The Elastix MiniUCS is a fully featured Unified Communication PBX in a small package. Weighing under 2 lbs, the MiniUCS will support about 50 SIP endpoints, up to 32 concurrent calls, and will allow up to 4 FXO or FXS ports for analog connectivity.
The Elastix ELX-025 is a fully featured Unified Communication PBX in a 1U rackmountable chassis which will support up to 100 extensions and 50 concurrent calls. Choose your configuration by determining if and how you will be connecting to the PSTN.
The Elastix NLX4000 is a 1.5U IP PBX which will support up to 300 phones and up to 120 concurrent calls. The Elastix NLX4000 has 2 open PCIe slots which support a variety of different analog and digital port configurations to support what you want to connect.