An SCCP IP phone places a call to a SIP phone that is registered to the same Cisco Unified Communications Manager Express. During the active call,call waiting indicates a second call is incoming to the handset, but the user decides to ignore it. In this scenario, what is the combined total number of signaling conversations and media flows that used the SCCP phone as an endpoint?
A. 2
B. 3
C. 4
D. 5
E. 6
