controls handoff functions among others and routes the signal as requested each bsc 100 105 is connected to a landline network 130 the landline network 130 may include among others the public switched telephone network pstn the integrated services digital network and the internet land terminals 140 lt connected to the landline network 130 are also shown for completeness in a specific call scenario a first subscriber 160 is communicating with a second subscriber 165 via a first cell site 170 and bsc 100 and a second cell site 175 and bsc 105 the bscs 100 and 105 communicate with each other over the landline network 130 each bsc 100 105 comprises a digital signal processor with reference to fig2 the signal processor 200 is associated with the bsc 100 while the signal processor 205 is associated with the bsc 105 the digital signal processor 200 includes a codec 210 that provides the capability of voice transcoding from mu law or a law pcm depending on which format is being used to a compressed format in accordance with the standard being used and vice versa the digital signal processor 205 includes a codes 215 that carries out same transformations in a particular example the compressed format in use is vselp vector sum excited linear prediction the digital signal processors 200 and 205 are connected to one another by a transmission facility 231 that could be a signal transmission path through the landline network 130 for the purpose of this example the transmission facility 231 includes a t 1 connection the digital signal processor 200.