Yeastar S100 and S300 are expandable.
- S100 supports up to 2 EX08/EX30 Expansion Boards; supports 1 D30 Module.
- S300 supports up to 3 EX08/EX30 Expansion Boards; supports up to 2 D30 Modules.
EX08 Expansion Board
EX08 board supports up to 4 modules (8 RJ11 ports).
Optional modules on EX08 board
- O2 Module
- S2 Module
- SO Module
- B2 Module
- GSM/3G/4G Module
EX30 Expansion Board
EX30 board supports 1 E1/T1 port.
D30 is a DSP module, used to expand the capacity of PBX. With a D30 module added, the extensions increase 100 and concurrent calls increase 30 additionally.