Field Notice: FN - 72261 - One-Way Audio with WebRTC Server Versions Rl_2021.07 and Later - Workaround Provided

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Updated:October 26, 2021
Document ID:FN72261

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Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision Publish Date Comments
1.0
19-Oct-21
Initial Release

Products Affected

Affected OS Type Affected Software Product Affected Release Affected Release Number Comments
NON-IOS
Base Software
RI
RI.2021.07
Cisco Webex Broadworks WebRTC Server

Defect Information

Defect ID Headline
CSCvz86555 CSCvz86555: Upgrade to WRS 2021.07 results in one-way audio

Problem Description

A recent change to the cryptographic library that is used by the Cisco BroadWorks WebRTC Server impacts calls and causes one-way audio.

Background

Due to a recent change in the cryptographic library, there is only one-way audio when calls are made with the Cisco BroadWorks WebRTC Server in versions Rl_2021.07 and later. 

Problem Symptom

When a user joins a session, other joined parties can hear the user, but the user cannot hear the Dual-Tone Multi-Frequency signaling (DTMF) or hear the other parties.

Workaround/Solution

Workaround:

In order to work around this issue, Cisco recommends that users revert to the previous version of the BroadWorks WebRTC Server: BroadWorks WebRTC Server - RI.2021.06.

Solution:

As a temporary solution, Cisco recommends that users do not upgrade to BroadWorks WebRTC Server versions 2021.07 and later, until a fix is available.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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