Sorry, I didn't convey my message very well yesterday morning while I was sitting in bed typing on my cell phone.
We have moved all of our communications to Radio for a couple reasons.
1. When the fit hits the shan, everyone and their sister is going to be busy on their cell phones calling their third cousin to say they are okay. Using a cell phone is not a resource you can count on in a large scale incident. Your radio, which you have to have, will always work in a properly engineered and built system. During the bridge collapse in over 3,000 PTT events, there were 5 PTT events that didn't make it through, and they were public works users.
2. Practice every day, like you are getting ready for the next big one. We failed to communicate effectively that day for many reasons, and there were many links in the chain that didn't work perfectly. At the end of the day, we didn't have any significant failures, but we did learn a lot. We rely on our WMRCC for a large scale incident because they are essentially our metro-wide ATC tower. They tell us what hospital can accept our "Red" patient and 2 "Yellow" patients, what hospital is closed, and they also track which patient goes where, which is vital in the reunification process.
In a busy metropolitan area that uses a digital trunking system, no one who really can afford a $500 scanner is all that interested in listening to paramedics ask a doc to pronounce a 83 year old woman with gout. They want to hear the police talk about taking lunch breaks. Radio Reference Live Audio Feeds (soon to be soundify) is the primary feed provider to all of the smartphone apps, and their TOS explicitly state that their feeds are not to include frequencies or talkgroups that have a primary purpose of EMS patient information.
When I am receiving medical direction, I often prefer to have it a one way at a time street, so that I can convey my message without getting interrupted, and likewise, I have to wait for the Physician to complete their message.