The default settings for this is 1 GSM. About IP4G The IP4G is a SIP-based IP voice switch with a small embeded OS and rich GUI(Graphical User Interface), providing a powerful networking and corporate communication function. With it, users can quickly deploy an internal communication system for enterprise, as well as confirgurate convenientlyapplications and value-added services on IP PBX via its GUI, to fitenterprice\'s own verious demand.
Targeting for SOHO user and SMB market with an easy to use graphical interface, GSM IP PBX provides a cost-saving solution on their telecommunication/data needs.With these devices, company with branch offices in different countries can be easily combined together to work like a virtual single office through internet and GSM network.
Specifications
Hardware
CPU: 400MHz Blackfin 533 Chip Flash: 256 MB SDRAM: 128 MB LEDs x 17 Programmable Reset Button Module configuration
Slots for modules :4 GSM module: G01 Interface
2 X RJ45 ports 1 X Power port 4 X SIM card interface Power Input:DC 12V/2000 mA 
