Siemens CP 1242-7 GPRS V2 Operating Instructions Manual page 19

TeleService without a telecontrol server
The connection runs via the TeleService gateway.
The connection between the engineering station and the TeleService gateway can be local
via a LAN or via the Internet.
Figure 2-5
CP 1242-7 V2
Operating Instructions, 05/2014, C79000-G8976-C311-00
TeleService via GPRS in a configuration with TeleService gateway
Configuration examples
1.5 Requirements for operation
19