[cisco-voip] PRI channels not available

[Joseph Mays]

I have an IAD2400 with a channel group using 22 channels on one interface.

Cisco IOS Software, 2400 Software (C2400-IS-M), Version 12.3(11)T10, RELEASE SOFTWARE (fc4)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Fri 03-Mar-06 17:49 by dchih

ROM: System Bootstrap, Version 12.3(7r)T2, RELEASE SOFTWARE (fc1)

glassdoctor uptime is 6 days, 7 hours, 5 minutes
System returned to ROM by power-on
System image file is "flash:current.bin"

Cisco IAD2431 (R527x) processor (revision 4.1) with 119808K/11264K bytes of memory.
Processor board ID FHK1046F3JE
R527x CPU at 225MHz, Implementation 40, Rev 3.1
1 On-Board Eight FXS Analog Voice Module V2.1
1 FastEthernet interface
2 Serial interfaces
2 Channelized T1/PRI ports
DRAM configuration is 64 bits wide with parity disabled.
63K bytes of non-volatile configuration memory.
System fpga version is 250027
System readonly fpga version is 250025
Option for system fpga is 'system'.
62720K bytes of ATA System CompactFlash (Read/Write)
0K bytes of ATA Slot0 CompactFlash (Read/Write)

Configuration register is 0x2102

I want to use the remaining 2 channels for a pri-group for, essentially, one analog voice line.

controller T1 0/0
 framing esf
 linecode b8zs
 channel-group 0 timeslots 1-22 speed 64

But it won't let me enter the pri-group definition under the controller. Whenever I try it says no resources are available. 

glassdoctor(config-controller)#pri-group timeslots 23-24
%Channel-group already created. No more resource
glassdoctor(config-controller)#

I have done this before. Why would it not be allowing me to create the pri-group now?

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