VTech VSP735 Administrator And Provisioning Manual page 35

Enable G.729
Annex B
Quality of Service
Setting
DSCP (voice)
DSCP (signalling)
Signaling Settings
Setting
Local SIP port
Transport
When G.729a/b is enabled, select to enable G.729 Annex B, with
voice activity detection (VAD) and bandwidth-conserving silence
suppression.
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 phone 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 141 and consult your service
provider.
VSP735 Administrator and Provisioning Manual
35 WebUI: System