J2EE structure is applied in the background based on TMN criterion, and VMS background comprises Management Application Function (MAF), Work Station Function (WSF) and Element Management Function (EMF).

• 版本管理后台在TMN规范的基础上采用J2EE架构,并分为管理应用功能(MAF)、工作站功能(WSF)、网元管理功能(EMF)三部分。