Sorry, forgot to add the channel-group
number into the name of the serial
interfaces:
!
! Router A - slot 0 port 0
!
controller E1 0/0
channel-group 0 unframed
interface Serial0/0:0
ip address 10.0.0.1 255.255.255.252
!
! Router B - slot 0 port 0
!
controller E1 0/0
channel-group 0 unframed
interface Serial0/0:0
ip address 10.0.0.2 255.255.255.252
Look here for details:
Configuring 1- and 2-Port T1/E1 Multiflex
Voice/WAN Interface Cards on Cisco
2600 and 3600 Series Routers
http://tinyurl.com/cc9hj