can't call IP address after register to SC

hello sir:

this is the Security policy for SC ,it will disable the unknown call by default ,if you really need it , you can enable it in SC page;
login the SMC page ,select devices--- switch center---selcet the SC you use---edit---enable the unknown call
hope it can help you

Hello, bro! Hoping you are fine. For this issue, it is always because of that the alow unknown call feature is disabled in the SC, this feature is default setting to disable, so you need to enable it and then have a try. If you still have issue after enable it, please collect the signal diagnosis and contact huawei local support team for help.

you answer all the questions related to SIP and IPphones
professional

bro,
Hoping you are fine.The 2# Reply to your question in detail, I hope his answer is helpful to you, if you have any other questions, you can also consult us by posting.Thanks.