Why Linkus mobile gets calls from 'sipvicious'

[Issue Description]

The Linkus mobile gets calls and the caller name displays 'sipvicious'. 

[Applicable Models]

Linkus Mobile client

[Solution]

The call isn't through the Yeastar PBX, it is more likely the SIP attack to the Linkus client directly. 

Please try to log in to the Linkus client and go to Me->Settings->Advanced, and enable the 'Restrict External IP', it will prevent the "sipvicious" call.