User's Manual

102 Appendix A: Basic call flows
NN10029-111 Standard MCP 1.1 FP1 (02.02) April 2003 Copyright © 2003, Nortel Networks
Nortel Networks Confidential
4. Client A sends an ACK message to the SIP Application module,
which sends the ACK on to Client B.
Note: The terminating client starts sending packets. The
connection is established.
5. Client B sends Bye to end the call.
6. Client A responds with a 200 OK.
Call transfer
Figure 3, “Call transfer to client diagram,”and Figure 4, “Call transfer
(blind) to client call flow,” show the basic call flow for a call transfer. A
detailed, step-by-step illustration follows these diagrams.
Figure 3 Call transfer to client diagram
Client A
S
I
P
S
I
P
Client B
Client C
Bearer path
Signaling path
S
I
P