Hi, There are various combinations possible and the PSR model can be used to model PTT services. Infact these would be modelled like cellular Voice services (If the PTT is used for voice comms only) with the mapping resources (IMSI would be there just like cellular and maybe IOT device). The access (CFSS) may either be Wi-Fi or Cellular or even Satellite access and may also involve activation on a PoC server (another CFSS) that defines the group size etc. Regarding the group management, while the individual IMSI s are activated via orders, the management fo the group may or may not be handled via customer orders. That is a business process and based on the answer the modelling may or may not be done for the user licenses.
