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2. Hayes AT command set - Wikipedia

   en.wikipedia.org/wiki/Hayes_AT_command_set

   Hayes 300 Baud Smartmodem. The Hayes command set (also known as the AT command set) is a specific command language originally developed by Dale Heatherington and Dennis Hayes [1][2] for the Hayes Smartmodem 300 baud modem in 1981. The command set consists of a series of short text strings which can be combined to produce commands for operations ...

3. Modem - Wikipedia

   en.wikipedia.org/wiki/Modem

   v. t. e. A modulator-demodulator or most commonly referred to as modem is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver ...

4. List of mobile virtual network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_virtual...

   Voice and data service operators. In general, the types of phones and other devices supported by the MVNOs are in line with the technologies used by the Mobile Network Operator (MNO), the underlying cellular network provider. All major and regional MNOs use 4G LTE / LTE Advanced and 5G NR protocols (2G and 3G having been deprecated and shut ...

5. List of ITU-T V-series recommendations - Wikipedia

   en.wikipedia.org/wiki/List_of_ITU-T_V-Series...

   V.33 is an ITU-T recommendation for a modem operating as full-duplex on a 4-wire point-to-point leased line allowing bidirectional data transfer at either 14.4 kbit/s. V.34 (09/94) is an ITU-T recommendation (superseded) for a modem, allowing up to 28.8 kbit/s bidirectional data transfer using TCM modulation.

6. LTE frequency bands - Wikipedia

   en.wikipedia.org/wiki/LTE_frequency_bands

   The main LTE bands are in bold print. Not yet deployed are not available (N/A). Partial deployments varies from country to country and the details are available at List of LTE networks. Networks on LTE bands 7, 28 (LTE-FDD) are suitable for global roaming in ITU Regions 1, 2 and 3. Networks on LTE bands 1, 3 (LTE-FDD) are suitable for roaming ...

7. List of Qualcomm Snapdragon modems - Wikipedia

   en.wikipedia.org/wiki/List_of_Qualcomm...

   Samsung 14 nm LPP process. Chipsets: Snapdragon X12 LTE Modem, Snapdragon 820/821 processor, Snapdragon 660 Mobile Platform, Snapdragon 630 Mobile Platform, Snapdragon 636 Mobile Platform, Snapdragon 670 Mobile Platform, Snapdragon 675 Mobile Platform, Snapdragon 665 Mobile Platform, Snapdragon 678 Mobile Platform.