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  2. Huawei SingleRAN - Wikipedia

    en.wikipedia.org/wiki/Huawei_SingleRAN

    SingleRAN GSM-R is a suite of communications technologies that are designed to improve telecommunications performance through long tunnels, over very long distances, and in high-traffic areas. Huawei began researching GSM-R technologies in 2001 and, according to Cellular News, is "one of only a few" GSM-R network providers in the world. [21]

  3. SIM lock - Wikipedia

    en.wikipedia.org/wiki/SIM_lock

    Mobile network code (MNC; e.g., AT&T Mobility, T-Mobile, Vodafone, Bell Mobility etc.) Mobile subscriber identification number (MSIN; i.e., only one SIM can be used with the phone) Additionally, some phones, especially Nokia phones, are locked by group IDs (GIDs), restricting them to a single Mobile virtual network operator (MVNO) of a certain ...

  4. Huawei U2801 - Wikipedia

    en.wikipedia.org/wiki/Huawei_U2801

    The Huawei U2801 is a simple POS phone with some multimedia features. It has a 3.5mm headphone jack for listening to MP3 audio files. The dedicated music key opens the Music menu, allowing one to select which files or station they would like to listen to.

  5. AT&T outage: Company says network is fully restored after ...

    www.aol.com/news/thousands-t-customers-report...

    For Apple iPhones, SOS mode appears when your device isn't connected to a cellular network. But you can still make emergency calls. The feature is available in the United States, Canada and Australia.

  6. Verizon network suffers widespread outage — why many ... - AOL

    www.aol.com/verizon-network-suffers-widespread...

    A widespread Verizon outage hit mobile phone customers across California and the U.S. on Monday, limiting some residents to emergency phone calls, so-called SOS mode.

  7. Network switching subsystem - Wikipedia

    en.wikipedia.org/wiki/Network_switching_subsystem

    The mobile switching center server is a soft-switch variant (therefore it may be referred to as mobile soft switch, MSS) of the mobile switching center, which provides circuit-switched calling mobility management, and GSM services to the mobile phones roaming within the area that it serves. The functionality enables split control between ...

  8. Verizon network suffers widespread outage — why many ... - AOL

    www.aol.com/news/verizon-network-suffers...

    The cellphone provider is the nation’s largest with more than 114 million customers.

  9. Mobile QoS - Wikipedia

    en.wikipedia.org/wiki/Mobile_QoS

    Mobile cellular service providers may offer mobile QoS to customers just as the fixed line PSTN services providers and Internet service providers may offer QoS. QoS mechanisms are always provided for circuit switched services, and are essential for non-elastic services, for example streaming multimedia. It is also essential in networks ...