Advanced
Network
Settings
DNS Refresh
Timer (m)
Configures the refresh time (in minutes) for DNS query. If set to “0”, the phone will use the DNS query TTL
from DNS server response.
The default setting is 0m.
DNS Failure
Cache
Duration (m)
Configures the duration (in minutes) of previous DNS cache when DNS query fails. If set to “0”, the feature
will be disabled. Note: Only valid for SIP registration.
The default setting is 0m.
IPv4 Preferred
DNS1 Server
This field specifies the IPv4 preferred DNS1 server for the user.
IPv4 Preferred
DNS2 Server
This field specifies the IPv4 preferred DNS2 server for the user.
Enable LLDP
Enables the LLDP (Link Layer Discovery Protocol) feature on the phone system. If it is set to “Yes”, the
phone system will broadcast LLDP PDU to advertise its identity and capabilities and receive same from a
physical adjacent layer 2 peer.
The default setting is “No”.
LLDP TX
Interval (s)
Configures the interval the phone sends LLLD-MED packet.
The default setting is 30s.
Enable CDP
Configures whether to enable CDP to receive and/or transmit information from/to CDP-enabled devices.
The default setting is “Yes”.
Layer 3 QoS
for SIP
Defines the Layer 3 packet’s QoS parameter for SIP messages in decimal pattern. This value is used for IP
Precedence, Diff-Serv or MPLS.
The default setting is 26 it is equivalent to the DSCP name constant AF31.
Layer 3 QoS
for Audio
Defines the Layer 3 packet’s QoS parameter for RTP messages in decimal pattern. This value is used for IP
Precedence, Diff-Serv or MPLS.
The default setting is 46 it is equivalent to the DSCP name constant EF.
Layer 3 QoS
for Video
Defines the Layer 3 packet’s QoS parameters for H.264 messages in decimal pattern. This value is used for
IP Precedence, Diff-Serv or MPLS.
The default setting is 34 it is equivalent to the DSCP name constant AF41.
HTTP/HTTPS
User-Agent
Sets the user-agent for phonebook and screen saver.
SIP User-
Agent
Sets the user-agent for SIP.
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