ZyXEL Communications SLC1224, Руководство пользователя

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SLC1224 User’s Guide
Chapter 3 G.SHDSL Port Setup 43
3.11 VC Profile Setup
Do the following to open the VC Profile Setup screen:
1 Click a DSL port's index number in the SLC Port Setup screen to go to the Edit Port
Setup screen.
2 Click Channel Setup in the Edit Port Setup screen to go to the Channel Setup screen.
3 Click VC Profile in the Channel Setup screen to open the VC Profile Setup screen.
Figure 16 VC Profile Setup
The following table describes the labels in this screen.
Table 11 VC Profile Setup
LABEL DESCRIPTION
Channel Setup Click this link to go to the Channel Setup screen.
Profile Name This name identifies the profile.
Encap. This field displays the type of encapsulation ( llc or vc ).
AAL This field displays the ATM Adaptation Layer (AAL).
Class This field displays the type of ATM traffic class: cbr (constant bit rate), vbr
(variable bit rate) or ubr (unspecified bit rate).
PCR This is the Peak Cell Rate (PCR), the maximum rate at which the sender can send
cells.
CDVT This field displays the accepted tolerance of the difference between a cell¡¦s
transfer delay and the expected transfer delay.
SCR / MCR The Sustained Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. SCR applies with the vbr traffic class.
Minimum Cell Rate (MCR) is the minimum rate at which the sender can send cells.
BT / NRM 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.