Mapping; Table 8-5: Edit Dscp Settings- Parameter Descriptions; Figure 8-9: Qos - Edit Dscp Settings - AudioCodes MP-202 User Manual

2. To edit an existing entry, click its Edit action icon. To add a new entry, click the New
Entry link. In both cases, the 'Edit DSCP Settings' screen will appear (refer to the
figure).
3. Configure the following fields:

Table 8-5: Edit DSCP Settings- Parameter Descriptions

Parameter
DSCP Value (hex)
802.1p Priority
Click 'OK' to save the settings.
Note that the DSCP value overriding the priority of incoming packets with an unassigned
value (priority 0, assumed to be a no-priority-set) is '0x0' (refer to the figure). By default,
this value is mapped to 802.1p priority level '0 -Low', which means that such packets will
receive the lowest priority.
8.4 802.1p Mapping
The IEEE 802.1p priority marking method is a standard for prioritizing network traffic at the
data link/Mac sub-layer. 802.1p traffic is simply classified and sent to the destination, with
no bandwidth reservations established.
The 802.1p header includes a 3-bit prioritization field, which allows packets to be grouped
into eight levels of priority. The gateway maps these eight levels to three main priorities:
high, medium and low. By default, values six and seven are mapped to high priority, which
may be assigned to network-critical traffic. Values four and five are mapped to medium
priority, which may be applied to delay-sensitive applications, such as interactive video and
voice. Values three to zero are mapped to low priority, which may range from controlled-
load applications down to 'loss eligible' traffic. The zero value is normally used for best-
effort traffic. It is the default value for traffic with unassigned priority.
MP-202 Telephone Adapter

Figure 8-9: QoS - Edit DSCP Settings

Enter a hexadecimal number that will serve as the
DSCP value.
Select a 802.1p priority level from the combo box
(each priority level is mapped to low/medium/high
priority).
72
Description
LTRT-50604
MP-202