DLINK ASTERISK BASED IP PBX (PRIVATE TELEPHONE NETWORK), BUILT-IN EXPANSION MODULE (8010),300 USER SUPPORT (60 CONCURRENT CALLS),250GB HDD,4X EXPANSION SLOTS FOR ANALOG/PRI INTERFACE
DLINK ASTERISK BASED IP PBX (PRIVATE TELEPHONE NETWORK), UP TO 30 USERS (10 CONCURRENT CALLS) BUILT-IN 2FXO PORTS