Yeastar PBX Phone System
4G SIM Card & SIP over 4G LTE Solution
![4G LTE module](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/00.png?resize=736%2C373&ssl=1)
Yeastar 4G LTE Module provides 4G cellular data on SIM card, making the 4G LTE become the primary Internet connection for P-Series Phone System and S-Series VoIP PBX. Supporting 3G/4G network standard, the 4G capable Yeastar PBX can register SIP trunks and make SIP calls with high speed built-in data. It is ideal for business needs like temporary locations, mobile offices, and places where fixed-line broadband is not available.
![4G solution for Branch Offices](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/page-2-1.png?resize=219%2C212&ssl=1)
![4G solution for Temporary Offices](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/page-2-3.png?resize=212%2C212&ssl=1)
![4G solution for Remote Area](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/page-2-2.png?resize=210%2C212&ssl=1)
4G LTE as the primary Internet connection* for P-Series Phone System & S-Series VoIP PBX
Enable 4G cellular data on SIM card with 4G LTE Module and use 4G LTE as the primary Internet connection for P-Series Phone System and S-Series VoIP PBX. It is suitable for temporary locations, mobile offices, and places where fixed-line broadband is not available.
*Please note that 4G LTE module cannot be used as a 4G router, and for S-Series the 4G LTE data feature is only supported on the hardware version V2.
![primary internet connection](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/page-3.png?resize=728%2C345&ssl=1)
Place the phone call over LTE connection, you can expect faster voice connection, high-definition call quality and other benefits that VoLTE brings to companies.
![Voice over LTE](https://i0.wp.com/www.yeastar.com/wp-content/uploads/2017/07/page-5.png?resize=608%2C459&ssl=1)
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