CMS product compatibility

Last Updated : Jul 17, 2025 |

Supported Communication Manager releases


Communication Manager release	CMS release
Communication Manager release	16.x	17.x	18.0	18.1	19.0	19.1	19.2	20.0	21.0
7.x	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
8.x	No	No	No	Yes	Yes	Yes	Yes	Yes	Yes
8.1.2+ Secure	No	No	No	No	No	Yes	Yes	Yes	Yes
10.x	No	No	No	No	No	No	No	No	Yes

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