Atm - Planet VDR-301n User Manual

5.3.3 ATM

Choose Setup > ATM and the page is displayed below. On this page, you can configure the parameters of the
ATM, including QoS, PCR, CDVT, SCR and MBS.
The following table describes the parameters:
Field
VPI
VCI
QoS
PCR
Figure 5-23 ATM
Description
Virtual Path Identifier. This is read-only field and is selected on the
Select column of the Current ATM VC Table.
Virtual Channel Identifier. This is read-only field and is selected on the
Select column in the Current ATM VC Table. The VCI, together with
VPI, is used to identify the next destination of a cell as it passes through
the ATM switch.
Quality of Server, a characteristic of data transmission that measures
how accurately and how quickly a message or data is transferred from a
source host to a destination host over a network. The four QoS options
are

UBR (Unspecified Bit Rate): When UBR is selected; the SCR and
MBS fields are disabled.

CBR (Constant Bit Rate): When CBR is selected; the SCR and
MBS fields are disabled.

nrt-VBR (non-real-time Variable Bit Rate): When nrt-VBR is
selected, the SCR and MBS fields are enabled.

rt-VBR (real-time Variable Bit Rate): When rt-VBR is selected, the
SCR and MBS fields are enabled.
Peak Cell Rate, measured in cells/sec., is the cell rate which the source
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User Manual of VDR-301N