There is a general announcement in the listing for this system that they will be going to a 3 Site Harris P25ip P25 Phase I system in the near future. My question is: is this system a regular P25P1 system that can be easily listened to with a 668, 436hp, trx-1, etc, or is the "IP" after the P25 denote something new? The system is currently on a provoice system. Just didn't know what P25ip stands for. Thanks!