Siemens SIMATIC S7-1200 CP 1243-8 IRC Operating Instructions Manual page 218

STEP 7 V5 configuration of the proxy
D.2 Special features of the PROXY CP1243-8 IRC
TS modules in the "Interfaces" tab
TS modules are used to connect the serial interface of the CP to dial-up networks that are
also configured in STEP 7 V5 in the "Interfaces" tab of the Properties dialog of the proxy.
Figure D-2
The following figure shows drop-down list for selecting the modem type.
Figure D-3
The following entries are available for the TS modules:
● TS Module GSM
Connection to a GSM network
● TS Module ISDN
Connection to an ISDN network
218
Properties dialog, "Interfaces" tab. WAN interface connected to dialup network.
Selectable modem types of a WAN interface with a connection to a dial-up network
Operating Instructions, 02/2018, C79000-G8976-C385-03
CP 1243-8 IRC