Initializes the EasyLink library’s RF settings and provides the current status.
EasyLink<.begin();
EasyLink.begin(EasyLink_PhyType);
EasyLink_PhyType: the EasyLink_PhyType is the name of the EasyLink_PhyType to be used. By default the EasyLink_PhyType is set to EasyLink_Phy_50kbps2gfsk when calling begin() without parameters. Currently this is the only PHY type supported.