The Quadro IP PBX systems can be equipped with ISDN interfaces in place of FXO ports. The ISDN capable Quadro IP PBXs are very versatile offering user mode connectivity to ISDN S0 circuits for voice traffic. The 2Xi and 4Xi are both equipped with one S0 port, and the 16Xi is equipped with 3 S0 ports.

Quadro2xi

Providing the same capabilities as the analog Quadro2x, the Quadro2xi IP PBX connects via BRI-ISDN to the PSTN (in lieu of FXO) and via Ethernet to the Internet.

 [Click here for Quadro2xi data sheet]

Quadro4xi

Providing the same capabilities as the analog Quadro4x, the Quadro4xi IP PBX connects via BRI-ISDN to the PSTN (in lieu of FXO) and via Ethernet to the Internet.

 [Click here for Quadro4xi data sheet]

Quadro16xi

Providing the same capabilities as the analog Quadro16x, the Quadro16xi IP PBX connects via BRI-ISDN to the PSTN (in lieu of FXO) and via Ethernet to the Internet.

 [Click here for Quadro16xi data sheet]