I like that it is easy to use with our clients, which allows us quick access for them as well! The interface could be improved by adding more colors or better font sizes (and maybe even changing some of those text boxes).
But overall this program has been great so far - we have not encountered any problems yet when using web call server in conjunction w/ OCS software from other vendors such as VONAGE etc.. We are able tp create calls via email address through ocs client without having users log into their accounts first before being allowed onto line!!