Can you tell us easy-to-use functions of U2000 you want to know earlier?
For example:
this is a good example for easy-to-use functions:
[V8 DOC SET] Quick Navigation to NE Features http://support.huawei.com/huaweiconnect/thread-28593-1-1.html
Posted by SHAMS at 2015-09-17 19:59 Need to know about Fault-> Ip network troubleshooting