Call Blocking Configuration Examples
If your Gateways are MGCP, added with the release of CUCM 8.x
From Dan @ Cisco for MGCP
"What you don't have you don't need it now"
A- based on your Call manager
1- You have to ceate partiton for eample (CL-PSTN-SCREE-PT).
2-You have to ceate CSS twhich will include the above partition which is called (
CL_Tenant-Control_CSS).This CSS is assigned to patterns in CL_PSTN-Screen_PT and it contains partitions that have phone DNs and other patterns that route to devices or applications on the CUCM cluster.
you can repeat the same steps for 866
B-On H323 gateway
Please rate if this will help