Figure 6-6: Dial-Up circuits Versus Leased Line Circuits Dial-Up circuits Leased line circuits Operation Dial-Up. Separate Permanent circuit circuit for each call always on Up to 56 kbps Speed for Carrying Residence can only 56 kbps to gigabit Data Send up to 33.6 kbnospeeds Number of voice One Several due to Calls multiplexed multiplexing There are two types of circuits between customer premises ordinary dial-up circuits and leased line circuits 6-136-13 Figure 6-6: Dial-Up Circuits Versus Leased Line Circuits Dial-Up Circuits Leased Line Circuits Operation Dial-Up. Separate circuit for each call. Permanent circuit, always on. Speed for Carrying Data Up to 56 kbps Residence can only Send up to 33.6 kbps 56 kbps to gigabit speeds Number of Voice Calls Multiplexed One Several due to multiplexing There are two types of circuits between customer premises: ordinary dial-up circuits and leased line circuits