A Framework for Push-to-Talk Service Implementation using Voice over LTE (VoLTE) and its Key Features

With the recent advancement in wireless technology and enhanced smartphone capabilities, there has been an apparent increase in the utilisation of Push-To-Talk over Cellular (PTToC).  PTToC is a feature which can only be implemented when Voice-over-Long Term Evolution (VoLTE) capability is installed in the cellular networks. PTToChas wide coverage since it uses a cellular network. Moreover, PTToC is implemented as a data call. Therefore, calls can be made even when voice channels are congested. A pictorial representation of PTToC is shown in figure 1 below.

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Figure 1: An illustration of PTToC using various cellular networks.

The Role of PTToC in Mission Critical Communications

With the advancement in telecommunications, the PTToC utility is currently being used in many commercial applications, for example, Public Safety networks and business critical sectors. This technology works in harmony with Mission-Critical applications offered by the Land Mobile Radio (LMR) networks. Today’s cutting edge communication techniques have enabled organisations to combine traditional voice communication with growing data sources in order to make better and faster decisions. PTToC is an essential component of LTE-based solutions. Moreover, encrypted Push-to-Talk over cellular offers enhanced features such as location tracking, group texting and image messaging for real-time communications.

Key PTToC Capabilities

PTToC offers multiple benefits for the agencies and organisations in commercial and business sectors by giving mission critical services. A brief description of the PTToC salient features is given below.

Instant Global Connectivity

Since PTToC is operating on modern digital cellular network standards, the entire world has now same network infrastructure. Public safety agencies can now connect any where around the globe in the same way as it would connect with the terrestrial-based trunked radio systems.

Fast and secure public safety networks

PTToChas connection speeds equivalent to land-mobile radio communication. Thus,byintegrating the benefits of PTToC and LMR, users can be facilitated with seamless mobile communication. With the introduction of encrypted PTToC, organisations are able to increase the number of users, in order to make them capable of communicating over a DMR network in a secure way.

Flexibility in critical communication services

This technology is well suited to a wide-range of devices. The user can use this technology with their choice of device. PTToC is very handy so that field workers can use it easily while working in remote areas and harsh environments. Group call in PTToC enables users to exchange information simultaneously with multiple users, and by this means all the group members are fully aware of the situation.

In summary, the rise in the usage off PTToC is due to the speed offered by 3G and 4G mobile networks and the introduction of smartphones. With the introduction of new applications for PTToC technology, it seems that PTToC communications will be an essential component of emerging LTE-based solutions.

To further know about implementation of VoLTE, Technologies, Challenges, and RCS for Public Service, you can join our  Voice over LTE (VoLTE) and RCS Certification Courses here.

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