The GSM-to-Ethernet (G2S) bridge is a ready-to-use protocol converter that is intended for extending the communications reach of an existing device with a serial interface (RS232/RS485) over a wireless GSM network. For example for out-in-the-field installations of the device.
The configuration consists of an OEM device that has an serial interface (RS485/RS232) and PC that communicates with the OEM device using this interface. The protocol used for serial communications is usually an OEM specific protocol. Which may or may not be encapsulated in TCP/IP packets. (i.e. using SLIP or PPP as a carrier protocol for the OEM data)
A dedicated OEM application that understands this OEM specific protocol runs on the PC.
The OEM application may or may not include support for remote device connections with a PSTN modem or over an intranet/internet using TCP/IP (socket interface)
Figure 1: Original (local) configuration
Example configurations for remote access with G2S bridge
Figure 2: Dial-in access with analog modem (GSM data)
Figure 3: Mobile dial-in access with laptop and GSM phone (GSM data)
Figure 4: Direct access via public internet (GPRS)
Note that direct access via the public internet as in figure 4 requires GPRS for wireless communications over a GSM network. GSM data will not do. It also requires support for TCP/IP (socket interface) in the OEM application at the PC side.
With the G2S bridge the serial data protocol is ‘bridged’ transparently between the PC and the OEM device, the GSM network is used as a transport channel to get the data to/from the OEM device.
The G2S bridge supports both GSM data and GPRS as a carrier for the serial communications over a GSM network.
Quick comparison GSM data and GPRS
In general GPRS is usually more cost-effective than GSM data if the device is to accessed frequently (> few times per day) and/or if the amount of data to be transferred is big (> few KB per visit). Contact your GSM provider for more details.
Modem emulation and support for SLIP/PPP as carrier protocol at serial side are optional.
Note that the G2S bridge is intended user-initiated for dial-in connections to the device. If device-initiated dial-out connections are (also) required then customizations to G2E software may be required. In that case contact us for more information.
All software is pre-installed on flash disk of the NCS0402.
Click here for latest datasheet.
Click here to contact us for more information about the G2S bridge.
Necoso, Het Kasteel 315, 7325 PE Apeldoorn, The Netherlands