I've tryed to integrate a CCME system (3.3 or 4) with Unity 4.0(5), but without success. The ports are registered correctly, but when I call the voicemail number, I receive always a busy tone. No error logs. The TSP version is 8.1(3). CCME is on 1751v with 128/32.
Any advice about a specific troubleshooting will be appreciated
Thanks for your support