Every byte of data traveling on the US Signal network moves fast. But when you add Quality of Service (QoS), your important data moves to the head of the line every time. QoS is available throughout the USS IP network core and from the customer premises if US Signal places customer premises equipment (CPE). Add QoS to a switched or routed service and get the benefits of an enhanced Service Level Agreement.

During peak digital rush hour, QoS divides traffic into four classes:

Profiles

For VES, MPLS VPN and DIA services delivered using Ethernet access types, customers must mark traffic as dictated by traffic needs. Specific bandwidth profiles are not available. For MPLS VPN and DIA services delivered using serial TDM connections – or MPLS VPN and DIA services provided in conjunction with Managed Router service – customers can choose from three templates based on their traffic patterns. Each template is designed to address a different traffic structure, dictated by the general service types customers are using.

For traffic without 802.1Q tags, US Signal provides traffic prioritization based on the Differentiated Services Code Point (DSCP) field in the IP Header. Customers must mark all IP packets with the correct DSCP value to gain the advantage of the US Signal QoS features.

For traffic with 802.1Q tags, US Signal provides traffic prioritization based on the 802.1p Class of Service (CoS) field in 802.1Q tagged frames. Customers must mark packets with the desired CoS value in the 802.1p field for all 802.1Q tagged traffic to gain the advantage of the US Signal QoS features.

The table below details customer DSCP and CoS values for each traffic Class:

QoS-enabled traffic within the contracted port speed will be prioritized as follows: