The Etross 4G LTE Gateway ETS16-512 is a high density SMS gateway designed for large scale bulk SMS applications. It features 16 concurrent ports and supports up to 512 SIM cards (32 SIMs per port) with advanced SIM rotation to prevent carrier blocking. Key capabilities include IMEI modification, SIM hot plug, USSD balance query, and automated task scheduling via WEB GUI. The gateway provides HTTP and SMPP APIs for easy integration with external platforms, enabling automated sending of verification codes, marketing messages, and transactional alerts. It works on 4G LTE (with backward compatibility to 3G/GSM) and supports voice message delivery on 4G modules. The device includes a user friendly web interface for configuration and real time monitoring. It is widely used by telecom operators, system integrators, and enterprises in over 80 countries. The ETS16-512 is also available with customized frequency bands for global deployment, including UK/EU bands B1/B3/B5/B7/B8/B20.
