Aspects relate to provision of enterprise call capabilities to mobile devices. In some cases, the coating can exhibit desirable properties and characteristics such as durability, corrosion resistance, and high conductivity. The graphical user interface screen includes buttons configured to facilitate switching among the management system applications. The handle member dispensing end connected to a dispensing member that is elongated and substantially cylindrical. The first event may be the expiry of a poll retransmit timer, the second event may be a detecting whether a ACK or NACK is not received, the third event may be a next transmission opportunity, and the first action may be setting a polling bit of a data PDU to be transmitted.