target
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... ACK).
We define TARGET as the value of the maddr parameter of the URI, if
present, otherwise, the host ...
...
Otherwise, if no transport protocol is specified, but the TARGET is a
numeric IP address, the client ...
... SIPS URI. Similarly, if no transport protocol is specified,
and the TARGET is not numeric, but an explicit port is provided, the
client ...
... transport protocol or port is specified, and the
target is not a numeric IP address, the client SHOULD perform a NAPTR ...
... AAAA records will be used.
If the TARGET was not a numeric IP address, and no port was present
...
...
The SRV records for a particular target can be set up so that there
is a single record with a low value for the priority field
...