There are three clusters here all connected via non-GK intercluster trunks on CCM 4.2(3)sr2b. Right now, Cluster 3 cannot dial Cluster 1 (busy), but Cluster 1 can dial Cluster 3. The ICT from Cluster 3 to Cluster 2 is working fine both ways. They are using the same MRGL and device pool. I have attached the ccm to this post.
I am trying to find some information about this error, but I have been unsuccessful so far. Does anyone have any ideas?