This Standard defines the operational testing procedures for communications between the Federal Alert Gateway and the Commercial Mobile Service Provider (CMSP) Gateway over the Reference Point ?C? Interface including any processing functionality within the FEMA-administered Commercial Mobile Alert Service (CMAS) entities and within the CMSP-administered CMAS entities that directly impact communications over the Reference Point ?C? Interface. Those operational testing procedures defined in J-STD-102 for the ?C? Interface serve as a companion document to J-STD-101, Joint ATIS/TIA CMAS Federal Alert Gateway to CMSP Gateway Interface Specification, which previously defined the Reference Point ?C? Interface. This document includes J-STD-102.a, approved December 2012, and ATIS-0700034, approved September 2017.