Specifications

VoiceFinder VoIP Gateway Configuration Guide (APOS 2.0) Release Version 3.1
AddPac Technology Co., LTD
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2.4.2. Configuring PPPoE
PPP(Point to Point Protocol) is one of the standards for transmitting data on WAN link, which is
stated on RFC1661. It is the transmission protocol which can be used for not only Synchronous
WAN(SERIAL) line but also Asynchronous WAN(Dial Up Line). PPP is the standard protocol
which is different from HDLC and it guarantees the interoperability.
VoiceFinder Gateway can be connected to the rear part of ADSL modem. In this case, the
gateway to support PPP and Encapsulation of Ethernet interface is to be configured to PPPoE.
PPP is contained in the following 2 different types of protocols:
z LCP (Link Control Protocol) : LCP is used to perform determination encapsulation format,
limiting packet size, authentication on a link, determining normal operation time and
failure time of the link, error detection and link termination
z NCP (Network Control Protocol) : NCP is used to communicate and connect to the
protocols of the network layer of OSI 7 Model
When PPP Encapsulation Option is selected from Ethernet interface of VoiceFinder Gateway,
PPPoE is enabled. The software of the gateway supports CHAP(Challenge Handshake
Authentication Protocol) and PAP(Password Authentication Protocol) which are used for
Authentication Option and Magic Number. The software always sends Magic Number
Configuration Option only when it is set to Authentication Option.
Information