SYMPTOMS
Your users periodically have difficulty contacting your
Exchange 2000 Conferencing Server. Some users may receive the following error
message when they try to join or view a conference:
No
T.120 MCU server is available
When you review the application logs on
your Conferencing Management Service server and the server that hosts the T.120
Multipoint Control Unit (MCU) service, you may find entries similar to one or
more of the following events:Event Type: Error
Event
Source: MSExchangeDCS
Event ID: 8192
Description: 0x8004F007
E_DCS_NOT_RUNNING-or-Event Type:
Error
Event Source: MSExchangeDCS
Event ID: 8192
Description: :
0x8004F034 E_DCS_MCU_CALL_TIMED_OUT-or-Event
Type: Error
Event Source: MSExchangeDCS
Event ID:
8192
Description: : 8004010F 1271 CdoE_NOT_FOUND-or-Event
Type: Error
Event Source: MSExchangeDCS
Event ID:
8192
Description: : Unexpected error occurred in data conference center
manager-or-Event Type: Error
Event Source:
MSExchangeDCS
Event ID: 8200
Description: : An error occurred while
attempting to add the T.120 MCU IL06EXN01.mot.com to the server topology. Error
code: 8004f034These messages appear in the application log at
approximately the same time as users are experiencing difficulty connecting to
the conferencing server. After a few moments, the MSExchangeDCS, the Exchange
Conferencing Management Service, and the server that is hosting the T.120(MCU)
resume communication and users can again connect to the conferences without
difficulty.