The Yeastar EX08 is an 8-port expansion board that lets you load multiple smaller Yeastar port modules — O2 (FXO), S2 (FXS), GSM, 4G or BRI — into a single chassis bay, giving you flexible high-port-density configurations on the P-Series and S-Series PBX appliances.
Key Features
Adds 8 module bays to a single PBX slot
Mix FXS, FXO, GSM, 4G and BRI on one board
Compatible with P-Series and S-Series chassis
Technical Specifications
8 additional module-bay ports on Yeastar P-Series / S-Series
Hosts O2 (FXO), S2 (FXS), GSM, BRI, or 4G mini-modules
Slots into a free expansion bay on the parent PBX
What's in the Box
Yeastar EX08 expansion board
Mounting screws and install guide
Typical Deployments
High-density analog line installs
Mixed analog + GSM port configurations
Hospitality deployments with many room extensions
Frequently Asked Questions
No — the EX08 is the carrier board only. Smaller O2 / S2 / GM / BRI modules are sold separately and slot into it.
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•Adds 30 extensions and 10 concurrent calls per module
