Client Access Ports

All,

I am trying to expand my knowledge base, so be kind.  I took a look at the
NETSTAT *CNN.  For all of the PC's that connect with C/A on the 10.10.1.xxx
part of our network they all have one connection to port 8470 (Central
server is used when a Client Access license is required, and also for
downloading translation tables) and to port 23 (TELNET).  Our remote
locations which are identified by 10.10.2.xxx etc have the port 23
connection but not port 8470. Can someone point me to the reason or the next
place to look ?
As far as I know, everything is the same except for location of the pc and
what the IP address is. 
Can someone please explain this to me ?

TIA,
Cyndi B
IHFA 
Boise, ID 
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