How to avoid SIP messages and RTP flows being banned by Internet Service Provider?
Because VoIP is not allowed by some Internet Service Providers here.So I hop NN4500 can do something to avoid SIP messages and RTP flows being banned by internet service providers.
can nn4500 configured to encrypt SIP and RTP flows during transformaton so Internet Service Provider won't filter SIP and RTP flows out. and these messages can be decrypted by SIP endpoints .