We have just published three separate support alerts having to do with DAHDI version 2.3:
DAHDI Fails to Configure ISDN BRI d-channels
Astribank Spans Fail to Register
Astribank Firmware Loading Issue with DAHDI 2.3
If you have been experiencing any compatibility issues between Xorcom products and Elastix 2.0 (or DAHDI 2.3) please check these alerts for possible workarounds.