Async backup when T1 goes down

[easternsky1]

I need to setup our 1751 router to use the internal async card as a backup if the main frame relay T1 line fails. I have tried Dialer watch and I continue to "miss something". Anyhelp would be greatly appreciated.

Current config on 1751:

!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname CR-RT001
!
boot system flash c1700-y-mz-122-8.T5.bin
logging queue-limit 100
enable password <deleted>
!
username <deleted> password <deleted>
memory-size iomem 25
ip subnet-zero
!
!
! dhcp for local subnet
!
no ip domain lookup
no ip dhcp conflict logging
ip dhcp excluded-address 192.168.22.1 192.168.22.199
!
ip dhcp pool crossville
network 192.168.22.0 255.255.255.0
domain-name royal-oak
dns-server 12.127.16.68
default-router 192.168.22.1
!
!Local network interface
!
interface FastEthernet0/0
description connected to EthernetLAN_3
ip address 192.168.22.1 255.255.255.0
ip broadcast-address 192.168.22.0
speed auto
!
interface Serial0/0
no ip address
encapsulation frame-relay
service-module t1 timeslots 1-2
frame-relay lmi-type ansi
!
! Frame-relay back to Atlanta network router 192.168.1.21
!
interface Serial0/0.1 point-to-point
description connected to AT-RT001
ip unnumbered FastEthernet0/0
ip broadcast-address 0.0.0.0
backup delay 30 30
backup interface Async2
frame-relay interface-dlci 100
!
interface Async2
ip unnumbered FastEthernet0/0
dialer in-band
dialer string 18889473210
dialer-group 1
!
router rip
version 2
network 192.168.22.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.1.21
no ip http server
!
!
dialer-list 1 protocol ip permit
!
line con 0
exec-timeout 0 0
password 7 06041D285D5B0C0D16
login
line 2
flush-at-activation
modem InOut
transport input all
autoselect ppp
stopbits 1
speed 115200
flowcontrol hardware
line aux 0
modem InOut
transport input all
autoselect ppp
flowcontrol hardware
line vty 0 4
password 7 06041D285D5B0C0D16
login
!
scheduler allocate 4000 1000
end