Review on RJ11 6P4C Modular Telephone Extension Cable Phone Cord Line Wire (7 Feet by Allison Smith

I bought this cable for my home office. I bought another phone cord from a different brand. Unfortunately, they look like I mixed them up, so I don't know which brand is giving me audio quality issues for my landline. I use this for my home office and need a landline connection for work. I hear a crackle as noise and I'm not too happy with it. I use a different cable to connect to the internet. In general I think it works well, but I'm not sure if this or any other brand gives me problems with the sound.