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Verifying Voice over IP Service
The VoIP Log
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When plugged into a switch VLAN port, the native and
appliance (phone) VLANs are also displayed along with
the CDP information, as shown in Figure 7-2:
ahn320s.bmp
Figure 7-2. VLAN Port Information
The VoIP Log
The VoIP Log is a per-call event log that records major
SCCP/SIP and RTP events and measurements.
To access the log, do the following:
1. From the Main menu, select VoIP/Toolkit.
2. On the VoIP/Toolkit menu, select VoIP Log to
display the VoIP Log screen.
You can use the VoIP Log to watch events that occur as
the phone boots up and subsequently to monitor a call that
is in progress.
During the boot process, the log captures the exchanges
between the phone and the network. When the phone
goes “off hook”, the boot information is cleared and
transactions between the parties are recorded. Call quality
and QoS statistics are logged for both sides.
Figure 7-3 shows an example of a VoIP Log entry.
Depending on the length of a call, the VoIP Log may have
several pages of screens. To page up or down, press the
Up or Down
ab
arrow keys.
ahn321s.bmp
Figure 7-3. VoIP Log
Appendix C contains sample SCCP and SIP boot and call
logs. The logs are fully commented to give you idea of
what happens during the boot process and while a call is
in progress. You can also look at the parameters that are
tracked from the start of a call until the far-end phone goes
“on hook”.