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  2. Type Allocation Code - Wikipedia

    en.wikipedia.org/wiki/Type_Allocation_Code

    The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM , UMTS , LTE , 5G NR , iDEN , Iridium or other IMEI-employing wireless ...

  3. Huawei 4G eLTE - Wikipedia

    en.wikipedia.org/wiki/Huawei_4G_eLTE

    4G eLTE is Huawei's proprietary derivative of the LTE standard, the "e" standing for "enhanced", intended to provide wireless broadband transmission with peak downlink speeds of 50 Mbit/s and 20 Mbit/s uplink per site in 5 MHz, 10 MHz and 15 MHz frequencies.

  4. Symmetric multiprocessing - Wikipedia

    en.wikipedia.org/wiki/Symmetric_multiprocessing

    Diagram of a symmetric multiprocessing system. Symmetric multiprocessing or shared-memory multiprocessing [1] (SMP) involves a multiprocessor computer hardware and software architecture where two or more identical processors are connected to a single, shared main memory, have full access to all input and output devices, and are controlled by a single operating system instance that treats all ...

  5. Supplementary service codes - Wikipedia

    en.wikipedia.org/wiki/Supplementary_service_codes

    ETSI and 3rd Generation Partnership Project (3GPP) standards, such as GSM and LTE, define supplementary service codes that make it possible to query and set certain service parameters (e.g., call forwarding) directly from mobile devices.

  6. GSMA - Wikipedia

    en.wikipedia.org/wiki/GSMA

    The GSMA is the global administrator of Type Allocation Code (TAC), which is used to create the International Mobile Equipment Identity number that can uniquely identify wireless devices. It allocates official IMEI number ranges to all manufacturers of 3GPP compliant devices and records these ranges and device model information in a database.

  7. Short Message Service technical realisation (GSM) - Wikipedia

    en.wikipedia.org/wiki/Short_Message_Service...

    When the SMSC determines it needs to attempt to deliver a Short Message to its destination, it will send the SMS-PP APDU containing the text message, the "B-Party" (destination phone number) and other details to the Gateway MSC (GMSC) logical component on the SMSC. [2]

  8. SMP - Wikipedia

    en.wikipedia.org/wiki/SMP

    SMP/E (System Modification Program/Extended), IBM mainframe software; Supplementary Multilingual Plane, Unicode characters for historical scripts; SMP (computer algebra system) Symmetric multiprocessing; Security Manager Protocol used in Bluetooth Low Energy; SimpleX Messaging Protocol, a privacy focused messaging protocol.

  9. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.