Yealink SIP-T54S Administrator's Manual page 791

Parameter
Port Identify the port number to be used.
Target Identify the actual host for an A query.
SRV query returns two records. The two SRV records point to different hosts and have the same
priority 0. The weight of the second record is higher than the first one, so the second record
will be picked first. The two records also contain a port "5060", the IP phone uses this port. If
the Target is not a numeric IP address, the IP phone performs an A query. So in this case, the IP
phone uses "server1.yealink.pbx.com" and "server2.yealink.pbx.com" for the A query.
A (Host IP Address)
The IP phone performs an A query for the IP address of each target host name. Example of A
records:
Server1.yealink.pbx.com IN A
Server2.yealink.pbx.com IN A
The IP phone picks the IP address "192.168.1.14" first.
Procedure
SIP Server Domain Name Resolution can be configured using the following methods.
Central Provisioning
(Configuration File)
Web User Interface
Details of Configuration Parameters:
Parameters
account.X.sip_server.Y.transport_type
(X ranges from 1 to 16, Y ranges from 1 to 2)
Description:
Configures the transport method the IP phone uses to communicate with the SIP server
for account X.
Description
192.168.1.13
192.168.1.14
Configure the transport method on the IP
phone.
Parameters:
<MAC>.cfg
account.X.sip_server.Y.transport_type
account.X.naptr_build
Configure the transport type on the IP
phone.
Navigate to:
http://<phoneIPAddress>/servlet?p=acco
unt-register&q=load&acc=0
Configuring Advanced Features
Permitted Values
0, 1, 2 or 3
Default
0
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