Ericsson ECN330 Guia do Utilizador descarregar pdf (Página 103)

EDA System Design

1/1551-HSC 901 35/3 Uen C 2005-12-02

c Non-IP-traffic filtering

2. Separating traffic types in different VLANs within the Access Domain,

for example a separate VLAN for management traffic.

This access scenario imposes no limits to what IP services can be offered.

However, unmanaged access to Telephony over IP service may be

considered inappropriate due to the lack of security and charging options.

Consequently, Figure 60 on page 97 illustrates the use of base band POTS

instead.

Figure 60 Base band POTS with and without Service Selection

10.3.2 Service Selection Using a BRAS

Service selection based on a Broadband Access Server offers a multitude

of access functions integrated in a single entity.

End-user authentication is performed using either PPP or HTTP. In the first

case, the subscriber initiates a PPPoE client on the CPE host in order to

start a PPP session. In the other case, the BRAS presents a web page to

the subscriber on which the login must be performed.

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Ericsson ECN330 Guia do Utilizador Página 103