Fiche Technique:

Description:

SOHO/SMB telephony system
Hosted service
FAX terminal
IVR system

Interface 

2 X RJ45 ports
1 X Power port
1 GSM Antennas
4 FXO Ports
1 SIM Cards Interface

Hardware

CPU: 400MHz Blackfin 533 Chip
Four GSM modules interface
NAND flash 1G
SDRAM 64M

System

Open Source uClinux
asterisk 1.4.x