s own antenna 25 which may be disposed internally of the phone onto the cellular network 16 for reception by the intended cellular user likewise voice or other data transmitted by a cellular user on the network 16 is received by the smartphone 12 and is communicated through the adapter 20 to the processing core 18 for transmission onto the sdr network 14 from another antenna 26 that may extended from the body of the sleeve 10 as shown in fig1 and 5 known security policies are preferably associated with the message data translation and voice bridging functions running on the processing core 18 to ensure that only an intended recipient on one of the two networks 14 16 will receive information originating from a user on the other network as represented in fig2 the processing core 18 has a core engine ce 24 that is programmed and configured in a known manner to process advanced networking waveforms such as those specified by the jtrs the ce 24 includes radio frequency rf receiver and transmitter stages 30 digital signal processing dsp stages 32 and a powerful processing core 34 in addition to handling a given waveform the ce 24 also hosts a multi.