asterisk users - Sep 2005 - SIP port assignment for user agents registering to Asterisk.

I was wondering if anyone knows why when I register a user agent like
XLite with Asterisk I am noticing that the port assignment on the "sip
show peers" command shows the port to be different than any of the other
user agents. The other user agents are logging in from different
networks from all over the internet. Here is a sample of my table when I
issue the command:
Ipbx1*CLI>sip show peers
 
Name/username                         Host                 Dyn Nat ACL
Mask                   Port     Status
cydalgw1/216.90.228.254    216.90.228.254               255.255.255.255
5060     OK (14 ms)
steve/steve                         68.113.199.172   D     N
255.255.255.255                  62784   Unmonitored
hooman7/hooman7              68.88.66.248      D     N   255.255.255.255
5060     UNREACHABLE
 
I am using the xlite soft phone. I tried other phones but got the same
result. Can anyone give me a clue as to what is going on? I figure my
laptop might be screwed up or something. 
 
Steve 
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