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  2. DTAC - Wikipedia

    en.wikipedia.org/wiki/DTAC

    DTAC has international roaming agreements with 147 countries. Currently DTAC is offering 3G commercial service as seen on this coverage map. [13] [14] 3G+ service can be used with 3G+ compatible mobile devices (WCDMA 850 and 2100 and/or HSPA/HSPA+ 850 and 2100) with speeds of up to 42 Mbit/s.

  3. List of LTE networks in Asia - Wikipedia

    en.wikipedia.org/wiki/List_of_LTE_networks_in_Asia

    Country or Territory Operator VoLTE B1 2100 MHz B3 1800 MHz B5 850 MHz B7 2600 MHz B8 900 MHz B20 800 MHz B28 700 MHz B31 450 MHz B40 2300 MHz B41 2500 MHz CA [G 1] schemes References & Notes

  4. European Union roaming regulations - Wikipedia

    en.wikipedia.org/wiki/European_Union_roaming...

    The current roaming regulation expires after 30 June 2032. [8] Research shows that the ban on roaming charges in 2017 more than doubled mobile data usage among travelers and led to a total consumer surplus of €2 billion within the first six months of implementation. The ban was likely overall welfare improving, as consumer gains exceeded the ...

  5. Roaming - Wikipedia

    en.wikipedia.org/wiki/Roaming

    The HLR will send to the VLR a MAP PRN (Provide Roaming Number) message to obtain the MSRN of the roaming cell phone. Like that the HLR will be able to route the call to the correct MSC. With the IMSI contained in the MAP PRN message, the VLR assigns a temporary number known as the mobile station roaming number (MSRN) to the roaming cell phone.

  6. Preferred Roaming List - Wikipedia

    en.wikipedia.org/wiki/Preferred_Roaming_List

    The Preferred Roaming List (PRL) is a database residing in a wireless (primarily CDMA) device, such as a cellphone, that contains information used during the system selection and acquisition process. In the case of R-UIM -based CDMA devices, the PRL resides on the R-UIM .

  7. IP exchange - Wikipedia

    en.wikipedia.org/wiki/Ip_exchange

    Since the year 2000 GSM operators have been using GRX (GPRS Roaming Exchange) network for routing the IP based commercial roaming traffic between visited and home operators. Mainly 2.5G and 3G data roaming has been using GRX. GRX is a private IP network (separated from the internet) consisting of multiple different GRX carriers that are ...

  8. Mobile country code - Wikipedia

    en.wikipedia.org/wiki/Mobile_country_code

    Mobile country code Country ISO 3166 Mobile network codes National MNC authority Remarks 289 A Abkhazia GE-AB List of mobile network codes in Abkhazia MCC is not listed by ITU 412 Afghanistan AF List of mobile network codes in Afghanistan 276 Albania AL List of mobile network codes in Albania 603 Algeria DZ List of mobile network codes in Algeria 544 American Samoa (United States of America ...

  9. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    Finally, if the Home Location Register knows that the phone is roaming in a particular VLR area, then it will request a temporary number (called an MSRN) from that VLR (using the IMSI as the reference number). This number is relayed back to the Gateway MSC, and then used to route the call to the MSC where the called phone is roaming.