Estalky understand push to talk (POC) market growing and market demand. we delicated to provide professional push to talk over celluar radio which use GSM.WCDMA, LTE network to offer customers unlimited, instant national communications. We are not just device provider ,developer and manufacturer, our company also provide complete technical support on third party PTT apk intergration, improve the whole solution(PTT device+PTT platform+network) performance, help communicate more quickly, more securely and with more people. Estalky brand terminals are built tough to meet harsh working enviroments,our product have been successfully deploy in government, public security, utility, transportation, shopping mall, enterprise & business...... Join in us ,grow together with brand values and global success