utilize the bandwidth for a data call the first call processing system receives signaling for the data call the first call processing system then processes the signaling to generate a first instruction to set up a constant bit rate connection for the data call between the first call processing system and a second call processing system the first call processing system processes the signaling to generate a second instruction to set up a variable bit rate connection between the first call processing system and the second call processing system any bandwidth that the data call does not need and use can be utilized for other calls thus the performance of other calls is improved application_number US 48714700 A description fig3 depicts a system level block diagram in an example of the invention a communication device 300 is connected to a first call processing system 310 by a first call link 302 the first call processing system 310 is connected to a second call processing system 320 by a second call link 312 the second call processing system 320 is connected to a communication device 330 by a third call link 322 the communication device 300 and the communication device 330 could be any device configured to exchange calls some examples of the communication device 300 and the communication device 330 are customer premises equipment cpe a service platform a switch and a remote digital.