The Yeastar EX30 expansion board adds one T1/E1/PRI port to a Yeastar S100 or S300 IP-PBX. When you ..
Yeastar DSP Expanson Module for Yeastar S100 and S300 Systems. Install on the motherboard to expand ..
The Yeastar EX08 expansion board has 4 onboard module slots for the future expansion and 8 port RJ-1..
The S2 is a module with 2 FXS ports to terminate two analog telephone. It can be used in MyPBX SOHO,..
The O2 is a module with 2 FXO ports to terminate two analog PSTN(POTS) lines. It can be used in MyPB..
Unique PSTN Fallback Function! Make/receive calls even when system power break down. It can be used ..