The Yeastar 4G LTE Module integrates mobile connectivity directly into your Yeastar P-Series PBX System. By utilising the 3G/4G network, this module provides a reliable link for voice calls and data transmission. It serves as a primary connection in areas lacking fixed-line infrastructure or as an essential failover link to maintain communication during network outages. The module supports Voice over LTE (VoLTE) for clear call quality and includes full SMS functionality, enabling the sending and receiving of text messages through the PBX.