The GW 180 is a Gateway GSM which has 4 GSM channels in the base and with the expansion board* can attain up to 8 channels. Besides its functions, it has a compact design (1U high), ideal for installation in a 19” rack. It was designed for companies which seek high audio quality and reduced costs in calls from landlines to cell phones, making full use of the mobile operator plan.
* Sold separately
Check the availability of this product in your country.