Dear Mr. Freundlich, In H.225.0V3, section 7.3.9, the Cause IE is marked CM, and the associated note implies that this IE can actually be included (see table 12/H.225.0). But the length of one octet allows only an empty IE, which is meaningless. Is this an error or intentional? In any case it is confusing and should be fixed at the Red Bank meeting. Ernst Horvath Siemens AG