With jQuery post you can define a callback function which is executed when the data is returned:
$.post('/callcenter/admin/postContacts', data, function(returnedData) {
// do something here with the returnedData
console.log(returnedData);
});
The data
should be in the form:
{name: 'value', anotherName: 'another value'}
which equates to the post names on the PHP end accessible in plain PHP like this:
echo $_POST['name']; # prints "value"
echo $_POST['anotherName']; # print "another value"