ETSI TS 102 901规定了IMS网络间接口的互操作性测试描述（TDs） （II-NNI）基于RCS V5的丰富通信套件（RCS）相关服务的互操作性测试。1. 高级通信服务和客户规范[12]以及相关背书文件[13]、[14]， [15] ，[16]和[17]。第3阶段会话启动协议（SIP）和会话描述协议（SDP）标准， TS 124 229[1]和IMS网络间接口TS 129 165[6]定义了 RCS服务是基于。TDs是根据测试目的（TPs）和测试套件结构（TSS）规定的 见TS 186 011-1[2]。本文件中作为TDs一部分的TP片段使用 ES202 553的TPLan符号[5]。TDs是基于中描述的测试规范框架编写的 TS 102 351[3]和TS 102 237-1[4]中定义的互操作性测试方法，即互操作性测试 具有一致性关系。

ETSI TS 102 901 specifies interoperability Test Descriptions (TDs) for Inter-IMS Network to Network Interface (II-NNI) interoperability testing for the Rich Communication Suite (RCS) related services based on RCS V5.1 Advanced Communications Services and Client Specification [12] and the related endorsement documents [13], [14], [15], [16] and [17]. The Stage 3 Session Initiation Protocol (SIP) and Session Description Protocol (SDP) standard, TS 124 229 [1] and Inter-IMS Network to Network Interface, TS 129 165 [6] define the functionalities on which the RCS services are based. TDs have been specified on the basis of the Test Purposes (TPs) and Test Suite Structure (TSS) presented in TS 186 011-1 [2]. TP fragments presented in the present document as part of TDs are defined using the TPLan notation of ES 202 553 [5]. TDs have been written based on the test specification framework described in TS 102 351 [3] and the interoperability testing methodology defined in TS 102 237-1 [4], i.e. interoperability testing with a conformance relation.