Crossed call - B part disconnected, A Part connected with another C part

Transport Networks
1

Hi dear Experts.
We got several strange complaints from our customers, where the call is crossed in the middle.
During the call, the B part is disconnected and A Part is connected with another C part.
Any solution please?

2

Check in CS core

3

is it for particular location or call or for all calls when he is trying for that b user.

4

Check commutation on MSC or BSC, we have the same problem because of wrong channels crossing.

5

Yes not over all problems or all call, jast in particular area and some times happen