The MB12 motherboard is an all-digital network-based SIP intercom module that uses a mature VoIP solution as its core component, offering stable and reliable performance. Its hands-free function employs a digital full-duplex method, providing loud and clear voice output. The hands-free speaker output can be configured according to customer needs, either with an onboard 2.4W output or through an external amplifier board to achieve voice amplification.

The MB12 provides a rich set of interfaces, including four quick key interfaces, LCD interface, keyboard interface, handset interface, hook switch interface, and dual Ethernet ports, which can meet the needs of most customer applications. In addition, it can also serve as a motherboard for other industry applications, such as waterproof and moisture-proof telephones, automatic dialing waterproof telephones, no-dial emergency telephones, amplified anti-noise broadcast telephones, emergency telephones, customer service telephones/prison telephones, scrolling dial-out elevator telephones, and bank telephones, among others. Its applicability is very broad.