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  2. DTAC - Wikipedia

    en.wikipedia.org/wiki/DTAC

    Dtac center at Central Silom Complex. DTAC claims to have the second-widest coverage nationwide, compared to its main rival AIS, with more than 13,000 base stations installed as of 2016 on the 850 MHz, 1800 MHz and 2100 MHz bands. As of 2013 DTAC is offering both EDGE and 3G services on its postpaid and prepaid brands DTAC Happy. Unlimited ...

  3. List of mobile network operators in Asia and Oceania

    en.wikipedia.org/wiki/List_of_mobile_network...

    4G : FDD LTE : B1/B3 (Roaming on Truemove H, B8 prohibited) 4.5G : Up to 2xCA B1+B3, nationwide 4x4 MIMO on B3, 256/64QAM 4G Calling ( VoLTE , ViLTE ) : Unsupported

  4. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    If a subscriber is roaming on a different company's network, the subscriber, instead of the caller, may pay a surcharge for the connection time. International roaming calls are often quite expensive, and as a result some companies require subscribers to grant explicit permission to receive calls while roaming to certain countries.

  5. 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 ...

  6. Mobility management - Wikipedia

    en.wikipedia.org/wiki/Mobility_management

    Roaming is one of the fundamental mobility management procedures of all cellular networks.Roaming is defined [2] as the ability for a cellular customer to automatically make and receive voice calls, send and receive data, or access other services, including home data services, when travelling outside the geographical coverage area of the home network, by means of using a visited network.

  7. Network-neutral data center - Wikipedia

    en.wikipedia.org/wiki/Network-neutral_data_center

    Network-neutral data centers exist all over the world and vary in size and power. While some data centers are owned and operated by a telecommunications or Internet service provider , the majority of network-neutral data centers are operated by a third party who has little or no part in providing Internet service to the end-user .

  8. GPRS roaming exchange - Wikipedia

    en.wikipedia.org/wiki/GPRS_Roaming_Exchange

    A GPRS roaming exchange (GRX) acts as a hub for General Packet Radio Service (GPRS) connections from roaming users, removing the need for a dedicated link between each GPRS service provider. It was developed to facilitate a more efficient way for operators to interconnect networks, and played a large part in the transition to third-generation ...

  9. Mobile phone signal - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_signal

    There may also be gaps where the service contours of the individual base stations (Cell towers) of the mobile provider (and/or its roaming partners) do not completely overlap. In addition, the weather may affect the strength of a signal, due to the changes in radio propagation caused by clouds (particularly tall and dense thunderclouds which ...