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When a subscriber requests a PDP context, the SGSN will send a create PDP context request GTP-C message to the GGSN giving details of the subscriber's request. The GGSN will then respond with a create PDP context response GTP-C message which will either give details of the PDP context actually activated or will indicate a failure and give a ...
One PDP context may have several (secondary) PDP contexts and NSAPI. The NSAPI is an integer value within the PDP context header. In the UMTS system the data connection between a GPRS Core Network and a mobile station is identified using an NSAPI, that identifies as well a radio access bearer.
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).
Networks and mobile devices with GPRS started to roll out around the year 2001. [2] At the time of introduction it offered for the first time [ b ] seamless mobile data transmission using packet data for an "always-on" connection (eliminating the need to "dial-up"), [ 3 ] providing improved Internet access for web , email , WAP services, and ...
The HLR will set a flag against the destination account, indicating that it is unavailable for short message delivery, and store the SMSC's address in the Message Waiting Data (MWD) list for the destination party. Valid flags are Mobile Not Reachable Flag (MNRF), Memory Capacity Exceeded Flag (MCEF) and Mobile Not Reachable for GPRS (MNRG).
System Architecture Evolution (SAE) is the core network architecture of mobile communications protocol group 3GPP's LTE wireless communication standard.. SAE is the evolution of the GPRS Core Network, but with a simplified architecture; an all-IP Network (AIPN); support for higher throughput and lower latency radio access networks (RANs); and support for, and mobility between, multiple ...
Devices while registered to the network, may not have a data session (PDP Context in the GSM world) established. A separate IP->MSISDN table has to be maintained in Connection Oriented Push. Typically, the PPG or another part of the gateway has to receive RADIUS or other accounting packets in order to support Connection Oriented Push.
EIR is a system that handles real-time requests to check the IMEI (checkIMEI) of mobile devices that come from the switching equipment (MSC, SGSN, MME). The answer contains the result of the check: whitelisted – the device is allowed to register on the network. blacklisted – the device is prohibited from registering on the network.