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Airtel: Bharti Airtel Bangladesh Ltd. Operational: GSM 900 / GSM 1800 / UMTS 2100: Formerly Warid Telcom, later Airtel. Currently merged with Robi keeping brand name Airtel 470: 09: ollo: Bangladesh Internet Exchange Limited (BIEL) Not operational: LTE 800 / LTE 2600 / WiMAX 3500 [16] shut down 2019 [17] 470: 10: Banglalion: Banglalion ...
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.
The purpose of the diameter credit control application is to provide a framework for real-time charging, primarily meant for the communication between gateways/control-points and the back-end account/balance systems (typically an Online Charging System). The application specifies methods for: Quota management (Reserve, Reauthorize, Abandon)
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In telecommunication, a public land mobile network (PLMN) is a combination of wireless communication services offered by a specific operator in a specific country. [1] [2] A PLMN typically consists of several cellular technologies like GSM/2G, UMTS/3G, LTE/4G, NR/5G, offered by a single operator within a given country, often referred to as a cellular network.
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At least 592 cases were reported after the alert was first raised by Congo's health ministry on Oct. 29. The ministry said the disease had a fatality rate of 6.25%.