Sj phone-call rejected when calling a mobile number
I am currently using an SJPhone or a softphone VOIP phone with Engine. I can connect and register without getting any issues. However, when I tried to make a call on a mobile phone or a land line number, I always get an error "Call Rejected: 400 Bad Request." I tried for few times now and even turn off and turn on the SJPhone repeatedly to no avail. What should I do to fix this?








