1)4 to 32 FXO/FXS; 2)1 or 2 E1; 3)Signaling support: SS7, ISDN PRI, R2, Q.SIG, V5.2; 4)PBX ... voice, meeting and Fax pass through etc..Product specification:* Provide 32 port FXS or FXO,can be hardware configured with plug ... 703RJ45Ethernet port10/100Base-T,IEEE 802.3RJ45ConsoleRS232RJ45Analog lineseach port with 4 linesRJ45ItemSpecificationInput voltage-48V DC or 100~240V ACPower60WDimensionW*D*H480MM ...