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  2. Voice over LTE - Wikipedia

    en.wikipedia.org/wiki/Voice_over_LTE

    VoLTE calling. Voice over Long-Term Evolution (acronym VoLTE) is an LTE high-speed wireless communication standard for voice calls and SMS using mobile phones and data terminals. [1] [2] VoLTE has up to three times more voice [3] and data capacity than older 3G UMTS and up to six times more than 2G GSM.

  3. LTE (telecommunication) - Wikipedia

    en.wikipedia.org/wiki/LTE_(telecommunication)

    In this approach, LTE just provides data services, and when a voice call is to be initiated or received, it will fall back to the circuit-switched domain. When using this solution, operators just need to upgrade the MSC instead of deploying the IMS , and therefore, can provide services quickly.

  4. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    EV-DO is not designed for voice, and requires a fallback to 1xRTT when a voice call is placed or received. Notes: All speeds are theoretical maximums and will vary by a number of factors, including the use of external antennas, distance from the tower and the ground speed (e.g. communications on a train may be poorer than when standing still).

  5. IP Multimedia Subsystem - Wikipedia

    en.wikipedia.org/wiki/IP_Multimedia_Subsystem

    Examples of global standards based on IMS are MMTel which is the basis for Voice over LTE , Wi-Fi Calling (VoWIFI), Video over LTE (ViLTE), SMS/MMS over WiFi and LTE, Unstructured Supplementary Service Data (USSD) over LTE, and Rich Communication Services (RCS), which is also known as joyn or Advanced Messaging, and now RCS is operator's ...

  6. SRVCC - Wikipedia

    en.wikipedia.org/wiki/SRVCC

    Single Radio Voice Call Continuity (SRVCC) provides an interim solution for handing over VoLTE (Voice over LTE) to 2G/3G networks. The voice calls on LTE network are meant to be packet switched [1] calls which use IMS system to be made. To make it inter operable with existing networks, these calls are to be handed over to Circuit switched calls ...

  7. Android Operating System, Expanded Voice Capabilities ... - AOL

    www.aol.com/news/2013-08-19-android-operating...

    Android Operating System, Expanded Voice Capabilities Extend Functionality of Public Safety LTE Handheld Device Motorola Solutions' LEX 700 with Android™ now available with quick action button ...

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