User guide
Table Of Contents
- 1 Security recommendations
- 2 CERTIFICATE OF CONFORMITY
- 3 Products identification
- 4 Data-sheet
- 5 Product overview
- 1 Dimensions
- 2 Connectors
- 3 Led indicators
- 4 DIP switches
- 5 Factory default push-button
- 6 Mounting the product on a DIN rail or removing it
- 7 Cooling
- 8 RS232 interface
- 9 RS485 interface
- 10 Digital input and output
- 11 Connecting the antenna
- 12 Installing the SIM card
- Set up steps
- 2 Connecting a PC to the router for configuration
- 3 Rebooting the router after parameters changes
- 4 Recovering the factory LAN IP address
- 5 Recovering the factory configuration
- 6 Restricting access to the administration server
- 7 Recovering a free access to the administration server
- 8 Factory configuration
- 9 LAN interface set up
- 10 UMTS – GSM-GPRS-3GDGE interface set up
- 11 Setting up the DynDNS service
- 12 Creating VPN connections between routers
- 13 Routing functions
- 14 Address and port translation
- 15 VRRP redundancy
- 16 Remote users connections service
- 17 Remote users connections
- 18 M2Me_Connect service
- 19 Users list
- 20 Firewall
- 21 Serial to IP gateway
- 22 USB to IP gateway
- 23 Advanced functions
- 1 Diagnostic menu
- 2 Saving the configuration to a file
- 3 Updating the firmware
- Signets Word
SET UP
22 USB to IP gateway
22.1 Principles
The RAS-3G-1201 provides a USB to IP gateway.
It is able to forward IP traffic from devices connected to the Ethernet network to a USB device.
On the USB interface, the RAS-3G-1201 behaves like a USB host and a PPP client.
The USB device connected to the RAS-3G-1201 USB interface must behave like a PPP server.
Destination IP address; main case
When a device, connected to the Ethernet network, needs to transmit data to the USB device, the
destination address of the IP frames which need to be transmitted to the USB device must be a
specific IP address assigned to the USB gateway of the RAS-3G (see the configuration below).
Destination IP address; Modbus case
If no specific IP address is assigned to the USB gateway (see below), the RAS-3G forwards only
modbus TCP traffic to the USB interface.
The destination IP address of the IP frames must be the LAN IP address of the RAS-3G router.
22.2 Configuration
Select the “Setup” menu and then the “USB” menu.
“Activate” checkbox :
Select the “Activate” checkbox.
“Use a specific IP address” checkbox :
If modbus TCP traffic only has to be forwarded to the USB device, that checkbox must not be
selected.
If other kinds of traffic have to be forwarded, that checkbox has to be selected.
“Specific IP address” parameter :
If modbus TCP traffic only has to be forwarded to the USB interface, no IP address has to be entered.
If other kinds of traffic have to be forwarded to the USB device, an additional IP address must be assigned the
RAS-3G.
That address belongs to the network connected to the LAN interface of the RAS-3G. It is the IP address of the
USB gateway.
It will be used as the destination IP address of the IP frames which must be forwarded to the USB device.
“Accept WAN traffic” checkbox:
It is necessary to select that checkbox it the PC is connected to the network connected to the WAN
interface.
It is not necessary to select that checkbox if the remote PC is connected to the RAS through a VPN.
UMTS GPRS EDGE router ref. RAS-3G User guide ref. 9020009-01
Page 79