Redirecting to another website? How?

Hi there guys, I was working on a project that required me to call a number. I saw that the speak block accepts commands in the form of and adventurously tried inserting:

9876543210 But of course, it didn't work. So I tried redirecting to another website which has the number and it is a tel anchor, but I am unable to do so. If you have solutions to any one of the issues: creating a tel anchor or redirecting to another webpage (it needn't be triggered by a click), please do share your solutions.