GRT-501 G.SHDSL.bis Bridge Router User’s Manual

4.2.2 WAN

The GRT-501 supports up to 8 PVCs. WAN 1 was configured via BASIC except QoS. If you want to setup the PVC 2 to 7, the parameters are setup in the page of WAN under ADVANCED. On the other hand, you do not need to setup WAN except you apply two or more Internet Services with ISPs.

Web UI Configuration

Step 1.

Click WAN under the Advanced menu for configure the WAN parameters.

Step 2.

Enter the parameters:

If WAN Protocol is PPPoA or PPPoE with dynamic IP, leave the default WAN IP Address and Subnet Mask as default setting. The system will ingore the IP Address and Subnet Mask information, but erasion or blank in default setting will cause system error.

If the WAN Protocol is IPoA or EoA, leave the ISP parameters as default setting. The system will ingore the information, but erasion or blank in default setting will cause system error.

QoS (Quality of Service):

The Traffic Management Specification V4.0 defines ATM service cataloges that describe both the traffic transmitted by users onto a network as well as the Quailty of Service that the network need to provide for that traffic.

UBR (Unspecified Bit Rate) is the simplest service provided by ATM networks. There is no guarantee of anything. It is a primary service used for transferring Internet traffic over the ATM network.

CBR (Constant Bit Rate) is used by connections that requires a static amount of bandwidth that is avilable during the connection life time. This bandwidth is characterized by Peak Cell Rate (PCR). Based on the PCR of the CBR traffic, specific cell slots are assigned for the VC in the schedule table. The ATM always sends a signle cell during the CBR connection’s assigned cell slot.

VBR-rt (Varible Bit Rate real-time) is intended for real-time applications, such as compressed voice over IP and video comferencing, that require tightly constrained delays and delay variation. VBR-rt is characterized by a peak cell rate (PCR), substained cell rate (SCR), and maximun burst rate (MBR).

VBR-nrt (Varible Bit Rate non-real-time)

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