Brand: Yeastar

Product Code: SOMOD

Availability: 99 in stock"

or
Description

SO Module (1 FXS & 1 FXO Ports)

Unique PSTN Fallback Function! Make/receive calls even when system power breaks down.
It can be used in MyPBX SOHO, MyPBX Standard, MyPBX U100, MyPBX U200, and MyPBX U5XX as well as all new S Series products.