My Grandstream HT701 will not register on my VoIP provider Vibecom. They have given me the correct STUN, proxy and outbound proxy settings and UserID/PW, and I have no problems with my 3CX client on my iPhone running on my same home network.
My HT701 is plugged into my Linksys WRT54G router, my broadband is Vodafone cable (ex TelstraClear).
Any thoughts on whether I need to do anything inside my Linksys? Could I be "double Natted"? Is it possible that Vodafone is blocking the registration?
I want to supply this to a customer on DSL, but was hoping to test it first
Hopefully this is bread-and-butter to someone out there!
Many thanks in anticipation.