Etherstack LTE25TM narrowband voice P25 over LTE solution

Etherstack has released its narrowband voice P25 over LTE solution, said to provide a missing link in the migration of narrowband to broadband solutions and a key component in hybrid LTE and APCO P25 networks.

Called LTE25TM, it consists of the Etherstack LTE25 Softswitch residing in the LTE evolved packet core (EPC) and a native P25 PTT-over-cellular (PoC) client application running on LTE handsets. The system uses the same APCO P25 mobile software that is provided on a traditional P25 handset with an enhanced graphical user interface to allow end-to-end encryption of calls between the LTE handset and a radio on a traditional APCO P25 network.

The softswitch supports both the ISSI and CSSI interfaces allowing the LTE network and users to be connected seamlessly to traditional APCO P25 networks. This allows users on both networks to communicate during emergencies and for dispatch operators in the P25 network to communicate with users on the LTE network via the CSSI.