Example 9 describes calls between two non-SIP Communication Managers administered as either feature servers or evolution servers.

Call between two non-SIP Communication Managers shows the signaling flow associated with a call between two non-SIP Communication Manager.

Session Manager resources associated with the call depicted in Figure : 1 include:

• 1 non-IMS - non-IMS SIP session

  • Communication Manager - Session Manager - Communication Manager

Communication Manager resources associated with the call depicted in Figure : 1 include:

• 2 SIP trunk channels

• 2 non-SIP trunk channels

• CPU for 2 SIP trunk call legs and for 2 non-SIP trunk call legs