INTRODUCTION This document defines a P25 Conformance Profile (PCP) for advanced conventional operation@ which is further subdivided into functional groupings and items. Each PCP item devolves to a set of procedures (detailed later in this document) that define reference-signaling sequences for the identified scenarios. A manufacturer may choose to conform with all or part of this Conformance profile. It is anticipated that@ for the basic Conformance Profile@ a manufacturer would wish to cover most of the PCP items@ while more advanced Conformance Profiles@ like this one@ may be addressed in a less comprehensive manner.