AT&T Enhanced Push-to-Talk With Integrated Dispatch
Issues With Existing Mobile Communications Services in the Energy Industry Two-way Land Mobile Radios (LMR) are unable to support mobile broadband data applications. Some employees may have to carry two devices to stay connected. Two-way LMRs also have geographic coverage constraints, complexity of talk groupset-up/updates, inefficient system resources for 1:1 private calls, and high total cost of ownership. Existing 3G-based PTT-over-cellular services only work on older handsets and have limited device choices, with no support for 4G LTE. Existing communications solutions do not [...]