Yeastar EX30 CARD Expansion 1 onBoard with E1/T1/PRI Port for S100 & S300


1 E1/T1 Port Expansion Board for Yeastar S100 and S300 systems Add up to 2 boards to S100 and up to 3 to S300 connect your VoIP phone system to a digital phone system, the EX30 makes it simple.