Asterisk powered IP-PBX with 4/8 FXS/FXO modules.

Hardware:
CPU: 400MHz Blackfin 532 Chip
Four analog (FXO/FXS) module interfaces.
NAND flash 256 M
SDRAM 64M

Features:
Built-in configurable Asterisk IP PBX
Voiptel GUI
High performance OSLEC (Open Source Line Echo Canceller)
Voice mail
Call forward, call waiting, call transfer
Call conference
Call queues
SIP trunking, IAX trunking
PSTN analog trunk (up to four PSTN trunks)
Flexible dial plan
Configurable IVR menu.
replaceable MMC/SD memory.

Interface:
1 X RJ45 port.
1 X power port.
4/8 RJ11 ports.
1 X MMC/SD slot.
4/8 FXO/FXS modules slots.

Accessories:
Power adaptor
RS232 interface module
FXO/FXS modules