I am trying to understand SCCP and how it is working with Voice gateway and CCM.
I have 1xVG (in gns3), SCCP phone (IP blue software phone) and Cisco call manager (vmware machine).
My questions are:
1. Can SCCP phone directly communicate with CCM if they are not on the same network?
2. Do I need Voice gateway if I want to communicate just between two SCCP IP phones?
3. Can my Voice gateway see the communication between SCCP IP phone and CCM (for example register message...and so on).
Thank you for your answers in advance.