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  2. Network switching subsystem - Wikipedia

    en.wikipedia.org/wiki/Network_switching_subsystem

    The visited MSC (V-MSC) is the MSC where a customer is currently located. The visitor location register (VLR) associated with this MSC will have the subscriber's data in it. The anchor MSC is the MSC from which a handover has been initiated. The target MSC is the MSC toward which a handover should take

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

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

    The Interworking MSC of the SMSC, on receipt of the MAP mo-ForwardSM message, passes the SMS-PP [2] Application Protocol Data Unit (APDU) containing the text message to the actual Service Centre (SC) of the SMSC for storing, and subsequent "forwarding" (delivery) to the destination address and the SC returns an acknowledgement indicating ...

  4. AXE telephone exchange - Wikipedia

    en.wikipedia.org/wiki/AXE_telephone_exchange

    The latest APZ type is 214 03 which is used as MSC, TSC and HLR Blade in AXE. The latest implementation of AXE is on a blade cluster system [ 2 ] capable of handling up to 8 million subscribers. The core of the switching part was the Group Switch, initially a time-space-time multiplexer capable of switching up to 64K positions or connections.

  5. Mobile switching centre server - Wikipedia

    en.wikipedia.org/wiki/Mobile_switching_centre_server

    The mobile switching station, abbreviated as MSC Server or MSS, is a 2G core network element which controls the network switching subsystem elements. Alternatively or adaptively, MSS can be used in GSM networks as well, if the manufacturer has implemented support for GSM networks in the MSS. Since an immediate upgrade of existing GSM network to ...

  6. GPRS core network - Wikipedia

    en.wikipedia.org/wiki/GPRS_core_network

    GPRS Tunnelling Protocol is the defining IP-based protocol of the GPRS core network. Primarily it is the protocol which allows end users of a GSM or WCDMA network to move from place to place while continuing to connect to the Internet as if from one location at the Gateway GPRS support node (GGSN).

  7. H.248 - Wikipedia

    en.wikipedia.org/wiki/H.248

    The Gateway Control Protocol (Megaco, H.248) is an implementation of the media gateway control protocol architecture for providing telecommunication services across a converged internetwork consisting of the traditional public switched telephone network (PSTN) and modern packet networks, such as the Internet.

  8. Why did I receive an email from MAILER-DAEMON? - AOL Help

    help.aol.com/articles/what-is-a-mailer-daemon...

    When you get a message from a "MAILER-DAEMON" or a "Mail Delivery Subsystem" with a subject similar to "Failed Delivery," this means that an email you sent was undeliverable and has been bounced back to you. These messages are sent automatically and often include the reason for the delivery failure.

  9. Media gateway - Wikipedia

    en.wikipedia.org/wiki/Media_gateway

    Media Gateways are used for transcoding media between PSTN and IP networks. A media gateway is a translation device or service that converts media streams between disparate telecommunications technologies such as POTS, SS7, Next Generation Networks (2G, 2.5G and 3G radio access networks) or private branch exchange (PBX) systems.