How does adsl divide bandwidth of a twisted pair cable?

ADSL (Asymmetric Digital Subscriber Line) divides the bandwidth of a twisted pair cable using frequency division multiplexing. It allocates lower frequencies for voice calls, allowing traditional telephone services to operate simultaneously with internet data. Higher frequencies are reserved for upstream and downstream data transmission, with downstream speeds typically being greater than upstream speeds, hence the term "asymmetric." This separation enables efficient use of the same line for both voice and data services without interference.