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Frame Relay connections are often given a committed information rate (CIR) and an allowance of burstable bandwidth known as the extended information rate (EIR). The provider guarantees that the connection will always support the C rate, and sometimes the PRa rate should there be adequate bandwidth.
The MSC sets up and releases the end-to-end connection, handles mobility and hand-over requirements during the call and takes care of charging and real-time prepaid account monitoring. In the GSM mobile phone system, in contrast with earlier analogue services, fax and data information is sent digitally encoded directly to the MSC.
[a] The provider guarantees that the connection will always support the CIR rate, and sometimes the EIR rate provided that there is adequate bandwidth. The PIR, i.e. the CIR plus EIR, is either equal to or less than the speed of the access port into the network.
Eircom Limited, trading as Eir (/ ɛər / AIR; stylised eir), is a large fixed, mobile and broadband telecommunications company in Ireland. The company, which is currently incorporated in Jersey, traces its origins to Ireland's former state-owned monopoly telecommunication provider Telecom Éireann and its predecessors, P&T (the Dept. of Posts and Telegraphs) and before the foundation of the ...
If a router finds a match, it will forward the packet through that route; if not, it will send the packet to its own default gateway. Each router encountered on the way will store the packet ID and where it came from so that it can pass the response packet back to the sender. The packet contains source and destination, not all router hops.
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).
Connection-oriented Ethernet refers to the transformation of Ethernet, a connectionless communication system by design, into a connection-oriented system. The aim of connection-oriented Ethernet is to create a networking technology that combines the flexibility and cost-efficiency of Ethernet with the reliability of connection-oriented protocols.
The ACS requests a connection from the device by visiting a negotiated URL and performing HTTP Authentication. A shared secret is also negotiated with the device in advance (e.g. previous provisioning session) to prevent the usage of CPEs for DDoS attacks on the provisioning server (ACS).