Microsoft KB Archive/269085

= XCCC: H.323 Conference Participants Are Unable to View IP Multicasting Conference Participants =

Article ID: 269085

Article Last Modified on 10/28/2006

-

APPLIES TO


 * Microsoft Exchange 2000 Conferencing Server

-



This article was previously published under Q269085



SYMPTOMS
When you use the H.323 connectivity method, you are unable to hear or see other participants that are using the IP Multicasting connectivity method (and vice versa). However, participants who use the same connectivity method can see and hear each other.



CAUSE
The T.120 MCU/H.323 bridge is not able to connect with IP Multicasting participants. Therefore, audio and video translation between the two connectivity methods cannot occur.

NOTE: This topology assumes that the T.120 MCU/H.323 bridge is located on a server other than the server that is running the Conference Management Service (CMS).



RESOLUTION
To resolve this issue, establish IP Multicasting connectivity between the two separate servers.



WORKAROUND
To work around this issue, force all clients to use the H.323 connectivity method instead of the IP Multicasting connectivity method.

For additional information about how to force H.323 connectivity for Windows 2000 platforms, click the article number below to view the article in the Microsoft Knowledge Base:

259227 How to Force Conference Client Multicast or H.323 Support

Additional query words: ECS Exchange Conference

Keywords: kbprb KB269085

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.