Yealink W53P

Account Settings
107
service type and port.
Default 0
Web UI Account->Register->SIP Server Y->Transport
Parameter
account.X.naptr_build
[1]
<MAC>.cfg
Description
It configures the way of SRV query for the IP phone to be performed when no result is returned from
NAPTR query.
Permitted
Values
0-SRV query using UDP only
1-SRV query using UDP, TCP and TLS.
Default 0
Parameter sip.dns_transport_type <y0000000000xx>.cfg
Description It configures the transport protocol the IP phone uses to perform a DNS query.
Permitted
Values
0-UDP
1-TCP
Default 0
Parameter
static.network.dns.query_timeout
[3]
<y0000000000xx>.cfg
Description
It configures the interval (in seconds) at which the phone retries to resolve a domain name when the
DNS server does not respond.
Permitted
Values
0 to 65535
Default 3
Parameter
static.network.dns.retry_times
[3]
<y0000000000xx>.cfg
Description It configures the retry times when the DNS server does not respond.
Permitted
Values
0 to 65535
Default 2
[1]
X is the account ID. X=1-8.
[2]
Y is the server ID. Y=1-2.
[3]
If you change this parameter, the IP phone will reboot to make the change take effect.
Static DNS Cache
Failover redundancy can only be utilized when the configured domain name of the server is resolved to multiple IP
addresses. If the IP phone is not configured with a DNS server, or the DNS query returns no result from a DNS server,
you can statically configure a set of DNS NAPTR/SRV/A records into the IP phone. The IP phone will attempt to resolve
the domain name of the SIP server with static DNS cache.
Support for negative caching of DNS queries as described in RFC 2308 is also provided to allow faster failover when
prior DNS queries have returned no results from the DNS server.
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