求翻译：主要负担计算机网络、数字程控交换，安全技术防范、门禁与楼宇对讲、远程视频会议、卫星电视、无线电通讯、GPS卫星定位系统以及办公自动化、LED电子显示屏与彩色多功能一体机等通信设备的建設與維護。是什么意思？

正在翻译，请等待...

Major burden on computer networks, digital telephone switching, security prevention, control and intercom, remote video conferencing, satellite TV, radio communication, GPS satellite positioning systems and office automation, LED electronic display and color multifunction communication devices such

The main burden computer network, the numeral stored program controlled switching, the safety work guard, the entrance guard and the building to speak, the long-distance video frequency conference, the satellite TV, the wireless communication, the GPS satellite positioning system as well as the offi

Main burden of computer networks, digital stored program control Exchange, security and protection, access control and building intercom, remote video conferencing, satellite TV, radio, GPS satellite positioning systems and Office Automation, LED electronic display and color MFP maintain constructio

正在翻译，请等待...