The Client Layer Interface Port (CLIP) module controls the electro-optical and high-speed electronic circuits used for extraction and addition of a single wavelength signal in dense wave division multiplexing (DWDM) networks. The CLIP module is controlled through an amplitude-modulated signal superimposed on the traffic signal (Qeyton Proprietary Protocol QPP) and/or a Controller Area Network (CAN) electrical interface. The CLIP module translates a designated incoming client-layer signal to a DWDM-layer signal with a designated wavelength and amplitude. Additionally, the CLIP module translates a designated DWDM-layer signal and provides an outgoing client-layer signal.This Client Layer Interface Port module is unprotected.