Glossary of Terms

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BRAS A broadband remote access server (BRAS, B-RAS or BBRAS) routes traffic to and from the digital subscriber line access multiplexers (DSLAM) on an Internet service provider's (ISP) network

Internet Exchange An Internet exchange point (IX or IXP) is a physical infrastructure through which Internet service providers (ISPs) exchange Internet traffic between their networks (autonomous systems). IXPs reduce the portion of an ISP's traffic which must be delivered via their upstream transit providers, thereby reducing the average per-bit delivery cost of their service. Furthermore, the increased number of paths learned through the IXP improves routing efficiency and fault-tolerance.

IPCP In computer networking, Internet Protocol Control Protocol (IPCP) is a network control protocol for establishing and configuring Internet Protocol over a Point-to-Point Protocol link. IPCP uses the same packet exchange mechanism as the Link Control Protocol. IPCP packets may not be exchanged until PPP has reached the Network-Layer Protocol phase, and any IPCP packets received before this phase is reached should be silently discarded.

L2TP In computer networking, Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs). It does not provide any encryption or confidentiality by itself; it relies on an encryption protocol that it passes within the tunnel to provide privacy. Although L2TP acts like a Data Link Layer protocol in the OSI model, L2TP is in fact a Session Layer protocol.

LNS L2TP Network Server (LNS) is a node that acts as one side of an L2TP tunnel endpoint and is a peer to the L2TP access concentrator (LAC). The LNS is the logical termination point of a PPP session that is being tunneled from the remote system by the LAC

MSO Major Service Outage - This is when a problem occurs causing a high volume of our customers to be disconnected. This can either be as a result of problems in our network, our suppliers' networks or in data centers and other links our networks run through.

PEW Planned Engineering Work - This is when we or our suppliers need to do maintenance on our networks or systems in the near future which may or may not affect service.

UPS <p>
<p>Uninterruptible Power Supply<br />Backup power, normally using batteries and generators</p>

VoIP Voice over Internet Protocol is the use of an internet connection for phone calls. Rather than using a phone line in a conventional way to make calls the voice is actually carried as data over a broadband connection and can even be done without a phone line at all via fibre or other means.