How do I Split PRI Interface Serial0/0:15 into subinterfaces (on 3640)

[COPA]

I currently have the following 3640 Interface config to enable Remote Sites to connect through to the corporate network via ISDN , using Static Addresses.<br><br>&nbsp;interface Serial0/0:15<br>&nbsp;&nbsp;ip address 10.173.0.250 255.255.255.0<br>&nbsp;&nbsp;encapsulation ppp<br>&nbsp;&nbsp;dialer idle-timeout 60<br>&nbsp;&nbsp;dialer-group 1<br>&nbsp;&nbsp;ipx network B10<br>&nbsp;&nbsp;no ipx route-cache<br>&nbsp;&nbsp;ipx watchdog-spoof<br>&nbsp;&nbsp;ipx spx-spoof<br>&nbsp;&nbsp;isdn switch-type primary-net5<br>&nbsp;&nbsp;isdn incoming-voice modem 64<br>&nbsp;&nbsp;no peer default ip address<br>&nbsp;&nbsp;snapshot server 5<br>&nbsp;&nbsp;ppp authentication chap pap callin<br>&nbsp;&nbsp;hold-queue 75 in<br>&nbsp;!<br>&nbsp;<br>I am now starting to add random ISDN dialup users (PSTN is taken care of already) , but the only configuration options I want put in at the workstation end is the IP address of the Winserver - I believe I can do this at router level , but I'll leave that to a later date - but in order for this to work for IP I need to utilise the &quot;Peer Default IP Address&quot; command with an associated Pool of IP numbers. When I do this on the existing interface the static addresses no longer communicate!<br><br>How do I set up a second subinterface for just random dialup users who will pick up an IP address generated from the Pool , and make sure all Random users come in via this interface???&nbsp;&nbsp;- I want to leave the first 6 channels 'dedicated' for my Static Routes.