Callmanager to PBX - BRI qsig

I want to connect Callmanager (who communicate with Voice gateway-Cisco
2811 over MGCP) to PBX. 2811 is connected with PBX-Ericsson MD110 using
ISDN BRI QSIG. Can anyone tell me how to configure CallManager and 2811
for this case. Are they any way to do this?

prophet