VEGA INSYS Modem GPRS 5.0 - Manual (Page 34)

Connection INSYS GPRS 5.0 serial
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5.2 TCP Transparent (GPRS Modem Emulation)
In this mode, user data is transmitted transparently via the serial interface and in
TCP/IP packets via the GSM/GPRS network. The INSYS GPRS 5.0 serial will act like a
conventional modem at the serial interface.
The remote terminal for this connection type receives the TCP/IP data and evalu-
ates them directly, or has a virtual COM port driver (see Chap. 6.10 - Virtual Com
Port -) to unpack it.
5.2.1.1 Outgoing TCP connections
The INSYS GPRS 5.0 serial will address the remote terminal either directly via the
IP address (e.g. 212.77.161.1) or via the domain name (e.g. www.insys-tec.de).
5.2.1.2 Incoming TCP connections
The INSYS GPRS 5.0 serial is addressed via its IP address. Its IP address must be
routable. The IP address may be static or dynamic. For dynamic IP addresses, the
INSYS GPRS 5.0 serial supports the function to communicate the IP address it re-
ceived during the dial-up into the GPRS network to a remote terminal (see Chap-
ter VCOM).
The GPRS modem emulation - TCP transparent - can be set with the help of the
HSComm. Click the according tab.
5.2.2 Defaults
For the operation within the GPRS network an APN (Access Point Name) must be
selected.
In HSComm, we prepared numerous European APNs for selection.