Cisco Cisco Unified MeetingPlace Audio Server Quick Setup Guide

Users cannot dial out from the Cisco  WebEx web meeting. When they try to do so, the following 

message appears: “There was an error attempting to communicate with the telephony bridge.” 
Instructions for dialing in to the voice meeting also appear.

The telephony connection was lost because the time difference between the 

Cisco Unified MeetingPlace Application Server and the Cisco WebEx authentication server was 
greater than three minutes; this causes authentication to fail between Cisco Unified MeetingPlace 
and Cisco WebEx.

Make sure that you configure the Cisco Unified MeetingPlace Application Server to use 

Network Time Protocol (NTP). You typically configure NTP during the installation of Cisco Unified 
MeetingPlace. After installation, you can use the 

 command to configure NTP.

As a temporary workaround, you can use the 

 command to manually set the time of the 

Cisco Unified MeetingPlace Application Server to match the Cisco WebEx authentication server time.

As a temporary workaround, users can follow the displayed instructions to dial in to the 

meeting, but note that the web meeting room does not associate the audio events of dial-in users with the 
web meeting participant names.

Your Cisco WebEx account is not configured to support dial-out calls.

Contact your WebEx Customer Success Manager to make sure that the following are checked 

in your Cisco WebEx account:

Call-in teleconferencing 

Call-back teleconferencing 

Global call-back teleconferencing 

Other teleconference service 

The following options in the Cisco WebEx web meeting do not work:

Mute and unmute

Lock and unlock the audio conference

Invite by phone

The telephony connection between Cisco Unified MeetingPlace and Cisco WebEx 

was lost. To verify, check the telephony connection status.

Try the solutions provided for when the telephony connection is down.