Planet - IPX-21GS - 4-Port GSM Module for IPX-2100 / IPX-2200 / IPX-2500

Product Overview

The Planet IPX-21GS is a 4-port GSM expansion module designed for IPX-2100, IPX-2200, and IPX-2500 IP PBX systems, featuring the quad-band SIM900 engine with support for 850/900/1800/1900 MHz frequencies and global auto-search capability. It includes 4 internal SIM slots for multi-carrier redundancy and 4 SMA antenna connectors on the faceplate, complete with high-gain omnidirectional antennas for reliable cellular connectivity.

Key Configuration

• Ports: 4 × GSM channels (quad-band).
• Frequency bands: GSM850, EGSM900, DCS1800, PCS1900 (auto-search).
• SIM slots: 4 × internally accessible.
• RF interface: 4 × SMA antenna connectors (antennas included).
• Compatibility: IPX-2100, IPX-2200, IPX-2500 IP PBX systems.
• Transmitting power: Class 4 (2W) at 850/900 MHz, Class 1 (1W) at 1800/1900 MHz.

Key Features

The IPX-21GS is a GSM expansion module equipped with the quad-band SIM900 engine (850/900/1800/1900 MHz) for global market coverage, with auto-search capability and GSM Phase 2/2+ compliance. It provides 4 cellular channels, each supporting a separate SIM card for multi-carrier redundancy or load balancing, and features Class 4 (2W) output power for reliable signal strength in fringe coverage areas.

Technical Context

The module features power-saving SLEEP mode with typical 1.5mA consumption (BS-PA-MFRMS=5) and operates on a 3.4V–4.5V single supply. It installs as a hardware expansion module into Planet IPX-2100, IPX-2200, or IPX-2500 IP PBX slots, with four internal SIM slots (SIM cards not included) and power supplied via the host IP PBX system with no external power required.

Installation Notes

The module includes 4 SMA antenna connectors on its faceplate with included high-gain omnidirectional antennas for easy installation, along with LED indicators per port for status monitoring. It operates across a wide temperature range of -30°C to 80°C, and supports voice gateway interface integration via a hardware expansion blade for PSTN fallback, GSM call routing, and remote site connectivity over mobile networks.