Expansion Board for Yeastar S100 and S300 systems Supports up to 4 optional modules/8 ports, including O2, S2, GSM and LTE modules
Adds 2 expansion cards to S100 and 3 to the S300

Expands capacity by 100 extensions and 30 concurrent calls.
1 module on the S100 and up to 2 modules on the S300

One Time Charge
Software Licenses are payable 100% in advance

Designed for medium meeting rooms, the Yealink ZVC640 Zoom Room system is a bundle video solution with MCore mini-PC, UVC84 4K camera, MSpeech speakerphone and touch panel, bringing everything you need to interact,connect, and collaborate with internal and external users seamlessly and intelligently.

Wideband Headset for Yealink IP Phone YHS34 Lite: Foamy ear cushions

Wideband Headset for Yealink IP Phone YHS34: Leather ear cushions