: November 27, 2006, OL-12051-01 Purpose This guide provides the information you need to troubleshoot problems in the Cisco Unified Videoconferencing 3500 MCU. Audience This guide is intended for network administrators and end users who need help addressing operational problems in the Cisco Unified Videoconferencing 3500 MCU.

  • Page 6: Obtaining Documentation

    The Product Documentation DVD is a library of technical product documentation on a portable medium. The DVD enables you to access installation, configuration, and command guides for Cisco hardware and software products. With the DVD, you have access to the HTML documentation and some of the PDF files found on the Cisco website at this URL: http://www.cisco.com/univercd/home/home.htm...

  • Page 7: Documentation Feedback

    We encourage you to use Pretty Good Privacy (PGP) or a compatible product (for example, GnuPG) to encrypt any sensitive information that you send to Cisco. PSIRT can work with information that has been encrypted with PGP versions 2.x through 9.x.

  • Page 8: Product Alerts And Field Notices

    Modifications to or updates about Cisco products are announced in Cisco Product Alerts and Cisco Field Notices. You can receive Cisco Product Alerts and Cisco Field Notices by using the Product Alert Tool on Cisco.com. This tool enables you to create a profile and choose those products for which you want to receive information.

  • Page 9: Submitting A Service Request

    Cisco engineer. The TAC Service Request Tool is located at this URL: http://www.cisco.com/techsupport/servicerequest For S1 or S2 service requests, or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

  • Page 10: Obtaining Additional Publications And Information

    • The Cisco Online Subscription Center is the website where you can sign up for a variety of Cisco e-mail newsletters and other communications. Create a profile and then select the subscriptions that you would like to receive. To visit the Cisco Online Subscription Center, go to this URL: http://www.cisco.com/offer/subscribe...

  • Page 11

    Preface • World-class networking training is available from Cisco. You can view current offerings at this URL: http://www.cisco.com/en/US/learning/index.html Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 12

    Preface Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 13: Troubleshooting The Cisco Unified Videoconferencing 3500 Mcu

    Videoconferencing 3500 MCU This section covers problems you might encounter when configuring, operating and managing the Cisco Unified Videoconferencing 3500 MCU. This chapter provides suggested actions you can use to solve the problems, and includes the following topics. This section describes the following topics: Resolving MCU Failure to Register with the Gatekeeper, page 1-2 •...

  • Page 14: Resolving Mcu Failure To Register With The Gatekeeper

    Troubleshooting the Cisco Unified Videoconferencing 3500 MCU Resolving MCU Failure to Register with the Gatekeeper Resolving MCU Failure to Register with the Gatekeeper This section describes what to do if the MCU fails to register with the Cisco IOS H.323 Gatekeeper. Possible Causes Verification Steps The gatekeeper address is set incorrectly.

  • Page 15: Resolving Mcu Conference Initiation Failure

    MCU. You can perform this operation using the serial connection via the countdown menu visible after rebooting the EMP. • Reboot the EMP after modifying the controlling MCU. Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 16: Resolving Conference Access Failure

    Note Cascading requires one port from each conference. Services are not synchronized. Verify that service definitions do not include differences such as H.235 being enabled on one conference only. Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 17: Resolving Quality Issues In Cascaded Conferences

    Unreliable network link between the MCU and the Check network link quality (round trip time gatekeeper. should be less than 300 msec). Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

  • Page 18: Resolving Presentation Issues

    The MCU does not publish all its capabilities Check the Use Empty Invite when sending invite when inviting other participants. messages to endpoints option in MCU > Protocols > SIP > Advanced. Troubleshooting Guide for Cisco Unified Videoconferencing 3500 MCU Release 5.1 OL-12051-01...

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