Yealink SIP-T48G Administrator's Manual page 647

Procedure
QoS can be configured using the configuration files or locally.
Configuration File
Local
Details of Configuration Parameters:
Parameters
network.qos.rtptos
Description:
Configures the DSCP (Differentiated Services Code Point) for voice packets.
The default DSCP value for RTP packets is 46 (Expedited Forwarding).
Note: If you change this parameter, the IP phone will reboot to make the change
take effect.
Web User Interface:
Network->Advanced->Voice QoS (0~63)
Phone User Interface:
None
network.qos.signaltos
Description:
Configures the DSCP (Differentiated Services Code Point) for SIP packets.
The default DSCP value for SIP packets is 26 (Assured Forwarding).
Note: If you change this parameter, the IP phone will reboot to make the change
take effect.
<y0000000000xx>.cfg
Web User Interface
Permitted Values
Integer from 0 to 63
Integer from 0 to 63
Configuring Advanced Features
Configure the DSCPs for
voice packets and SIP
packets.
Parameters:
network.qos.rtptos
network.qos.signaltos
Configure the DSCPs for
voice packets and SIP
packets.
Navigate to:
http://<phoneIPAddress>/se
rvlet?p=network-adv&q=lo
ad
Default
46
26
627