16-Port Modem Pool for 4G LTE Connectivity with Quectel EC21-E Module

For those looking for an industrial-grade modem, the OSTENT UMTS/HSPA+/LTE 4G Modem Pool is a great option. The module used is the Quectel EC21-E, and there are 16 ports available for connection. The ports have USB 2.0 interfaces and a transfer rate of 480Mbps. Control is done through USB using AT commands, and the port is emulated to COM (serial/RS232) port. This modem can send SMS and MMS in bulk and is compatible with software that supports AT commands, such as Windows hyper terminal, SMS Studio, SMS Caster, and SMS deliverer. It supports Windows 2000/XP/7/8/8.1/10 or later versions (32 & 64-bit), Linux, Mac OS X, and Android operating systems.

Before purchasing this modem, ensure that your region is covered by the supported networks of this modem. Note that this modem does not come with software nor API pack, so users need to use their software or program to control it via AT commands by USB port. Also, this is a professional item, so if you’re unsure how to use it, inquire before purchasing.

The Quectel EC21-E module features FDD LTE bands B1/B3/B5/B7/B8/B20 (800/850/900/1800/2100/2600), WCDMA bands B1/B5/B8 (850/900/2100), and GSM bands 900/1800. It supports LTE Version 3GPP E-UTRA Release 11 and bandwidths of 1.4/3/5/10/15/20MHz. It has an antenna that supports Rx-diversity and can operate at temperatures between -40°C to +85°C, supporting control via AT Commands with 3GPP TS27.007 and enhanced AT Commands.

For data, the modem supports LTE-FDD with a maximum of 10Mbps (DL) and 5Mbps (UL), DC-HSPA+ with a maximum of 42Mbps (DL) and 5.76Mbps (UL), and UMTS with a maximum of 384Kbps (DL) and 384Kbps (UL). It also supports voice features such as speech codec modes (HR, FR, EFR, AMR, AMR-WB) with echo cancellation and noise reduction, eCall (emergency services), and VoLTE (Voice over LTE) for digital audio (optional). Protocols include TCP/UDP/PPP/FTP*/HTTP*/SMTP*/MMS*/NTP/PING/DTMF*/FILE*/CMUX*/QMI.

The package includes the modem pool with 16 ports, a data line (USB port), a power cable, and 16 DB antennae.