In this study, we analyze the solitary wave behavior of a truncated M-fractional low-pass
nonlinear electrical transmission line (NLETLs) model. NLETL models are relevant to
computer network systems, particularly for high-speed data transmissions. They influence the
behavior of signals traveling through network cables. To investigate the dynamics of solitary
waves in the model, we applied the modified Sardar sub-equation and extended the sinhGordon equation expansion methods. We illustrated the 2D, 3D, and contour shapes of
selected solutions for appropriate values of the NLETLs dynamics using Mathematica-14.
Kink, anti-kink, bright-dark bell, dark bell, M-shaped periodic soliton, and logarithmic wave
solutions were obtained. The results indicate that the proposed techniques may provide
valuable, powerful, and efficient insights into the dynamics of nonlinear evolution models.