![Yeastar Technology S-Series Installation Manual Download Page 36](http://html2.mh-extra.com/html/yeastar-technology/s-series/s-series_installation-manual_3259658036.webp)
Installation_Guide | 1 - Installation Guide | 36
Install Yeastar S412
Install Telephony Module
Yeastar S412 is designed with 8 fixed on-board FXS ports and 4 reserved slots. You can insert different modules
into the 4 reserved slots according to your needs. Yeastar S412 supports installing up to 4 modules.
The optional modules are as below:
•
S2 Module
•
O2 Module
•
B2 Module
•
GSM Module
•
3G Module
•
4G Module
Note:
Before installing the module, check if the module is clean and intact.
1.
Loosen the screws at the bottom of the device and remove the upper cover.
2.
Insert the module to the Module Slot.
•
T_Slot1: For S2 module only.
•
T_Slot2: For S2 module only.
•
T_Slot3: For all kinds of modules except S2 module.
•
T_Slot4: For O2 module, B2 module, GSM module, and 3G module.