Hello, If your switch´s are with Qos Feature activate, you need include command for trusted marking originated of application. If Qos feature not active in your switch´s the command is not necessary. The phisical phones mark the packets with DSCP EF....

Hello, If your switch´s are with Qos Feature activate, you need include command for trusted marking originated of application. If Qos feature not active in your switch´s the command is not necessary. The phisical phones mark the packets with DSCP EF....