VTech VSP600 Administrator And Provisioning Manual page 18

Quality of Service
Setting
DSCP (voice)
DSCP (signalling)
Signaling Settings
Setting
Local SIP port
Transport
VSP600/VSP601 Administrator and Provisioning Manual
Description
Enter the Differentiated Services Code Point (DSCP) value from the
Quality of Service setting on your router or switch.
Enter the Differentiated Services Code Point (DSCP) value from the
Quality of Service setting on your router or switch.
Description
Enter the local SIP port.
Select the SIP transport protocol:
 TCP (Transmission Control Protocol) is the most reliable protocol
and includes error checking and delivery validation.
 UDP (User Datagram Protocol) is generally less prone to
latency, but SIP data may be subject to network congestion.
 TLS (Transport Layer Security)—the VSP600 supports secured
SIP signalling via TLS. Optional server authentication is
supported via user-uploaded certificates. TLS certificates are
uploaded using the configuration file. See "file" Module:
Imported File Settings on page 88 and consult your service
provider.
18 WebUI: System