asterisk users - Feb 2006 - TDM Cross-connection

Hi all,
  I hope you can help me.
  I have connected a E1 controller to a PBX, the E1 is only using timeslots 1-4.
What I want to do is to pass those timeslots over a HDLC (Clear-Channel) link to
a remote location.
  Of course, at the remote location I want to do exactly the same...., receive
those timeslots and pass them to the PBX.

  The scenario is exactly the following:

  PBX --E1-- RTR 2600 -------- HDLC LINK --------- RTR 1751 ---E1--- PBX  

 I tried using the connect command but it only appears to work between
controller, not interfaces.

Thanks!, 

Alejandro,