ZA-PLAZartek PTT POC Platform Fee , Once off for the lifetime of the radio The ZA PT3 links to a Server Platform where all calls are directed through. You are able to choose between various platforms such as ZartekPTT, REALPTT or others which must be setup before use. Each radio needs to be assigned a USER ACCOUNT that is available via Zartek for once off, annual or monthly subscription cost, to access the platform. Zartek can also setup selective groups