LTE25 solutions
About Etherstack

  • Mission critical, high availability solution
  • Listen to multiple talkgroups simultaneously
  • PTT group calls within the LTE network
  • Talk directly to the dispatch centre
  • Priority and emergency calls supported
  • End-to-end encryption between LTE & P25
  • Location services allows LTE & P25 units to be tracked
  • Uses native P25 vocoder
  • Runs on COTS LTE Android platforms
  • Reduced cost of ownership
  • Geographically diverse disastery recovery node
  • Fast call setup times between P25 & LTE devices


LTE25 Solutions

Etherstack's LTE25 solution bridges LTE networks and existing APCO P25 narrowband networks with an integrated, push-to-talk solution. Traditional radio handsets communicate seamlessly with 4G Android devices, allowing for a true interoperability in multi vendor P25 / LTE networks. LTE25 consists of a number of elements hosted (preferably) within the LTE Evolved Packet Core.

LTE25 Softswitch

A high availability all-IP SIP & RTP based softswitch designed specifically for mission critical radio networks. The softswitch supports a rich supplementary service feature set based on public safety LMR network call types including group calls, fastcal setup times, emergency calls and encrypted voice services. The solution supports geographical redundancy (disaster recovery node) and multiple LTE25 softswitches can be deployed within the EPC to provide regionalisation of voice traffic services (reducing backhaul considerations) or greater segregation of traffic services (e.g. police vs. industry).

DSN (Data Service Node)

A high availability all-IP data service node (SGSN/GGSN) that manages SNDCP data connections for secure applications on the LTE25 Android Client handsets, such as encrypted location.

KMF (Key Management Facility)

A high availability network element that manages cryptographic key distribution within the LTE25 and APCO P25 network solution. The KMF manages Over-The-Air-Rekeying (OTAR) sessions between LTE25 Client handsets and the key manager in the network. Etherstack's KMF can be used to rekey either LTE25 client handsets or traditional P25 client handsets from the same manager simultaneously.One or more KMFs (private or shared) can be deployed in the EPC.

LOC (Local Operations Console)

Etherstack’s state of the art Local Operations Console (LOC) provides team management functions within the client’s enterprise network. Distinct from a larger Network Operations Centre (NOC) based console from manufacturers such as Zetron and Intergraph, the LOC provides a desktop based solution blending AVL / GPS fleet management and dispatch calling functions. Utilising Google Earth mapping, the LOC communicates with the LSC to provide mapped location details of team members within the network. The LOC can see both LTE users and P25 users simultaneously and establish calls to individuals or groups of users at the click of a mouse.

LTE25 Network Diagram

Click to enlarge.

LTE25 diagram