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

Yeastar EX08 Expansion Board for S-Series IP PBX

Yeastar EX08 is an Expansion board for the S100 and S300 PBX products. The Yeastar EX08 has 4 onboard module slots and 8 interfaces on the panel.
Yeastar S-Series VoIP PBX are Scalable and Modular

Yeastar S-Series VoIP PBX provides flexible telephony interfaces combination while allowing for future scalability with unique modular design. Besides the built-in rich SIP capabilities, S-Series lets you decide what types of extensions and physical trunks you need in your telephone system. When your business grows, adding more users and concurrent calls is also possible with S-Series.

Add Telephony Interfaces
With Yeastar S-Series, all the telephony interfaces are modular and customizable, whether it’s FXS, FXO, ISDN BRI, GSM/3G, or E1/T1/PRI. S20 has 2 onboard module slots, S50 and S412 supports 4. S100 and S300 require the combination of Expansion Board and Telephony Module to add telephony interfaces. S100 allows 2 Expansion Boards and S300 supports 3.