The GPT1800 provide universal flexibility and with simplified ease of use installation. This is the optimal solution to be used in areas and application where there is a need to optimize coast of calls. The GPT Family supports multiple interfaces, through which users can use multiple services.

The GPT Family has many distinctive and advanced competitive features. Some of these features are light weight, low power consumption; support polarity reversal, just to name a few. FSK and DTMF Caller ID, automatic call route, high gain antenna for poor signal areas.