SIMATIC S7, TS Module Modem for SIMATIC Teleservice, connection to TS Adapter IE. Power supply via TS Adapter SIMATIC S7, TS Module Modem for SIMATIC Teleservice, connection to TS Adapter IE. Power supply via TS Adapter SIMATIC S7-1200 Basic Controller - flexible thanks to a wide range of communication options. If simple, inexpensive and secure teleservice and remote maintenance are required, a TeleService Adapter IE is recommended in conjunction with a TS module for connection to the analog, ISDN or GSM/GPRS network or with an RS232 interface for communication via an external modem. In such a configuration, remote maintenance via the telephone network, sending emails and Internet access are possible.