VEGA MoRoS GPRS 1.3 - Manual (Page 44)

Functions MoRoS GPRS 1.3
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12.1.4 Setting up the Serial Ethernet Gateway
The serial Ethernet gateway enables the addressing of serial end devices from the local
network of the MoRoS GPRS 1.3 or from a remote network, which are connected to the
serial interface of the MoRoS GPRS 1.3. The data which is sent to a configurable network
port of the MoRoS GPRS 1.3 is output at the serial interface of the MoRoS GPRS 1.3. In the
variant Pro, the serial interface can also be used to connect a redundant communication
device. In this case, the interface can not be used as serial Ethernet gateway.
Configuration with the web interface
To set up the serial Ethernet gateway, activate the checkbox "Activate serial
Ethernet gateway" in the menu "Basic settings" on the page "Serial Ethernet
gateway" (Figure 9, page 31 above, position 1).
The port, which the serial Ethernet gateway uses to accept a TCP connection,
is entered in the entry field "Port" (Figure 9, page 31 above, position 6).
The speed of the serial interface is set in the entry field "Speed (in Bit/s)"
(Figure 9, page 31 above, position 2).
The data flow control (RTS/CTS handshake) is set in the entry field "Flow con-
trol" (Figure 9, page 31 above, position 3). If the connected serial device does
not support the RTS/CTS lines, you must deactivate the flow control.
The data format of the serial interface is set in the entry field "Data bits"
(Figure 9, page 31 above, position 9).
To use the control lines DCD and DTR, activate the checkbox "Use control
lines" (Figure 9, page 31 above, position 8).
To reset the control lines after the connection is terminated, activate the
checkbox "Reset control lines after the connection was terminated" (Figure 9,
page 31 above, position 4).
To automatically terminate a TCP connection, if no data transfer occurs any
more, set a value in seconds in the entry field "Timeout" (Figure 9, page 31
above, position 5). If no data transfer occurs for the time set, the TCP connec-
tion, which was established by a computer to the serial Ethernet gateway, is
closed. To ensure that the connection is never terminated, set the value Zero.
The value Zero is the default setting.
Save the settings by clicking "OK" (Figure 9, page 31 above, position 7).
12.2 DNS
12.2.1 Setting up DNS Forwarding
You may use the MoRoS GPRS 1.3 as DNS relay server. When the MoRoS GPRS 1.3 is con-
figured as DNS server at the locally connected network devices, the MoRoS GPRS 1.3 will
either forward the DNS queries to the previously configured DNS servers in the Internet,
or will use the IP addresses sent during the PPP connection setup as DNS server.
Configuration with the web interface
To make sure that the MoRoS GPRS 1.3 uses the DNS servers sent during the