Bob, VK6ZGN who operates the AllStar Link on VK6RLM sends us this information:
To connect to another AllStar node, use the Link Connect (*3) plus the node number.
For example, to connect to node 2000, use *32000. To Disconnect from a node, use the Link Disconnect (*1) plus the node number.
For instance, if you want to connect to Echolink node 1234 on the AllStar system you would dial *3 followed by 3001234. If you have a 6 digit Echolink node number 123456, you would dial *3 followed by 3123456.
To disconnect it is the same as above but instead of the *3 you would use the *1.
For users originating from an Echolink node using Echolink supplied software, nothing changes for them, they just dial the Echolink node number assigned to this system “909122” (VK6ZGN-L) and it should connect!
web site that shows the state of a few AllStar node's and shows what nodes are connected. Also on that site there is a link called "Bubble Chart" this shows a graphical representation of the connected nodes.
It can be very interesting seeing how the various site are connected.