I have a cluster of CUCM 7 (Publisher and Subscriber) ,i configured Voice gateway h323 with 8 fxo ports
Internal using 4 digits ,Local .International dialling is enabled.
Users are calling internally to each other by using 4 digits but the problem is that when the user is busy on the phone and if other user is calling to him the bell is ringing but the calling party doesn't know that he is busy with another call.
I want to setup some configuration that if the user is already busy on the line and if anybody alse called to same user he should see that he is busy on the phone OR something same like this.
How i can configure this on CUCM. ?????