PCU in GSM netwprk..

The Packet Control Unit (PCU) is an adaptor / handler unit that enables GPRS and EDGE functionality within the Motorola Radio Access Network (RAN). It connects the Base Station Controller (BSC) from the GSM network with the packet core. The Motorola PCU is based on Compact PCI industry standards and is highly scaleable. Motorola is also market leading in that its PCU is GPRS coding schemes 1-4 capable without any upgrade required to the BSC.