Specifications

Terms and Abbreviations Nur für den internen Gebrauch

A31003-H3580-M103-2-76A9, 01-2009

A-8 HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation

hg-a.fm

NTBBA

Network Termination Broadband Access. The NTBBA provides the network terminator for

the broadband signal portion at the DSL subscriber line. In ADSL connections, this function

is performed by the ADSL controller or the ADSL modem. The ADSL controller transforms

the ADSL signal from the network interface into a mostly hardware-specific user interface

suitable for the PC.

OAM

Operation, Administration, and Maintenance. OAM refers to all equipment that is used to

operate, administer, and maintain networks.

OSPF

Open Shortest Path First. A routing protocol developed by the IETF. It is defined in RFC

1247 and based on the "Shortest Path First" algorithm developed by Edsger Dijkstra.

PAP

Password Authentication Protocol. Authentication procedure based on the point-to-point

protocol, described in RFC 1334. In contrast to CHAP, the PAP protocol transmits the pass-

word for authentication in plaintext.

PBX

Abbreviation of "Private Branch Exchange". A PBX is a telecommunications system.

PCM

Physical Connection Management. Belongs to the functional blocks of Connection Man-

agement (CMT) in the FDDI ring.

PKI

Public Key Infrastructure Environment in which encryption and digital signature services

based on the public key procedures are provided. In the case of this security structure, a

certified party’s public key is authenticated on the basis of the relevant identification fea-

tures by a digital signature from the certification authority (CA). Using PKI provides a trust-

worthy network environment in which communication is protected against unauthorized ac-

cess by encryption and the authenticity of the communication partner is guaranteed by the

digital signature.

PPP

Point to Point Protocol. Protocol for connection setup over dial-up lines (mostly over mo-

dem or ISDN). It supports the transport of a wide variety of network protocols, including the

Internet’s IP protocol.