5 ms·

Same with CDMA. Just had to copy the phone number and ESN. Boom whichever phone was closest to the tower would ring, if both phones wear pinging with near freq

Same with CDMA. Just had to copy the phone number and ESN. Boom whichever phone was closest to the tower would ring, if both phones wear pinging with near freq then both could receive the same SMS and call, but only one could be on a call at a time. No actual interception. Things got a bit different with MDN and MIN were different to ESN pair. Calls still came but you couldn't auth or call out for data services. It's all a bit old now, but look up QPST, QXDM for the past decade and 20 years ago look up Oki900.

kevin_nisbet 9y ago
For some reason I think CDMA could suffer from crosstalk in certain circumstances, but it was something relatively obscure, like one device had to be above another (like an apartment building), but otherwise in the same/similar coordinates, and then certain code assignments would allow crosstalk to happen. It was weird, because it could be one direction only. Unfortunately I don't really remember the details, since I worked on the core data network at the time.