In a single-cable system of a LAN, the process by which incoming transmissions at one frequency are converted to another frequency for outgoing transmission. The translation takes place at the headend.

• 在局域网络的单电缆系统中的一种过程，借此可将一种频率的入传输转换为另一种频率，以进行出传输。这种转换发生在头端器中。