Network Security service center is using a security system to receive protected areas’ security information and take action to stop crimes, prevent disaster. The security information transportation way is the core part of the security system.

PSTN telephone network is the most popular security service center network. But with development of digital communication technology, security system is developed as well with video alarm etc. PSTN network is with difficulty to transport the security signals fast and reliable.

The security service upgrade is to enable the security service with multiple data transportation network such as GSM/GPRS/TCP/IP and video alarm. Without any replacement, but with add-on of video alarm server and security management, GSM/GPRS communication module, the security service center can be upgraded.

For CCTV surveillance monitor service, with add-on of Video alarm EAVS security equipment, the security system can be updated to alarm and surveillance monitor system as well. All old security equipment are keeps working well.