Ipqos Overview; Ipqos Parameters - ZyXEL Communications MSC1024G Series User Manual

Table 164 Profile VoIP H248 Screen
LABEL
Apply
New
Cancel
Index
Name
Select
Modify
Delete

13.23 IPQoS Overview

Quality of Service (QoS) refers to both a network's ability to deliver data with minimum delay,
and the networking methods used to control the use of bandwidth. Without QoS, all traffic data
is equally likely to be dropped when the network is congested. This can cause a reduction in
network performance and make the network inadequate for delay-sensitive applications such
as VoIP or video-on-demand (VOD).
Configure IPQoS to group and prioritize downstream application traffic in queues and fine-
tune network performance.
• IPQoS applies only to the downstream traffic (traffic going to the subscribers).
• IPQoS limits the data rate of traffic flowing through the Device's physical queues.
• You can use 1, 2, 4, or 8 queues.
• A VLC13XXG port connection that uses or falls back to ADSL2+ mode uses IPQoS
instead of ATM QoS.

13.23.1 IPQoS Parameters

Setting up IPQoS involves these parameters:
• PIR (Peak Information Rate): This is the maximum data rate allowed for the downstream
traffic (traffic flowing to the subscribers).
• CIR (Committed Information Rate): This is the guaranteed data rate for the downstream
traffic.
• PBS (Peak Burst Size): This is the maximum burst size allowed for the downstream traffic
when the burst data rate is between the predefined PIR and CIR.
• CBS (Committed Burst Size): This is the guaranteed burst size for the downstream traffic
when the burst data rate is smaller than the predefined CIR.
MSC1000G/1024G/1224G Series User's Guide
DESCRIPTION
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 an incremental number indicating the order in which the H.248
profiles were created.
This is the name of the H.248 profile.
Select the H.248 profile you wish to load or delete.
Select a H.248 profile and click this in order to edit its configuration.
Select a H.248 profile and click this to delete the profile. Once deleted,
information cannot be retrieved.
Chapter 13 Profile Screens
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