CUCM Feature Compatibility and Support
Cisco Webex Meetings Server (CWMS) supports Cisco Unified Call Manager (CUCM) 8.6 or 9.0 without TLS/SRTP, and CUCM 9.1, 10.0, 10.5, 11.0(1a), 11.5, 11.5(1)SU1 and later service updates (SU), and 12.0SU1 and later SUs.
For a list of CUCM releases tested with CWMS, see the Release Notes for Cisco Webex Meetings Server for your release.
Important |
TLS connections between CUCM and CWMS fail with releases of CUCM that do not support certificates that are signed with a signature algorithm SHA256 with RSA encryption. Upgrade CUCM to a version that supports this signature algorithm or obtain a third-party certificate that is signed with SHA1 with RSA encryption. According to the latest National Institute of Standards and Technology (NIST) recommendation, SHA1 should not be used for digital signature generation because it has a security vulnerability. |