Mobile communication switching system for voice/nonvoice services
F. Ishino, Takemi Arita, Masami Yabusaki, Ichio Osano · 2002
The architecture and service features of a digital mobile communication switching system are presented. New technologies used in this system include advanced voice coding-decoding equipment that allows low-bit rate speech transmission, a speech path monitoring circuit, and a high-quality nonvoice service control scheme.>