My Fanvil VoIP phone worked previously on my D-link DIR 825, but after a while it showed sip registered failed. What can be the problem??? As no settings changed on my side.
I made no changes on my side or the VoIP phone
Can it be that the router did an update and becuase of that my sip account does not work???
Sip ALG is turned off.
Please help me out.