[asterisk-users] Why is this happening?

[Matt]

In my IAX config file I have:
[general]
bindport = 4569           ; Port to bind to (IAX is 4569)
bindaddr = 0.0.0.0    ; Address to bind to (all addresses on machine)
delayreject=yes
disallow=all
allow=ulaw
allow=gsm
jitterbuffer=yes
forcejitterbuffer=yes
mailboxdetail=yes
dropcount=3
minexcessbuffer=80
jittershrinkrate=1
notransfer=yes


allanrobertson-  209.23.224.97   (D)  255.255.255.255  1207          OK (33 ms)

Why is it running on port 1207?