图像业务 meaning in Chinese

presentation service

In our country , sdh network will also be used to transmit digital tv signal . so the facility to connect the ds3 signal and sdh network is needful . a way to design the ds3 module is gived out in this dissertation
Ds3信号主要用于传送图像业务,我国即将普及的数字电视网要使用sdh网络运载视频信息,因此需要设备桥接ds3信号和sdh网络,本论文研究的ds3模块为这类设备的开发提供了借鉴。