Apple is looking for various experts in the field of wireless technology. They will focus on the next generation of IOS. Thus, an employee sought with knowledge of IP Multimedia Subsystem (IMS) architectures, the LTE-based voice services . All employees work at the Apple Wireless Technology team. There are mainly software engineers need knowledge of the essential speech.
The vacancies indicate that Apple is working with Voice over LTE or its own VoIP solution. The new iPhone already supports LTE, but the iPhone yet. It is generally expected that the next generation iPhone LTE also will support. In U.S. smartphones is already common.
Knowledge of current wireless technologies like GSM / UMTS, CDMA and IMS is requested, but also people who are knowledgeable about SIP (Session Initiation Protocol), RTP (Real-Time Transport Protocol) and VoIP protocols. IMS is an architecture major U.S. operators use to implement 4G/LTE-netwerken. With solutions that Apple would work a voice service can be developed both on the iPhone works, as on iPads which a large part only Wi-Fi support.