We currently own a VS-100 and recently purchased a VS-4000. On the VS4000 Skype TX application, when I try to add the VS-100 channel (CH 5) it askes me to "Enter your credentials" with a user name and password and displays the Domain as the IP address of the VS-100 appliance. What would the user name and password be? I've tried everything and even null and it will not connect. Thanks.