30Administrator Guide – AzaCall200 VOIP Multi-Protocol Gateway5.8. QoS5.8.1. QoS ConfigurationOur VOIP gateway device allows a user to attach ToS (Type of Service) or DSCP (DifferentiatedServices Code Point) information on outgoing packets leaving the device’s WAN interface so thatthe packets may be processed with higher priority.User can select the QoS type of the packets coming out from the gateway device’s WANinterface. If the type of QoS is DiffServ, user can also specify the different values for SignalDSCP and Media DSCP. Both ToS and DSCP are supported for the VOIP packets sent out fromthe gateway device.Figure 22 Qos Configuration WindowItem DescriptionQos Type The type of Qos that can be placed on outgoing packets, DiffServ or Tos.ToS ToS defines the type of service. The value of Tos is usually between 0~15.Signal DSCP The value of Differentiated Services Code Point for Signal.Media DSCP The value of Differentiated Services Code Point for Media