Справочник Пользователя для ZyXEL Communications P-660RU-Tx

 Chapter 7 Internet Setup

P-660RU-Tx User’s Guide

In the Interface Setup > Internet screen, select Dynamic IP Address from 
the ISP field to display the following screen.

Figure 22   Interface Setup > Internet (Dynamic IP)

QoS
ATM QoS

Select CBR (Continuous Bit Rate) to specify fixed (always-on) 
bandwidth for voice or data traffic. Select UBR (Unspecified Bit Rate) 
for applications that are non-time sensitive, such as e-mail. Select 
rtVBR (real-time Variable Bit Rate) for applications with bursty 
connections that require closely controlled delay and delay variation. 
Select nrtVBR (non real-time Variable Bit Rate) for connections that 
do not require closely controlled delay and delay variation.

PCR

Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find 
the Peak Cell Rate (PCR). This is the maximum rate at which the 
sender can send cells. Type the PCR in this field.

SCR

The Sustain Cell Rate (SCR) sets the average cell rate (long-term) 
that can be transmitted. Type the SCR, which must be less than the 
PCR. Note that system default is 0 cells/sec. 

MBS

Maximum Burst Size (MBS) refers to the maximum number of cells 
that can be sent at the peak rate. Type the MBS, which is less than 
65535. 

Encapsulation

Select the connection type supported by your ISP. The next fields vary 
depending on what connection type you use. See the following 
sections for more details.

SAVE

Click this to save your changes.

DELETE

Click this to restore the PVC to default settings.

Table 11   Interface Setup > Internet (continued)