perl -lne 'print $1 if(/Device description ([^\]]*)\]/)'
cGVybCAtbG5lICdwcmludCAkMSBpZigvRGV2aWNlIGRlc2NyaXB0aW9uIChbXlxdXSopXF0vKSc=
VUNfQ0FMTE1BTkFHRVIgW0RldmljZSBuYW1lIGFiY2RlXVtEZXZpY2UgSVAgYWRkcmVzcyAxLjEuMS4xXVtQcm90b2NvbCBTSVBdW0RldmljZSB0eXBlIDU1MF1bRGV2aWNlIGRlc2NyaXB0aW9uIDk1ODAgLSBDb3JkbGVzc11bUmVhc29uIENvZGUgMTNdW0lQQWRkcmVzc0F0dHJpYnV0ZXMgMF1bVU5LTk9XTl9QQVJBTU5BTUU6TGFzdFNpZ25hbFJlY2Vp
UC_CALLMANAGER [Device name abcde][Device IP address 1.1.1.1][Protocol SIP][Device type 550][Device description 9580 - Cordless][Reason Code 13][IPAddressAttributes 0][UNKNOWN_PARAMNAME:LastSignalRecei