Establishing A Call - 3Com PathBuilder S200 Series Manual

Establishing a Call

Introduction
This section describes call establishments. Figure 4 shows the packets exchanged for
session and connection establishment and finally, voice transfer.
Session Setup
Connection Setup
Data Transfer
Figure 4. Session and Connection Establishment
Voice Over IP
T0008-48/B
Voice Port Source IP Node
ACP call request
Open UDP channel
ACP call accept
Voice
About Voice over IP (VoIP)
Destination IP Node
TCP call request
TCP Call accept
SoTCP internal call request
SoTCP internal call accept
Voice
Voice Port
ACP call request
ACP call accept
Voice
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Revision 5.2