[Users] Polycom soundpoint ip 500

Hi, We have a polycom sound point ip 500, sip app ver 1.5 (from voip-info.org<http://voip-info.org>). It turns out that it won't display MESSAGE ... but it does receive them and it replies with a 200 OK. But no message on the screen or anywhere within the phone. The configuration has not been changed, it is pretty much the standard stuff that comes from voip-info.org <http://voip-info.org>. Anyone has ever came across the same problem? Regards, Cesc PS - Getting the sip software from polycom resellers is a mess ... well, i would say almost impossible. Next time we'll go for a costumer frendlier phone manufacturer i guess.