Quote
<font face="Verdana, Arial" size="2">Originally posted by DrPbx:
Check out the hardware manual , it shows dip switches that apply to timing. There aren't any programming settings that I am aware of related to timing.</font>

Ok, I found it...

It's memory block 1-8-33:

8.3.11 Master Clock Selection (Memory Block 1-8-33)

Use this Memory Block to assign the source for synchronization of the clocking for DTI-U10/20/30, PRT(1)-U10/20, or BRT(4)-U10 ETU.

Default: 0 (Not assigned)

Related Programming:

Memory Block 7-1: Card Interface Slot Assignment

Once you've got the proper configuration setup modem connections via CoSession should work flawlessly!