4G Industrial Serial Modems supports controlling of industrial M2M devices and distant checking. Data get together over 4G for the real-time administration of electrical metering, irrigation, agriculture, safety, marketing or related applications with RS-232 serial data connection. So, with RS232 connectivity, TCP/IP and plus SMS modem developed so these can vary. It meets with many legacy submissions or applications. This has simulations with serial to server functionality and TCP Server that can replace CSD Circuit Switch Data (CSD) applications. It gives two modes LAN mode and WAN mode. We can choose one mode on requirements.