I am having troubles here configuring plain point to point T1. The serial interface is keep going up and down.
I tried to put a hardware loop and it showed serial int as up/down.
I tried to put a software loopback diag on controller t1 and serial int showes as up/down. When I replaced hardware loop with T1 cable it biefly showed eigrp neighbor on this int and then it went down again.
here is my config
controller T1 3/0
clock source internal
cablelength short 110
channel-group 0 timeslots 1-24 speed 64
description MG Platte City 82.DHDA.051431
ip address x.x.x.x x.x.x.x
no ip proxy-arp