IAX2 show peers - shows trunk available with only 1 side configured

Just curious about the behavior of my IAX configurations. If I configure one side of the trunk on a PBX and stat the line, it shows that the trunk is available. Is this normal behavior that I haven’t noticed?

After I configure ONE side of an IAX trunk then do a “IAX2 SHOW PEERS” it shows the trunk as "OK"
Ex:
COR07_WSA01/T 192.168.208.34 (S) 255.255.255.255 4569 (T) (E) OK (23 ms)

but haven’t configured on the other end yet. The other PBX is available from a network perspective, but no trunks are yet configured. If I were to drop the NIC/reboot the far end, the trunk will then report “UNAVAILABLE”

Below is what I’m using for trunk configurations for my IAX.

username=COR07_WSA01
type=friend
trunk=yes
transfer=no
secret=a8s9df7a09s8df7a08sdf7a
qualifyfreqok=25000
qualify=yes
host=192.168.208.34
forceencryption=yes
encryption=yes
context=from-internal
auth=md5

I guess I always assumed that to qualify, the trunk needed to be configured on the other side (user/pass etc) but I guess its just a glorified ping.