Yeastar EX08 Expansion Board with 8 RJ11 Ports for S100 and S300 True-Tech

The EX08 Yeastar Expansion Board with 8 RJ11 Ports for S100 and S300 is an expansion board with eight external RJ-11 ports and four internal card slots for adding compatible Yeastar modules. The EX08 fits into a Yeastar S100 or S300 IP-PBX to give custom functionality to your VoIP phone system. Available modules offer: 2 FXS, 2 FXO, 1 FXS/1 FXO, BRI, GSM and 3G.