I have a remote site with a VWIC2-2MFT-T1/E1 Module in a Cisco 2811 router. They are trying to configure a PRI group underneath the controller interface. However the command is not being accepted. Customer has added the ISDN switch type statement (isdn switch-type primary-5ess)in the global area. The following error is generated when configuring "pri-group timeslots 1-24".
pri-Group statement is not available underneath the controller interface
Serial interfaces are not available either. The IOS is 12.4(9)T6. I found a bug similar to this issue but was in 12.2 code.