Etherstack plc, a wireless technology company, engages in licensing mission critical radio technologies to equipment manufacturers and network operators Australia and internationally. Its technology enables push-to-talk (PTT) communications; and advanced digital land mobile radio (LMR), and cellular and satellite networks. The company offers a range of cryptographic solutions, including P25 Security Suite unites AES/DES P25 encryption engine with P25 key fill device (KFD) support for complete P25 subscriber encryption; P25 key management facility; P25 security dongles; and FIPS 140-2 Cryptographic Module, a single-board security device that implements APCO P25 encryption, decryption, and key management and storage services in conformance with FIPS140-2 standards. It also provides defense waveforms, such as technology licensing and transfer, and specialist services; waveform heritage; waveform test and development environment; outsource your risks; and reconfiguration and framework architecture standards. In addition, the company offers LMR network building blocks; APCO P25, dPMR, DMR, MPT1327, and TETRA wireless communications protocol stacks; and tactical and satellite solutions comprising P25 tactical repeaters and IVX – PTT IP radio. It serves public safety, defense, utilities, transportation, and resource sectors. The company was formerly known as MM&S (5698) plc and changed its name to Etherstack plc in May 2012. Etherstack plc was incorporated in 2012 and is based in Chippendale, Australia.