Using cPOS/STM-1 board and VRP Version 5.30R0219 you can't delete an E1/T1 channel configured before apply "SHUTDOWN" on whole controller cPOS.
This message will appear:
[NE40-LAB-Cpos3/0/0]undo e1 3 channel-set 0
Info:Cann't delete the channel, please shutdown the controller first.
a GCRMS ticket was opened 1661443 and the answer was that they'll solve it in a new vrp version. The deadline is November 2006.
Please check a file attched.
To delete an E1/T1 channel on cPOS really you should apply "shutdown" command on controller cPOS first. No way.