A telecommunications switch. The switch includes a first output port mechanism through which sessions having cells are sent at a total session rate to a network. The switch includes a first input port mechanism through which sessions are received from the network. The first input port mechanism is connected to the first output port mechanism. The first input port mechanism has a first guaranteed session rate. The switch includes a second input port mechanism through which sessions are received from the network. The second input port mechanism is connected to the first output port mechanism. The second input port mechanism has a second guaranteed session rate, the sum of all guaranteed session rates are less than or equal to the total session rate. The switch includes a first scheduler connected to the first and second input port mechanisms and to the first output port mechanism for scheduling sessions of the input port mechanisms for service. The switch includes a server for providing service to sessions of the input port mechanisms. The server is connected to the first and second input port mechanisms and the first output port mechanism. A method for switching sessions having cells.