涵盖CEC授权的第一步；ETR的开发包括:接入网和核心网之间接口的标准化要求；以V5系列接口规范分析为基础；确定所需的其他规范；分析Q3规范，作为管理标准的基础，以完成上述工作。

Covers step 1 of the CEC mandate; the development of an ETR covering: standardization requirements for interfaces between an access network and a core network; analysis of V5 series interface specifications as a basis; identification of additional specifications required; analysis of Q3 specifications as a basisi for management standards to complete the above.