Aastra 9000i Series Administrator's Manual page 680

Configuring DNS SRV Record Pre-caching
5 Enter the parameter, "sip dnx srvX port, where "X" is a value from 1 to 4.
Enter a value for the port number on the target host. Valid values are 0 to 65535. Default is 0. For
example:
sip dns srv1 port: 5060
6 Enter the parameter, "sip dnx srvX target, where "X" is a value from 1 to 4.
Enter a value for the DNS server target. Valid values are the host name or a fully qualified domain
name. For example:
sip dns srv1 target: bigbox.example.com
7 Save and close the file.
8 Place the aastra.cfg file on the configuration server and download to the phones.
41-001343-01 Rev 02, Release 3.2.2 6-59