ZyXEL Communications IES-1248-51 Betriebsanweisung PDF herunterladen (Seite 147)

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Chapter 17 xDSL Profiles Setup

IES-1248-51V User’s Guide

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SCR The Sustained Cell Rate (SCR) sets the average cell rate (long-term)

in cells per second that can be transmitted. SCR applies with the vbr

traffic class.

BT Burst Tolerance (BT) is the maximum number of cells that the port is

guaranteed to handle without any discards. BT applies with the vbr

traffic class.

Select

Modify

Select a VC profile’s Select radio button and click Modify to edit the

VC profile

Delete Select a VC profile’s Select radio button and click Delete to remove

the VC profile

The rest of the screen is for PVC configuration.

Name When editing a profile, this is the name of this profile. When adding a

profile, type a name for the profile. You can use up to 31 ASCII

characters; spaces are not allowed.

Encap Select the encapsulation type (LLC or VC) for this port.

Class Select CBR (constant 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 VBR

(real time variable bit rate) or NRT-VBR (non real time variable bit

rate) for bursty traffic and bandwidth sharing with other applications.

PCR The Peak Cell Rate (PCR) is the maximum rate at which the sender

can send cells. PCR applies with all of the ATM traffic classes. You can

type a number of (ATM) cells per second in the first field or type a

number of kilobytes per second in the second field to have the system

automatically compute the number of ATM cells per second.

CDVT Cell Delay Variation Tolerance (CDVT) is the accepted tolerance of the

difference between a cell’s transfer delay and the expected transfer

delay. CDVT applies with all of the ATM traffic classes. Type the CDVT

here.

SCR The Sustained Cell Rate (SCR) sets the average cell rate (long-term)

that can be transmitted. Type the SCR, which must be less than the

PCR. SCR applies with the VBR traffic classes. You can type a number

of (ATM) cells per second in the first field or type a number of

kilobytes per second in the second field to have the system

automatically compute the number of ATM cells per second.

BT Burst Tolerance (BT) sets a maximum number of cells that the port is

guaranteed to handle without any discards. Type the BT here. BT

applies with the VBR traffic classes.

Add Click Add to save your changes to the IES-1248-51V’s volatile

memory. The IES-1248-51V loses these changes if it is turned off or

loses power, so use the Config Save link on the navigation panel to

save your changes to the non-volatile memory when you are done

configuring.

Cancel Click Cancel to start configuring the screen again.

Table 27 VC Profile (continued)

LABEL DESCRIPTION

1 2 ... 142 143 144 145 146 147 148 149 150 151 152 ... 653 654

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