I have a 3640 cisco router with IOS Enterprise w/ SNASW.
The serial 0/0 interface has the clock rate command by default. When i 'm trying to remove this command by:
#no clock rate
i got the following error:
FECPM PM doesn't support clock rate 0
When i connect a DTE cable, it is the same thing even if i entered encap x25 dte.