I have implemented CUCM 6.1 with MGCP gateway...just need to clear one thing that is somebody told me that Call ID is not supported with MGCP gateway but it works fine with H.323 gateway...currently i am not able to see calling party number on my ip phone screen although it is activated from our Telco even i have checked it physically with an analog phone...need your assistance in this regard...
My question is, does CM supports caller ID with MGCP gateway or not..??
Correct. You need CUCM 8.x and 12.4(20)T to get caller ID from MGCP from FXO ports.
8.x isn't out yet which means you're waiting for 8 for this feature. But 20T plus CUCM 8.x and you should be fine.