Cisco H323 Gateway: Upgrading PRI From 8 To 21 Channels

I have a customer that is upgrading their PRI circuit from 8 channels to 21 channels.  Why?  I have no idea.  Its for faxes only, and they only have 8 fax machines.  So, they have a hosted VoiP system with THIS H323 gateway.  It works pretty good.  Here is the changes I made to the gateway (not on the CUCM, remember, its H323):
config t
int serial0/0/0:23
shut
voice-port 0/0/0:23
shut
controller t1 0/0/0
shut
no pri-group timeslot 1-8,24
pri-group timeslots 1-21,24
no shut
int serial0/0/0:23
no shut
voice-port 0/0/0:23
no shut

dial-peer voice 911 pots
 port 0/0/0:23
translation-profile outgoing outbound_calls
dial-peer voice 1001 pots
port 0/0/0:23
translation-profile outgoing outbound_calls
dial-peer voice 1 pots
 port 0/0/0:23
translation-profile outgoing outbound_calls
dial-peer voice 1003 pots
port 0/0/0:23
translation-profile outgoing outbound_calls

So, one thing to note here.  On the dial-peers, when I shut down the ports, it took the port command off the dial-peer.  Im not sure why, but when you bring the ports back up, it will NOT automatically put the port command back into the dial-peer.  You have to go put it in.  Also, my translation-profile outgoing command is so that I can send out a caller-ID that the Telco wants.