Error Cisco CallManager ccm: 40667: Feb 14 20:50:55.409 UTC : %CCM_CALLMANAGER-CALLMANAGER-3-DeviceTypeMismatch: Device type mismatch. Name of device.:ATA235E190E8601 Device type.:12 Database device type:255 Cluster ID:StandAloneCluster Node ID:ctcrdgpbx1
It shows that the ATA is trying to register phone port # 2, which might not be configured and registered to the call manager, but it will always attempt to register,since the SID1 field has a 'dot', which forces the ATA to send registration request periodically.
Please to check this field and make sure it is set to '0'.To disable this field, you require gaining access to the ATA page via web, for example: