ZyXEL Communications P-660RU-T1 v3, Руководство пользователя, Страница: 62 / 230

Chapter 7 Internet Setup
P-660RU-Tx v3 User’s Guide
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7.2.1 Dynamic IP Address
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)
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)
LABEL DESCRIPTION