Static Dns Cache - Yealink SIP-T2 Series Administrator's Manual

1-TCP
2-TLS
Values
3-DNS-NAPTR, if no server port is given, the IP phone performs the DNS NAPTR and SRV queries for the
service type and port.
Default 0
Web UI Account->Register->SIP Server Y->Transport
Parameter account.X.naptr_build
It configures the way of SRV query for the IP phone to be performed when no result is returned from
Description
NAPTR query.
0-SRV query using UDP only
Permitted
Values
1-SRV query using UDP, TCP and TLS.
Default 0
Parameter sip.dns_transport_type
Description It configures the transport protocol the IP phone uses to perform a DNS query.
0-UDP
Permitted
Values
1-TCP
Default 0
Parameter static.network.dns.query_timeout
It configures the interval (in seconds) at which the phone retries to resolve a domain name when the DNS
Description
server does not respond.
Permitted
0 to 65535
Values
Default 3
Parameter static.network.dns.retry_times
Description It configures the retry times when the DNS server does not respond.
Permitted
0 to 65535
Values
Default 2
[1]
X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; for T52S/T42G/T42S, X=1-12; for T41P/T41S/T27G,
X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
[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.
[1]
[3]
[3]
<MAC>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
Account Settings
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