4452d530_able___FreeSWITCH___Confluence__Description
[ITU-T Q.850 Code] 95 [Enumeration] INVALID_MSG_UNSPECIFIED [Cause] invalid message, unspecified [Q.850] [Description] 
This cause is used to report an invalid message event only when no other cause in the invalid message class applies.
Hangup Cause Code Table - FreeSWITCH - Confluence
Description