Dear Experts, I am configuring SMS gateway for guest users to access the Internet, our firewall firmware is on SFOS 19.5.2 MR-2-Build624, i am getting error "Response string:ERR_MOBILE"while Testing the connection please find the screenshot. can any…

i want to configure Guest portal with SMS , please guide me how to do it? how it will work? SFOS 19.5.2 MR-2-Build624