Siemens CP 1243-8 IRC Operating Instructions Manual page 13

● Mobile wireless networks
– GSM/GPRS (2G)
– UMTS (3G)
– LTE
● IP-based wireless networks
For information on connecting the CP to various network types, refer to the section
Connection to various network types (Page 21).
Transmission protocols
Simple communication via the mobile wireless network (GSM) and the Internet can be
achieved with the MSC transmission protocol. If the security requirements are higher, the
transmission protocols (OSI layer 3) listed below can be used.
● MSC
Simple Internet communication via the Internet (DSL)
The MSC protocol supports authentication of the communications partners and simple
encryption of data. A user name and a password are included in the encryption. An MSC
tunnel is established between the MSC station and MSC master station.
● MSCsec
Secure Internet communication using:
– Internet (DSL)
– Mobile wireless network (GSM) + Internet (DSL)
MSCsec supports authentication of the communications partners and data encryption
with a user name and password. In addition to this, the shared automatically generated
key is renewed between the communications partners at configurable intervals.
● IPsec (VPN)
Highly secure communication via mobile wireless and the Internet (DSL).
Communication via a mobile wireless network combined with the Internet is made
possible by a router SCALANCE M. The SCALANCE M product series provides various
VPN routers with IPsec and encryption software and their own firewall.
For a description of the configurable Security functions, refer to the section Security
functions (Page 89).
You will find an overview of the possible transmission options in the section Connection to
various network types (Page 21).
CP 1243-8 IRC
Operating Instructions, 06/2015, C79000-G8976-C385-01
With 2.5G router SCALANCE M874-2
With 3G router SCALANCE M874-3
With router SCALANCE M876-4
or
Application and properties
1.2 Communications services
13