is used by data type services such as surfing the internet or uploading downloading files however when a call is to be passed through the rcg the required bandwidth for the call is deallocated from the data services and prioritized for the telephone call this necessary because the quality of service qos is important for effective communications over electronic networks since the voice data is carried over a u201c data centric u201d network topology an ip based network call quality can suffer greatly every effort must be taken to eliminate or reduce the packet delay through every network element to be able to provide the best call quality for data applications such as surfing the internet or downloading files packet delay is acceptable and expected and it does not affect the u201c quality u201d of the data since all voice and data is transmitted as packets there are no u201c time slots u201d or other type of u201c channelization u201d associated with the transmission of this data over either the pots line or the wireless interface channelization of the voice data does occur within the slic codec interface u2014 27 but is converted into ip packets by the dsp engine u2014 33 and is handled as packets from that point on regardless of whether the call is originating or terminating at the rcg the bandwidth allocation process is the same when the sip call setup messages are processed the type of voice compression that will be used is defined the rcg main cpu 19 handles the ip packet flow between the dsp engine 33 usb port 12 ethernet port 11 802 11b g module 36 and the modem daa 41 devices.