Atm Qos; Traffic Shaping - ZyXEL Communications MSC1024G Series User Manual

Table 152 SHDSL Profile (continued)
LABEL
Line Probing
Enable Mode
Current Condition
SNR Margin [-
10~21]
Worst Case SNR
Margin [-10~21]
Apply
New
Cancel
The bottom part of the screen lists the configured profiles.
Index
Name
Max Rate (kbps)
Min Rate (kbps)
Modify
Delete

13.11 ATM QoS

ATM Quality of Service (QoS) mechanisms provide the best service on a per-flow guarantee.
ATM network infrastructure was designed to provide QoS. It uses fixed cell sizes and built-in
traffic management (see the following section on traffic shaping). This allows you to fine-tune
the levels of services on the priority of the traffic flow.

13.12 Traffic Shaping

Traffic shaping is an agreement between the carrier and the subscriber to regulate the average
rate and fluctuations of data transmission over an ATM network. This agreement helps
eliminate congestion, which is important for transmission of real time data such as audio and
video connections.
MSC1000G/1024G/1224G Series User's Guide
DESCRIPTION
The SHDSL line card and subscriber modem use line probes to determine the
best possible transmission rate. This is used in rate adaptation.
Disable the line probe to have the system skip the rate adaptation phase to
shorten connection set up time.
Select enable (current_condition_ target_SNR) to enable line probing using the
current target Signal to Noise Ratio margin.
Select enable (worst_case_target_SNR) to enable line probing using the worst
case target Signal to Noise Ratio margin.
Type the current condition target Signal to Noise Ratio margin, -10 ~ 21 in dB. You
only configure this if you enable line probing using the current target Signal to
Noise Ratio margin.
Type the worst case Signal to Noise Ratio margin, -10 ~ 21 in dB. You only
configure this if you enable line probing using the worst case target Signal to
Noise Ratio margin.
Click Apply to save the changes in this screen to the system's volatile memory.
The system loses these changes if it is turned off or loses power, so use the
Config Save on the navigation panel and then the Save button to save your
changes to the non-volatile memory when you are done configuring.
While you are modifying a profile, you can click New to start configuring a fresh
profile without saving your changes.
Click Cancel to start configuring the screen again.
This is the port profile index number.
These are the names of individual profiles. The DEFVAL profile always exists and
all of the DSL ports have it assigned to them by default.
This is the maximum transfer rate (in Kbps) for this profile.
This is the minimum upstream transfer rate (in Kbps) for this profile.
Select a profile's Select radio button and click Modify to edit the profile.
Select a profile's Select radio button and click Delete to remove the profile.
Chapter 13 Profile Screens
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