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What are TSC and IPT?
TSC and IPT are protocols which enable incoming and outgoing connections via GPRS by means of an external server.
TSC stands for TAINY Switching Center, and includes a proprietary protocol. It is employed in some environments for transmission of serial data via GPRS networks in order to avoid the problem of missing Availability of terminal devices in conventional GPRS networks. TSC was further developed as IPT (IP telemetry) to meet the DIN standard. The two protocols IPT and TSC both cover the same functional range to the farthest possible extent, however they are not compatible.
IPT operating mode
In order to be able to use the IPT protocol all participating devices must have the IPT protocol stack integrated. The following components are required:
Field device with IPT stack (in the drawing on the left, e.g. INSYS GPRS serial 5.0)
IPT server (switching center), a permanently available server on the Internet which tunnels all data within one IPT system
Control station computer with IPT stack or a second field device IPT stack
Immediately after the system is started the devices connect to the so-called switching center, which tunnels all connections. A device or a control station computer that tries to establish a connection to another device transmits this request to the switching center. This server then releases the tunnel to the desired device provided that the device is logged on. Subsequently, a quasi-transparent data communication may be run through the established tunnel