User Manual
U-SYS IAD108 Integrated Access Device
Chapter 8 Troubleshooting
8-7
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8.1.3 Capturing Network Packets
To locate faults in a Voice over IP (VoIP) device by capturing
packets, we recommend Sniffer pro 3.0.
All IAD108 signaling and voice data are borne on the user
datagram protocol (UDP). The protocol stack architecture is as shown
in Table 8-3. The key protocols are RTP and MGCP.
Table 8-3
The UDP stack
Telnet remote maintenance
Voice
Call control
Telnet RTP
RTCP
MGCP
TCP UDP
IP
MAC
8.1.4 Tracing Signaling
In diagnose mode, use the following command to enable the
signaling tracing switch, and then locate the fault through signaling
tracing.
trace
{
phyport
phyport
|
status
tracestatus | protocoltype
tracerange
phone
phonenumber
|
port
portno
|
terminal
terminalid
command
commandname1 commandname2 commandname3
commandname4 commandname5
}
The meanings of the parameters are listed in Table 8-4.