Routed/Pppoa Mode - Ericsson HM220d User Manual

5.3.1

Routed/PPPoA mode

Figur 42: Configuration wizard - Routed/PPPoA mode
Set up the modem in Routed/PPPoA mode
For the Routed/PPPoA mode, information on VP/VC identifiers and some local network
information has to be set. Refer to your ISP/service provider documentation when
entering values or changing default settings.
VP and VC identifiers
Asynchronous Transfer Mode (ATM) is the technology used for data transmission. The
data is transmitted over virtual channels that are designated by specific unique identifiers
(virtual channel identifiers or VCIs). There can be multiple VCIs in one virtual path and
the virtual path also has a unique virtual path identifier (VPI).
The parameters for VP and VC should be one pair identifying DSLAM (equipment at the
ISP side of the ADSL line) and ISP router. This pair should be provided by the access
network operator.
Encapsulation type
When data is transferred via ATM Virtual Channels it is encapsulated using a specific
method. By default, the Routed/PPPoA mode uses VC Mux (VC Multiplexing), which
uses a separate VC for each carried protocol. The second available method is LLC
(Logical Link Control) encapsulation, which allows multiplexing of multiple protocols
over a single ATM virtual circuit. Refer to your ISP/service provider documentation.
Password handling
The Point-to-Point protocol (PPP) is used by the modem to establish connections over
the ADSL ATM network. When identifying your modem (password handling) an
authentication protocol is used which can be either PAP (Password Authentication
Protocol) or CHAP (Challenge-Handshake Authentication Protocol). Refer to your
ISP/service provider documentation.
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Configuring the modem
EN/LZT1083982 R4
2000-12-07