Hi to everyone, we're new to this product and so execuse us for the incompetence. We're testing the free edition with the objective to resell the poduct to our customers. we've bought, like reccomended in the 3cx site, one ISDN GATEWAY PATTON 4634 and some VOIP Phones GRANDSTREAM GXP-2000. We follow the configuration guides and all working except for one thing : when an external ( source ISDN ) call is place on HOLD the music is not the one we choose in the 3CX software but a woman voices the says "WAIT PLEASE". If the call is internal ( from one extension to another ) the HOLD music is correct. Any ideas ?