For improved productivity and efficiency many organisations are adopting POC Push To Talk over Cellular (3G/4G/Wi-Fi networks) which provide instant communications with large coverage and national or international connectivity.
Push-to-talk over cellular (PoC) solutions first appeared on the market over a decade ago following the release of the first set of specifications drawn up by the Open Mobile Alliance (OMA) in June 2005. There are two main approaches to how Push to Talk platforms offer their service: static IPs and dedicated APNs into particular mobile networks, or multi-network roaming SIMs.
A typical push-to-talk connection connects almost instantly. A significant advantage of PTT over cellular is the ability for a single person to reach an active talk group with a single button press; users need not make several telephone calls to coordinate with a group. Push to talk cellular calls similarly provide half-duplex communications — while one person transmits, the other(s) receive. This combines the operational advantages of PoC with the interference resistance and other virtues of mobile phones.
Pricing and billing works in the same manner as a mobile phone contract – most POC platforms allows you to purchase a device and then connect with a SIM card with a specified amount of data usage (x hours of talk time and x Mb of data) often for a fixed fee per annum. The key thing is to work out how much talk time/data is right for your needs. Just as with a PMR/DMR two way radio network, it is also important to carefully plan your fleet mapping and fleet management requirements before you commit and what range of applications (such as types of alarm) you want the service to support.
PoC can turn your android device into a professional digital two-way radio with international reach and offers an expansive array of real-time pre-emptive priority calling and integrated emergency calls.