I'm sure my friends who like to surf ria must have encountered Error 619: containing a message like this: A Connection to the remote computer Could not be established, so the port used for this connection was closed. Well because this error does not occur only in terntentu modem or a particular provider, which means it could happen to any type of modem and any provider such as Telkomsel, XL, Axis, Three, Smart, Indosat etc. Incidentally, I often run into problems like this, especially when I'm using Telkomsel's sympathies or the U.S.. And for those of you who are experiencing this problem, please refer to either a good article on solution to overcome the error 619: A Connection to the remote computer Could not be established, so the port used for this connection was closed. Now we start from the possibility of why an error like this could happen. For Error 619 there are only four possible causes, in antarnya: