Do you have any access list on this device blocking ftp?

I opened a case for this with VMWare once and they said this message is not an error, it's only there to let you know that this host is now patched against this vulnerability issue, you can find more information in this kb article.https://kb.vmware.c...

It could be assoicated with the DTMF Relay. Check your voip dial peer in VG if you have configured dtmf-relay h245-alphanumeric.  HTHPlease rate helpful posts.VJ

Please follow instructions in this link https://help.webex.com/en-us/WBX9000008851/Error-Setup-was-Unsuccessful-Please-try-again-Error-23-When-Starting-or-Joining-a-Meeting  

Check your Line Group configuration if you still have the other two DN's added under "Selected DN/Route Partition".