I was told that the FXS ports on my AudioCodes MP-118 are useless is these correct. Another words I can't connect my analog phones to them? If these FXS ports aren't supported who do you support. I am currently using SPA-3000's but was hoping to get rid of them by using the 4 FXS ports on MP-118. Is this possible and if not what do you suggest. Thanks any comments.