PTP with adtran router

Hi,
    I'm trying to create a IPsec link with two fortinet routers, one at each end of my PTP T1.  The t1 goes into an adtran router.  I have never worked with a ptp T1.  I can create an IPsec link between the two fortinet devices with a crossover cable but it wont work over the T1.  I'm assuming there is a problem with the adtran router config.  Here is the running config, any help would be appriciated.

Thanks,
Sean  

myhostname#show configuration
Using 886 bytes

!
!
hostname "myhostname"
enable password mypass
!
ip subnet-zero
ip classless
ip routing
!
event-history on
no logging forwarding
logging forwarding priority-level info
no logging email
logging email priority-level info
!
username "admin" password "mypass"
!
ip policy-timeout tcp telnet 14400
!
!
!
!
!
!
!
!
!
!
interface eth 0/1
  ip address  192.168.4.1  255.255.255.0
  no shutdown
!
!
!
interface t1 1/1
  tdm-group 1 timeslots 1-24 speed 64
  no shutdown
!
interface hdlc 1
  ip address  192.168.0.2  255.255.255.252
  no shutdown
  cross-connect 1 t1 1/1 1 hdlc 1
!
!
!
!
!
ip route 0.0.0.0 0.0.0.0 hdlc 1
!
no ip tftp server
ip http server
no ip http secure-server
no ip snmp agent
no ip ftp agent
!
!
!
!
!
!
!
line con 0
  login
  password qwst2cpe
!
line telnet 0 4
  login
  password qwst2cpe
!
end


PS --  Do I need to use a specific IP/mask on the wan port of the fortinet in order for it to talk to the adtran?