What are the common signs of a main sewer line issue in the basement, and how can it be resolved effectively?

Common signs of a main sewer line issue in the basement include slow draining sinks or toilets, gurgling noises from drains, foul odors, and water backups. To resolve the issue effectively, a professional plumber should be contacted to inspect the sewer line, identify the problem, and perform necessary repairs or replacements. This may involve using tools such as drain snakes, hydro-jetting, or trenchless sewer repair methods.