$().SPServices({
        operation: "GetListItems",
        async: false,
        webURL: "http://sitecollection.com/",
        listName: "TestList",
        CAMLViewFields: "<ViewFields><FieldRef Name='Title' /></ViewFields>",
        CAMLRowLimit: 0,
        completefunc: function(xData, Status) {
            window.alert(Status);
        }
});