Voice over IP (VOIP)
IP-04 PBX Appliance @ $ 1,295
AsteriskNOW PBX 
Four Analog (FXO/FXS) modules
Four AT-530P SIP/IAX2 Phone
Trendnet TPE-S44 PoE switch

configured ready to use

Asterisk  IP PBX  $ 1
,400
Intel CPU DDR-2 512MB RAM
FreePBX GUI
80GB SATA
AX-400Pwith 4 FXO ports (4 POTS Line)
Four AT-530P SIP/IAX2 Phones
Trendnet TPE-S44 with 4 port PoE Switch
Digium TDM2400
ATCOM AX-400P
4 FXO ports @ $CALL
GrandStream GXP-2020 VOIP Phone
TPE-S88 10/100 PoE Switch
HOME
ATCOM AT-530P @ $ CALL
ATCOM IP-04  Asterisk Appliance with Four Analog Ports