Requirements For Gsm Mode - Siemens SINAUT ST7 System Manual

SINAUT ST7 provides two options for data transmission over mobile phone:
● MODEM MD720
– Data transmission on an "as necessary" basis by establishing a dial-up connection via
– Data transmission with GPRS in a mobile network
With both transmission methods, the transmission of SMS messages to standby
personnel is also possible. Charges are based on the number of sent SMS messages.
For the manual see /3/ (Page 130).
● SCALANCE M870 (M874/M876)
With a 2.5G or 3G router, you can establish a permanent connection between the station
and the control center via mobile wireless. Data can be transmitted immediately at any
time.
Although permanently online, only the volume of transmitted data is charged.
To communicate with remote devices, the SCALANCE M870 establishes a VPN tunnel
and encrypts according to the IPsec protocol.
For the manual see /4/ (Page 130).
1.5.2

Requirements for GSM mode

The following requirements must be met to use the mobile wireless router:
● A subscriber contract with GSM network operator that supports GPRS
● SIM card with activation of the GPRS service
IP address of the partner
To allow the router to establish a VPN connection actively, the partner must have a fixed IP
address.
Many Internet service providers, however, assign the IP addresses dynamically; in other
words, the IP addresses of the computers or networks with access to the Internet change. A
fixed IP address can be obtained in the following ways:
● Fixed IP address with dedicated line to the GPRS provider
The partner is connected directly to the GPRS provider over a leased dedicated line. The
network provider then normally assigns a fixed IP address.
● Fixed IP address of the Internet service provider
The partner is available over the Internet and a fixed IP address has been assigned to it
by the Internet service provider. This can be applied for with some providers.
SINAUT ST7 - Volume 1
System Manual, 11/2018, C79000-G8976-C178-12
a mobile network (CSD: Circuit Switched Data)
Dial-up connections are charged on a pay-by-time basis.
Authentication and encryption are based on the MSC protocol. Charges are generally
on a pay-by-volume basis.
The SINAUT ST7 system
1.5 Mobile wireless modems and routers
25